Showing posts sorted by relevance for query SI. Sort by date Show all posts
Showing posts sorted by relevance for query SI. Sort by date Show all posts

Friday, May 05, 2023

SMART researchers create world’s smallest LED and holographic microscope that enable conversion of existing mobile phone cameras into high-resolution microscopes

This is the world’s smallest silicon (Si) light-emitting diode (LED) - smaller than the wavelength of light - with a light intensity comparable to much larger, state-of-the-art Si LEDs and with multiple potential applications 

Peer-Reviewed Publication

SINGAPORE-MIT ALLIANCE FOR RESEARCH AND TECHNOLOGY (SMART)

Press-release-image-1 

IMAGE: (A) PHOTOGRAPH OF A FULLY FABRICATED 300 MM WAFER. (B) CLOSE-UP OF A CHIP DIE. (C) INFRARED MICROGRAPH WITH THE LED TURNED ON. (D) HOLOGRAPHIC MICROSCOPE SETUP. (E) CLOSE-UP OF A RECONSTRUCTED HOLOGRAPHIC IMAGE COMPARED WITH THE (F) GROUND TRUTH. view more 

CREDIT: PHOTO CREDIT: SINGAPORE-MIT ALLIANCE FOR RESEARCH AND TECHNOLOGY (SMART)

  • This is the world’s smallest silicon (Si) light-emitting diode (LED) - smaller than the wavelength of light - with a light intensity comparable to much larger, state-of-the-art Si LEDs and with multiple potential applications
  • This LED was used to build the world’s smallest holographic microscope and is a proof of concept that enables the cameras in existing devices (such as mobile phones) to be converted into high-resolution microscopes by only modifying the silicon chip and software
  • Complementing this is a new neural networking algorithm developed by SMART that is able to reconstruct objects measured by this microscope, including plant seeds and tissue samples - allowing for enhanced microscopic examination of a wide range of objects that was not previously possible as well as the detection of plant disease and aberrant plant tissue

Singapore, 4 May 2023 - Researchers from the Disruptive & Sustainable Technologies for Agricultural Precision (DiSTAP) and the Critical Analytics for Manufacturing Personalized-Medicine (CAMP) Interdisciplinary Research Groups (IRG) of Singapore-MIT Alliance for Research and Technology (SMART), MIT’s research enterprise in Singapore have developed the world’s smallest LED (light emitting diode) that enables the conversion of existing mobile phone cameras into high-resolution microscopes. Smaller than the wavelength of light, the new LED was used to build the world’s smallest holographic microscope, paving the way for existing cameras in everyday devices such as mobile phones to be converted into microscopes via only modifications to the silicon chip and software. This technology also represents a significant step forward in the miniaturisation of diagnostics for indoor farmers and sustainable agriculture.

This breakthrough was supplemented by the researchers’ development of a revolutionary neural networking algorithm that is able to reconstruct objects measured by the holographic microscope, thus enabling enhanced examination of microscopic objects such as cells and bacteria without the need for bulky conventional microscopes or additional optics. The research also paves the way for a major advancement in photonics - the building of a powerful on-chip emitter that is smaller than a micrometre, which has long been a challenge in the field.

The light in most photonic chips originates from off-chip sources, which leads to low overall energy efficiency and fundamentally limits the scalability of these chips. To address this issue, researchers have developed on-chip emitters using various materials such as rare-earth-doped glass, Ge-on-Si, and heterogeneously integrated III–V materials. While emitters based on these materials have shown promising device performance, integrating their fabrication processes into standard complementary metal-oxide-semiconductor (CMOS) platforms remains challenging. While silicon (Si) has shown potential as a candidate material for nanoscale and individually controllable emitters, Si emitters suffer from low quantum efficiency because of the indirect bandgap, and this fundamental disadvantage combined with the limitations set by the available materials and fabrication tools has hindered the realisation of a small native Si emitter in CMOS.

In a recently published Nature Communications paper titled, “A sub-wavelength Si LED integrated in a CMOS platform”, SMART researchers described their development of the smallest reported Si emitter with a light intensity comparable to that of state-of-the-art Si emitters with much larger emission areas. In a related breakthrough, SMART researchers also unveiled their construction of a novel, untrained deep neural network architecture capable of reconstructing images from a holographic microscope in a paper titled, “Simultaneous spectral recovery and CMOS micro-LED holography with an untrained deep neural network” recently published in the journal Optica.

The novel LED developed by SMART researchers is a CMOS-integrated sub-wavelength scale LED at room temperature exhibiting high spatial intensity (102 ± 48 mW/cm2) and possessing the smallest emission area (0.09 ± 0.04 μm2) among all known Si emitters in scientific literature. In order to demonstrate a potential practical application, the researchers then integrated this LED into an in-line, centimetre-scale, all-silicon holographic microscope requiring no lens or pinhole, integral to a field known as lensless holography. 

A commonly faced obstacle in lensless holography is computational reconstruction of the imaged object. Traditional reconstruction methods require detailed knowledge of the experimental setup for accurate reconstruction and are sensitive to difficult-to-control variables such as optical aberrations, the presence of noise, and the twin image problem.

The research team also developed a deep neural network architecture to improve the quality of image reconstruction. This novel, untrained deep neural network incorporates total variation regularisation for increased contrast and takes into account the wide spectral bandwidth of the source. Unlike traditional methods of computational reconstruction that require training data, this neural network eliminates the need for training by embedding a physics model within the algorithm. In addition to holographic image reconstruction, the neutral network also offers blind source spectrum recovery from a single diffracted intensity pattern, which marks a groundbreaking departure from all previous supervised learning techniques. 

The untrained neural network demonstrated in this study allows researchers to use novel light sources without prior knowledge of the source spectrum or beam profile, such as the novel and smallest known Si LED described above, fabricated via a fully commercial, unmodified bulk CMOS microelectronics.

The researchers envision that this synergetic combination of CMOS micro-LEDs and the neural network can be used in other computational imaging applications, such as a compact microscope for live-cell tracking or spectroscopic imaging of biological tissues such as living plants. This work also demonstrates the feasibility of next-generation on-chip imaging systems. Already, in-line holography microscopes have been employed for a variety of applications, including particle tracking, environmental monitoring, biological sample imaging, and metrology. Further applications include arraying these LEDs in CMOS to generate programmable coherent illumination for more complex systems in the future.

Iksung Kang, lead author of the Optica paper and Research Assistant at MIT at the time of this research, said, “Our breakthrough represents a proof of concept that could be hugely impactful for numerous applications requiring the use of micro-LEDs. For instance, this LED could be combined into an array for higher levels of illumination needed for larger-scale applications. In addition, due to the low cost and scalability of microelectronics CMOS processes, this can be done without increasing the system’s complexity, cost, or form factor. This enables us to convert, with relative ease, a mobile phone camera into a holographic microscope of this type. Furthermore, control electronics and even the imager could be integrated into the same chip by exploiting the available electronics in the process, thus creating an ‘all-in-one’ micro-LED that could be transformative for the field.”

“On top of its immense potential in lensless holography, our new LED has a wide range of other possible applications. Because its wavelength is within the minimum absorption window of biological tissues, together with its high intensity and nanoscale emission area, our LED could be ideal for bio-imaging and bio-sensing applications, including near-field microscopy and implantable CMOS devices,” added Rajeev Ram, Principal Investigator at SMART CAMP and DiSTAP, Professor of Electrical Engineering at MIT and co-author of both papers. “Also, it is possible to integrate this LED with on-chip photodetectors, and it could then find further applications in on-chip communication, NIR proximity sensing, and on-wafer testing of photonics.”

This research was carried out by SMART and supported by the National Research Foundation (NRF) Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. 

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Tuesday, September 19, 2023

Thailand hunts for missing ancient site treasures

Montira RUNGJIRAJITTRANON, Alexis HONTANG
Mon, September 18, 2023 

Thailand has a rich collection of historical sites, but, like in other countries in the region, foreign looting has decimated many of them 
(MANAN VATSYAYANA)

Under the scorching sun, Thai archaeologist Tanachaya Tiandee clambers through ruined pagodas in the ancient town of Si Thep, trying to unlock their mysteries -- a task made harder because many of the clues are missing.

Looters stripped Thailand's rich historical sites such as Si Thep over decades, taking many items abroad. The kingdom is now trying to repatriate those stolen cultural treasures.

"The big picture like the building was discovered, but the artefacts which tell little details are missing, making a lot of stories untold about Si Thep," Tanachaya told AFP.

"It's like a piece of puzzle was missing."

Si Thep, which archaeologists date back to between 1,500 to 1,700 years ago, may be inscribed in UNESCO's cultural world heritage list this week -- Thailand's first addition since 1992.

Over several centuries and under the influence of various cultures, it grew into a vital trading metropolis until its decline began in the late 13th century, according to the Thai government's submission to UNESCO.

As 33-year-old Tanachaya carefully excavates the ancient stone constructions, she faces a difficult task piecing together the stories of Si Thep, which lies around 200 kilometres (120 miles) north of Bangkok.

It is believed that over the years, at least 20 objects have been stolen from the site, with experts identifying 11 in museums in the United States.

The real number of looted objects is suspected to be far higher, thanks to a lack of documentation.

Now Tanachaya -- who decided when she was young that she wanted to become a Thai version of movie character Indiana Jones -- and her colleagues face their own quest.

Can they bring their culture's treasures home?

- 'Won't accelerate' -

Thailand's government, led at the time by the military, established the Committee to Monitor Thai Antiquities Abroad in 2017.

About 340 objects have been voluntarily repatriated to Thailand since then, according to the latest report by the committee.

But the process is slow, partly because government officials are wary of jeopardising diplomatic relations with important allies like the United States.

Instead, Thai authorities have pursued a "discreet" diplomatic route, explained the director-general of Thailand's Department of Fine Arts Phnombootra Chandrachoti.

"We won't accelerate anything," he told AFP.

The Norton Simon Museum, located in the US state of California, holds nine Thai artefacts, according to a recent statement from the committee -- including one item an independent expert says is from Si Thep park.

The items were among 32 scattered in museums across the United States, the committee said.

The Norton Simon is only one of a number of US institutions -- including New York's Metropolitan and San Francisco's Asian Art Museum -- that have been named in the growing scandal around art that investigators claim was illegally removed from its country of origin.

The museum told AFP it had not heard from the Thai government, but would cooperate with authorities if contacted, and defended holding the items.

The works, which it claimed were legally purchased, "have been carefully preserved and displayed" said Leslie Denk, vice-president of external affairs at the institution.

- Dilemma over tourism -

Thai historians face another dilemma: Si Thep's bid to become a UNESCO site could boost the local economy -- but it could also put the fragile ancient site under strain.

Presently, only one percent of visitors to Phetchabun -- the province that is home to Si Thep -- are foreigners, according to official 2019 data.

The Thai government hopes UNESCO designation will help boost the kingdom's tourism sector, which accounts for almost 20 percent of the country's GDP.

There are, however, concerns about conservation.

The site is already "almost reaching its fullest capacity" of around 2,000 tourists a day, said Si Thep Historical Park head Sittichai Pooddee.

"We will try to balance things. We will try to not over-promote," he said.

Missing items mean gaps in the record, which makes it harder to satisfy the curiosity of tourists visiting the site, said Thai historian Tanongsak Hanwong.

"Artefacts dignify Thailand's past civilisation, and when some of the parts are missing, we get stuck and we can't tell important pieces of the story to the world," Tanongsak said.

At Si Thep's peaceful complex, domestic visitors gaze at a carefully carved pagoda wall.

"It's the heritage that belongs to Thai people, and that we are proud of. It would be a pity not to get it back," said Chaowarat Munprom, a 66-year-old retiree.

"It once belonged here."

Saturday, March 16, 2024

 

Zircons reveal the history of fluctuations in oxidation state of crustal magmatism and supercontinent cycle


SCIENCE CHINA PRESS
Zircons reveal the history of fluctuations in oxidation state of crustal magmatism and supercontinent cycle 

IMAGE: 

ZIRCONS, A MINERAL NEARLY AS OLD AS EARTH ITSELF, IS A TIME KEEPER, AND ALSO PROVIDES A CHEMICAL WINDOW INTO MANY GEOLOGICAL PHENOMENA, SUCH AS OXIDATION STATE. BY DETERMINING THE OXIDATION LEVELS OF THE MAGMAS THAT FORMED THESE DETRITAL ZIRCONS, SCIENTISTS ARE ABLE TO DEDUCE THE ONSET OF CRUST TO MANTLE RECYCLING, WEATHERING, AND THE SUPERCONTINENT CYCLE.

view more 

CREDIT: ©SCIENCE CHINA PRESS




This study is led by Dr. Rui Wang and his PhD student Shao-chen Wu (Institute of Earth Sciences, China University of Geosciences, Beijing), Dr. Roberto Weinberg and Dr. Peter Cawood (Monash University), and Dr. William Collins (Curtin University).

Zircons, a mineral nearly as old as Earth itself, crystalize when magmas (molten rocks) cool and can be found in trace quantities in magmatic rocks. The formation of magmas constitutes the mountains in the Earth. Through interactions with water and atmosphere, the mountains break down into sediments. Zircons are so durable and resistant to weathering and erosion that they rarely go away, and therefore this mineral in sediments (so call “detrital zircons”) holds the greatest insight into the history of the Earth. Zircon enriches with U (U-Pb dating) is a time keeper, and also provides a chemical window into many geological phenomena, such as oxidation state.

The team uses a new method of Loucks et al (2020) for determining the oxidation state of granitic magmas that uses ratios of Ce, U, and Ti in zircon to track oxidation state change of crustal magmas through Earth history. The calculation does not require ionic charge to be known, nor is determination of crystallization temperature, pressure, or parental melt composition required.

“Previous methods include Ce/Ce* and Eu/Eu* oxybarometers, but each has limitations related to temperature, pressure, host rock chemical compositional variations, or precision of REE elements needed to measure the Ce/Ce* and Eu/Eu* anomalies.” Bob Loucks from Western Australia says.  

This improved oxybarometer allows a more confident evaluation of the variation in oxidation state, which can now be interpreted in terms of global tectonic changes with time. By determining the oxidation levels of the magmas that formed these detrital zircons, scientists are able to deduce the onset of crust to mantle recycling, weathering, and the supercontinent cycle.

The key point is that rocks that lay at the Earth's surface can be carried back down to deep in the Earth's mantle (hundreds to thousands of km below the surface. Our data shows that not only has this happening today but could have been going on for billions of years. Looking at zircons from the early Earth, 3-billion-year-old zircons, to those formed today we have found that the redox state of the magmas in which they formed. The oxidation state (expressed as ΔFMQ) of the detrital zircons rise at ~3.5 billion years followed by a consistent average ΔFMQ > 0 over the last 3 billion years, suggesting recycling of oceanic lithosphere back into the mantle in what eventually became established as subduction zones. It shows that the lower limit of redox state dropped dramatically at 2.6 billion years ago, marking the formation of well-defined continents and the burial of oceanic rocks back into the deep mantle of the Earth. Further to that we found a cyclicity of the redox patterns: every 600 million years or so, continents come together to form supercontinents, like Gondwana, Rodinia, Nura, and Superia.

Zircon age histogram and redox variations with the supercontinent amalgamation intervals. 

Formation of a new subduction zone with hot or cold incipient channel



SCIENCE CHINA PRESS

Formation of a new subduction zone with hot or cold incipient channel 

IMAGE: 

COMPARISONS OF DEFINITIONS, FAVORABLE CONDITIONS AND NATURAL CASES BETWEEN HOT AND COLD SUBDUCTION INITIATION

view more 

CREDIT: ©SCIENCE CHINA PRESS





This study is led by Prof. Zhong-Hai Li (University of Chinese Academy of Sciences). The present solid Earth is actually active, with new plates generating in the mid-ocean ridges and some old plates sinking back into the interior through subduction zones. Subduction is thus a key process of the tectonics and geodynamics of the Earth. However, the formation mechanism of a new subduction zone, i.e. subduction initiation (SI), is widely debated. “Comparing to the long-term mature subduction, its initiation is more like an “instantaneous” process with limited geological records. Furthermore, these records experience erosion and modification by the later subduction. Consequently, the remnant geological records are rare, which plays as a major barrier for the better understanding of subduction initiation process.” Li says.

Geologists tried to decipher the SI process through analyzing the characteristic rock records. The most widely studied, characteristic magmatic record is the forearc rock sequence (forearc basalt – boninite – arc tholeiites) in the Izu-Bonin-Mariana (IBM) subduction zone. In addition, the SSZ-type (Supra-Subduction-Zone) ophiolites, e.g. in the Troodos (Cyprus) and Semail (Oman), have comparable petrological and geochemical characteristics with the IBM forearc sequence. Thus, it is further proposed that the SSZ-ophiolite could be generated during subduction initiation. Another type of geological record for SI is the metamorphic sole, which normally emplaces accompanying with the SSZ-ophiolite. All these magmatic and metamorphic records point to a high temperature and low pressure condition for SI. Then, “the question is whether the occurrence of all the subduction initiation in nature requires such a critical condition with rather high temperature at shallow depths.” Li says.

In the present-day ocean, there are several early-stage subduction zones with differential geological records, for example, the Puysegur subduction zone to the south of New Zealand. This SI process lacks the typical magmatic and metamorphic records. Instead, the geological records include the responses of structural deformation and sedimentary evolution. Similarly, there are a series of young oceanic subduction zones in the western Pacific, e.g. the Negro subduction zone in the Sulu Sea, the north Sulawesi and Cotabato subduction zones in the Celebes Sea. The thermal conditions in these incipient subduction channels should be colder, at least lower than the required temperature for the generation of ophiolite and metamorphic sole.

“It thus indicates that the extremely high temperature condition at shallow depths, for the generation of naturally observed ophiolite and metamorphic sole, only represents the high temperature end-member of subduction initiation, but cannot be used as the diagnostics for all the SI.” Li says and he further proposes two contrasting regimes for subduction initiation, i.e. the hot versus cold end-members, as shown in Figure 1. The hot SI regime is more “traditional”, with the geological records of magmatic and metamorphic rocks which have been regarded as the typical responses of SI and even as the diagnostics for deciphering paleo-SI cases in the orogens. In contrast, the cold SI regime lacks such kind of magmatic and metamorphic records, and thus attracts less attention in observational studies, but does occur for many subduction zones.

“Consequently, the SSZ-ophiolite and metamorphic sole are only the typical records of hot SI, but are not necessarily generated in the cold SI regime. Thus, we cannot use such specific rock records to judge the occurrence of SI or not; instead, multiple geological responses should be combined together to get a full view of this puzzling issue.” Li says.

 

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See the article:

Hot versus cold subduction initiation

https://doi.org/10.1093/nsr/nwae012

Sunday, June 04, 2023

Chinese researchers find way to manufacture highly flexible, paper-thin solar cells

By Global Times
Published: May 25, 2023 

Chinese researchers have developed a special technology to tailor the edges of textured crystalline silicon (c-Si) solar cells, based on which the solar cells can be bent and folded like thin paper, allowing for broader application and use.

The breakthrough was achieved by Chinese researchers at the Shanghai Institute of Microsystem and Information Technology (SIMIT) under the Chinese Academy of Sciences. The results have been featured on the cover of the May 24 edition of Nature journal.

The c-Si solar cells fabricated with the new technology can be 60 millimeters thin with a bending radius of about 8 millimeters.



Highly flexible, paper-thin c-Si solar cells Photo: Courtesy of the CAS


According to the Technology Daily, c-Si solar cells are type of solar cell seeing fast development at the moment. They have advantages including long service life and high conversion efficiency, making them a leading product in the photovoltaic market.

Such c-Si solar cells have a market share of more than 95 percent, according to Di Zengfeng, deputy head of the SIMIT, who is one of the authors of the research paper.

Although c-Si solar cells were developed nearly 70 years ago, their use is still limited, the paper explained. Currently, the c-Si solar cells are mainly used in distributed photovoltaic power stations and ground photovoltaic power stations. Hopefully, such solar cells can be used in construction, backpacks, tents, automobiles, sailing boats and even planes.

They can also be used to generate clean energy for houses and a variety of portable electronic and communication devices as well as for transportation, according to the researchers.



Highly flexible, paper-thin c-Si solar cells Photo: Courtesy of the CAS

Liu Zhengxin, a research fellow with the SIMIT, and another author of the paper, said that the study verified the feasibility of mass production, providing a technical route for the development of lightweight and flexible c-Si solar cells.

At the same time, the large-area flexible photovoltaic modules developed by the research team have been successfully applied in the fields of near-space vehicles, building photovoltaic integration and vehicle-mounted photovoltaic systems, Liu said.

Sunday, May 31, 2020


If you know a little about the Situationist International (SI) it’s obvious why, of all manifestations of the cultural avant-garde, this one holds a special fascination for young architects and urban planners. When you learn a little more — and this is neither forbidden nor encouraged – it is equally clear why few if any established practitioners show interest in the movement, or could be taken seriously if they did.

Today, Situationist ideas are popular, and certain key terms of the SI critique are so apt to current realities, they strike many as self-evident. To the young, urban, wired and socially astute of today, terms like “dérive”, “psychogeography”, “separation”, “spectacle” and “détournement” not only ring familiar on first hearing, but they (or close equivalents) are in many cases already in active everyday use. Artists, cultural activists, architects, urbanists, art historians, critical theorists, sociologists, media designers, experimental film makers, advertisers, PR agents[1] and military strategists[2] all have reason to know parts of the situationist project. And the “art” parts of that project in particular have recently enjoyed the cachet of a serious radical chic in art and design spheres. How could they fail to? The story of the SI presents us the picture of a hip, smart, truly bohemian avant-garde in still recent times, culturally closer and easier to identify with for many than what happened in Zurich or Berlin or Paris in the 1910’s and 20’s. And thanks to increasing up-take of the situationist “thing” among academic theorists and art historians, the movement behind this chic has now also been institutionally legitimated, and authorized as a “real” avant-garde. So, if you liked Dada and Surrealism, you’ll love the SI.
The cultural “arrival” of the SI is not in question. But what is noticeable about this popularity are its limits, and how similarly so many sectors of the cultural mind draw these limits in their framing of the SI phenomenon. What most reliably falls outside this framing, of course, is the true scale and seriousness of the situationists’ radical commitment.
From the beginning,” writes Debord in 1971, near the end of the situationist project, “the situationist project was a revolutionary program”[3].
Now, you can call a given cultural phenomenon “revolutionary”, or “radical”, and keep doing so for a long time without ever having to either affirm or to repudiate what those words really must mean when applied to some of the most interesting cases. The ambiloquence of how the label “avant-garde” gets applied in arts discourse centers precisely on the difference between referring to a formal or conceptual radicality, revolutionary in artworld and artmarket terms exclusively, and referring to a concrete, social-political radicality, the revolutionary human commitment to transforming everyday life by altering the conditions that determine how it is organized. When considering the SI, it is artificial to try separating a cultural-intellectual radicality off from the social-political radicality. A biasing of the former over the latter is out of balance, and ignores the project’s defining trajectory and the manifest consistency and coherence of its guiding principles.
If you like the Situationist International, in other words, you like a group of cultural actors who were certain of “the impossibility of the continuation of the functioning of capitalism”[4]. Who were dedicated to provoking a crisis in society through sustained attack on the false “idea of happiness”[5] that keeps people participating in the losing game of capital. Who were organized, literally and tactically, to assist where possible in fomenting real revolution, and worked hard to push the situation that presented itself in May ’68 over the edge into a permanent revolution in which
autonomous collective action would triumph over hierarchical domination and passive compliance in every sector of governance, industry and society.
WHAT CAN THE REVOLUTIONARY MOVEMENT DO NOW?
EVERYTHING
WHAT BECOMES OF IT IN THE HANDS OF THE PARTIES AND UNIONS?
NOTHING
WHAT DOES IT WANT? REALIZATION OF THE CLASSLESS SOCIETY THROUGH THE POWER OF THE WORKERS’ COUNCILS
council for the maintenance of the occupations[6]
Launch Trajectory of the Situationist Project
The situationists emerged out of a small but potent ferment of avant-gardist activity in post-WWII Paris. In fact the SI was the third stage in a noisy scramble to reestablish the project of radical avant-gardism after the decline of Surrealism, whose practices the horror of international fascism and industrial genocide had rendered ridiculous and irrelevant. The first stage of this scramble was the founding of Lettrism, by a Romanian Jewish immigrant, Isidore Isou, who arrived in Paris in 1945, at what must have seemed an impossibly inappropriate time for babbling nonsense poetry in the cafés to shock the bourgeoisie. But the goal Isou had set was a serious one, and as Lettrism took root it became clear that radical critique and condemnation of contemporary society was no less relevant after the war than it had been before it, especially in view of the survival of the underlying political economy that had made the war possible in the first place. In particular Lettrism aimed to get back to a purer strand of avant-gardist negativity represented by Dada, before the critical force of that negativity was diluted in the magical thinking and obscurantism of later Surrealism.
Focusing on sound poetry, collage and experimental film-making, the Lettrists took aim at the values of bourgeois society using the media and imagery of pop culture and channeling the energy of youth rebellion. By the early 1950’s Lettrism had attracted a number of young poets and artists who understood the challenge of resuming Dada-styled radicalism in the unlikely context of a rising peace-time prosperity. A number of them, Serge Berna, Gil Wolman and Guy Debord included, took this challenge seriously enough to begin applying the Dada critique to Lettrism itself, ultimately judging it guilty of merely wanting to carve out its own safe niche within the commodity art economy. In 1952 these and other “ultra-Lettrists” broke away to form the “Lettrist International” (LI), re-radicalizing the movement Isou had started and excluding him along with the rest of the backward faction. The LI commenced a sustained period of self-critique, carried out particularly in the mimeographed pages of their newsletter Potlatch[7] and of the Belgian review Les Lèvres Nues[8], where they recommitted themselves to the Dada principle of repudiating artistic practice in favor of direct action within the sphere of everyday life. They reasserted the difference between formal radicalism and social radicalism, and dedicated themselves to searching out a mode of cultural engagement capable of remaining undistracted in its focus on the concrete goal of changing life.
Poetry has exhausted the last of its formal prestige. Beyond aesthetics it resides wholly in the power of men over their own adventures. Poetry is read on people’s faces. So it is urgent to create new faces. Poetry is in the form of cities. So we will construct stunning new ones. The new beauty will be SITUATIONAL, that is provisional and lived. (Potlatch 23; translations mine)
The most elegant games of the intellect mean nothing to us. Political economy, love and urbanism are the means we must control for the resolution of a problem that is first of all ethical.
Nothing can excuse life from being absolutely impassioning.
We know how this is done. (Potlatch 11)
Urbanism and architecture, which had featured more peripherally in the programs of earlier avant-garde movements[9], quickly emerged as a primary focus for the LI. It answered the urgency they felt to eliminate gaps between creative action and everyday life. It realized an intuition implicit in the Dada call to overcome art, namely that as artistic action moved to escape its own limits, it would spread over into every other sector of life as a possible field of recuperative engagement. At the time the ultra-Lettrists were rededicating themselves to engaging the practice of life directly, urbanism was the biggest genre-label they knew for integrating the arts and crafts in a superior constructive activity. At the start, “Unitary Urbanism” had meant precisely urbanism as an all-container for artistic production; “the use of all arts and techniques as means contributing to the composition of a unified milieu” (SI, 22). It was a directive with roots in the arts and crafts movement, in nouveau style and early Bauhaus. A totality of the crafts of ambience and of the furnishing of everyday life[10], a creative, resistant functionalism, an “Imaginist Bauhaus”[11] in Jorn’s hopeful phrase. But this rogue constructivism came blended with a romantic spirit left over from surrealism. Its dream was to claim the city as canvas for a new kind of art and a new kind of life, a new dimensionality of art and life occupying the full environmental surround with the spirit and artifacts of creative exploration and play. In the language of Ivan Chtcheglov’s seminal “Formulary for a New Urbanism”:
Architecture is the simplest means of articulating time and space, of modulating reality, of engendering dreams….Architecture will be a means of modifying present conceptions of time and space. It will be a means of knowledge and a means of action. …experimentation with patterns of behavior with cities specifically established for this purpose….buildings charged with evocative power, symbolic edifices representing desires, forces, events past, present and to come. (SI 2)
Engaging the city as a poetic project came naturally to the founders of the SI, in that it was largely what they were doing already. As chronicled in Debord and Jorn’s lyrical détournement work Mémoires[12], the first years of the LI were a left-bank bohemian romance which those who lived it would never forget. It was the concrete, uncompromising adolescent romance that would anchor a twenty-year run of engaged utopian radicalism. And Paris was both the setting of this romance and the most glamorous co-star. The city mattered because living mattered, and those who would become the Situationists sensed, more minutely than most, how the possibilities of that living were conditioned by the urban surround.
It was not as professionals that they approached these questions, but as jobless delinquents, poets, lovers, cynics and drunks. The dérive, a mode of observational drifting countless artists have by now integrated into their practice[13], and countless planning and urban studies programs[14] into their pedagogies, began as little more than dead time in the stumble of vagrants from bar to bar. And psychogeography, the art-science whose very name seems to promise a permanent human refutation of alienation in the urban field, emerged out of no more experience or authority than the standard dissatisfaction of youth. “We are bored in the city!” reads the first sentence of Chtcheglov’s “Formulary”, and thus of the whole project of a Situationist urbanism. The accomplishment of the SI as a movement was that they never got over that boredom, and they never ceased to hold the organization of urban society responsible.
Their blaming the city for their boredom led to their analysis of separation as a condition imposed by urbanism, and to their understanding of urbanism as a branch of the spectacle mobilized to enforce separation. From the days of their first intentional dérives, they had had this critique of the late-modernist urbanism they saw unfolding around them. As they mapped out the ambience potentials around chance encounters or surprise events, they saw a systematic dismantling of all chances as Paris succumbed to its modernisation a la Corbusier[15]. In the negative space of the most intensely lived years of their lives, they discerned the outlines of a society moving programmatically to eliminate the conditions of that intensity. As the collective authors concluded in their article, “The Skyscrapers by the Roots”, in issue 5 of Potlatch:
So that’s the programme: life cut up forever into closed-off sectors, into surveilled societies; the end of possibilities for insurrection and encounter; automatic resignation. (Potlatch 22)
And it was with this observation that the SI committed itself to urbanism as suitable program for a revolutionary avant-garde.
The Negativity of Situationist UrbanismIf you are researching your possibilities in the field of architecture and urban design, or looking for new, more human ways of engaging the urban field as an artist or architect, situationist writings and practices have a lot to offer. The situationists’ brand of urbanism brings inspiring concepts of play, chance, ambiance, encounter, mobility and freedom to the design of the urban field. Consider some of the “Rational Embellishments to the City of Paris” published in issue 23 of Potlatch (October, 1955)[16]:
By a particular arrangement of fire-escapes and the installation of railings where needed open the roofs of Paris to promenading.
Or,
Equip the street lamps of every street with light switches, letting the public control the lighting.
Or, on the largest scale that this creative planning would assume for the Situationists, Constant’s vast envisioning of a rhizomic network urbanity called New Babylon. Constant was, with Asger Jorn, from the COBRA/Imaginist Bauhaus contingent present at the founding of the SI. The only situationist structure ever built was the highly modular and transformable gypsy camp he designed for a community in Alba, Italy, on the occasion of the SI’s inception (Sadler 37). But the countless drawings, maps and models created to visualize this New Babylon—more idea of life than city, more city than theory of urban form—constitute the most palpable expression of what an urban society (dis-)organized along situationist lines would look like. Of course, it is only one possible version, but Constant’s vision captures a lot. It seeks to host in an infinitely modifiable urban infrastructure, completely superimposed as a new layer over existing cities and terrain, scaffolding for a movable feast of psychogeographical experiences and lifestyles, based on those the situationists were tasting on dérive in various places, and recording in a number of psychogeographical maps and reports they published in their journals.[17] Without Constant’s New Babylon, these maps and reports and a handful of lyrical suggestions would be the only existing proof-of-concept of situationist urbanism. With it, the situationist idea becomes one of the grand utopian city visions of modern times.[18]
An important number of architects and urban planning offices have gravitated to the range of concepts and challenges presented by the situationist project. Sadler makes a good list of them in the conclusion to his famous study, The Situationist City, many considered authoritative:
…the situationist fallout scattered so widely, and so thinly: onto Team 10, onto Ralph Rumney’s “Palace” exhibition at the ICA in 1959; onto Italian radical design; onto the environments and happenings movement; onto Archigram, thence to the Architectural Association in London, and so onto, for example, Richard Rogers, Bernard Tschumi, Nigel Coates, and the NATO Group; and even into the art-historical syllabus itself, through the agency of British situationist-turned-historian T.J.Clark. (Sadler 163)
I could add others such as Lars Spuybroek[19], Chora[20] under Raoul Bunschoten, the An Architektur[21] collective in Berlin, Stephen Read’s Spacelab[22] at Delft, Stalker[23] in Rome and Park Fiction in Hamburg[24]. At the same time, a seemingly constantly regenerated pool of artists, designers and students every year is drawn into some fascination with this group of colorful, anti-establishment hipsters out to change the world. If it is a serious option within the real professional arrangements of a spatial design or planning career, who wouldn’t want to devote themselves to changing the world, using the latest practices and techniques of psychogeography, defined by Debord as “the study of the precise laws and specific effects of the geographical environment, whether consciously organized or not, on the emotions and behavior of individuals” (SI 5)? What self-respecting architect or urbanist would not insist this is what they were doing already?
But much of the steady or fad-like interest we see people taking in the SI’s ideas can only be maintained in polite society in ignorance of the greater bulk of situationist activity and production, which does not manifest in drawings or maps or scale models. For the situationists were nothing if not consistent in their repudiations, and just as surely as they repudiated art as inadequate to the revolution they were after, ceasing to make hypergraphic collage or discrepant film works, they eventually repudiated creative urbanist art and city design for the same reasons. However, this fact has been even less observed by fans and scholars of the movement than the fact of their repudiation of art. This is important to establish, that just as it is relevant for interested artists today to know that situationist thinking would probably have rejected the kind of art they themselves are doing, partly under situationist inspiration, it should be obvious to any interested architects or urbanists that situationist urban theory, especially in its late phase, is antithetical to design activity, where the fundamental conditions of political-economy supporting that activity are not overthrown.
It is important to see that when the situationists (lettrists at the time) took urbanism into their avant-garde practice, they did so on what was for them a trajectory out of poetry and into revolutionary action. You can see this chronicled in the successive issues of their journals, and in the composition of the group from year to year, but it is already conscious from early on. After the SI was founded, as Constant was evolving New Babylon, Debord was focusing on making contacts with other groups and theorists (one example, Socialisme ou Barbarie), broadening the SI analysis and sharpening the edge of its revolutionary theory[25]. At a certain point, as this analysis of current conditions advanced, doing urbanism became seen as in fundamental conflict with the project of changing life, and it was repudiated.
The concepts and practices of Unitary Urbanism had been central for the situationists already from the first years of the Lettrist International. The pages of Potlach from 1954 onward give coherent and eloquent testimony to the birth and establishment of this as an avant-garde program, just as the first five issues of L’Internationale Situationniste document the phase of the situationist project under Constant and characterized by his constructive idealism. Constant’s New Babylon was developed from the gypsy camp of 1956 onward as the constructive dimension of the situationist project. In1958 Constant and Debord established the Bureau of Unitary Urbanism in Amsterdam. This Amsterdam Declaration lays out a program for the Bureau; item 4 establishes urbanism within the project: “The minimum programme of the S.I. is the experimentation with complete decors, which should extend to a unitary urbanism, and research into new behaviors in relation to these decors” (IS #2, IS 63). And in item five we get a statement of how urbanist activity is to be understood: “Unitary urbanism is defined in the complex and permanent activity which, consciously, recreates man’s environment according to the most evolved conceptions in all fields. (my italics)”
Unitary Urbanism was featured in similar terms in what is perhaps the key founding document of the SI, Debord’s “Report on the Construction of Situations and on the International Situationist Tendency’s Conditions of Organization and Action” (1957). But there the project of urbanism is framed not with reference to the profession, but very consistently within the legacy of avant-garde activity and self-criticism in the Dada tradition. The move into urbanism is explained as the latest in a generational process of clarification and radicalization that must be constantly renewed. In Debord’s document, the possible role of urban critique and creativity within the situationist project comes only after a lengthy and exhaustive accounting of the group’s attitude and position in regards to all important previous phases of the avant-garde, and a recommitting to the radical refusal of artistic practice. Architecture and urbanism here appear as the answer to avant-garde critique of lettrist art practice, as the domain “outside” art, finally to be claimed by artists in the name of transforming everyday life.
But, as Constant and Debord saw it, this focus was not singular. Rather it figures as one side of a binary between which the real core enigmatic aim of the situationist project, the “construction of situations” can be pursued. Urbanism is important because of the purchase it gives on the construction of something much more ephemeral, and closer to the radical human possibilities of transformation. The mission Debord ascribes to this urbanism is formulated in the foundational Report as “systematic intervention based on the complex factors of two components in perpetual interaction: “the material environment of life and the behaviors which it gives rise to and which radically transform it” (SI 22)[26]. And, as the actual tasks to be performed by a radical urbanist practice, he identifies the two main modes of psychogeographical research: “active observation of present-day urban agglomerations and development of hypotheses on the structure of a situationist city” (23).
A critical urbanist practice on this model was undertaken for the effectiveness it promised in creating ambiances and in preparing the conditions for undefined “situations” that might contain a transformative social potential. But, at least for Debord, the true value and potential of this practice must be seen as still unproven. Psychogeographical research and the “unitary” design program it promises to inform are for Debord in 1957 still at the stage of testing their hypotheses:
The progress of psychogeography depends to a great extent on the statistical extension of its methods of observation, but above all on experimentation by means of concrete interventions in urbanism. Before this stage is attained we cannot be certain of the objective truth of the initial psychogeographical findings. But even if these findings should turn out to be false, they would still be false solutions to what is nevertheless a real problem.
The problem (call it alienation, or spectacle-market capitalism) was never in doubt for the situationists, but within a couple of years the results of their experimenting and hypothesizing, together with the natural evolution of their (principally Debord’s) critical analysis, it became obvious that positive, constructive unitary urbanism was itself just such a false solution. As a result of debates with Debord, Constant quit the SI in 1960. Attila Kotanyi joined in the same year and replaced Constant as head of the Bureau of Unitary Urbanism, which was moved from Amsterdam to Brussels and commenced an intensive critique of the profession and of prior SI activities. Issue 6 of the Internationale Situationniste is cumulatively the most concerted document of situationist anti-urbanist critique. It reclaims the term unitary urbanism(which I will spell with a lower-case “u”), and rededicates it to radical, revolutionary critique. It represents the mature stage of psychogeographic theory where that term comes to mean not so much a heuristic to support design practice as a comprehensive political-economic theory. The term “psychogeographic materialism” even appears around this time, to express this refocusing, and to project the notion of a theory of urbanism that concludes the untenability of urbanist practice. Kotanyi and Raoul Vaneigem begin from this point in framing their new “Elementary Program of the Bureau of Unitary Urbanism” in 1961. It is the first sentence of that text that declares: “L’urbanisme n’existe pas”. “Urbanism does not exist, it is merely an ideology in Marx’s sense” (IS 214).
In an editorial note to that decisive 6th issue, the collective authors show the retrospective consistency they see in repudiating constructive urbanism, referring back to the 3rd issue to quote themselves saying “The situationists have always said, ‘unitary urbanism is not a doctrine of urbanism but a critique of urbanism’” (IS 203). The editorial committee argues that even a very critical design practice at this stage of political-economic development remains a hopelessly separated activity, whatever avant-garde intentions it may express. It can be radical in its conception, but because of its containment within a spectacular economy (whether of professional planning or experimental art) it will remain unable to act on “real life”. Real life as a value, as a sphere, however vaguely that must be defined, is for everyone by definition the total, the “unity” sought in “unitary urbanism”. But the search to restore that unity to practice and to life has no prospects within this separation, and it is the fundamental economy of urbanism to produce separation. This is perhaps the central tenet of the new basic program Kotanyi and Vaneigem write for the Bureau in its late phase:
The whole of urban planning can be understood only as a society’s field of publicity-propaganda, i.e. as the organization of participation in something in which it is impossible to participate.[27]
Over the SI’s first five years, their understanding of urbanism had deepened, and their analysis of conditioning factors in the environment shifted from formal and aesthetic levels to the level of spectacle formation and control, the level at which the effective conditioning is happening. They became interested in the city, less as an interrupted funhouse, and more as a behavior of capital, And in this analysis they came to see urbanism as an equal arm of the spectacle, with information media the other. In the “Elementary Program” it read:
Modern capitalism, which organizes the reduction of all social life to a spectacle, is incapable of presenting any spectacle other than that of our own alienation. Its urbanistic dream is its masterpiece.
In Raoul Vaneigem’s “Commentaries Against Urbanism” in the same issue, it read:
Urbanism and information are complementary in capitalist and “anti-capitalist” societies; they organize the silence. (IS 232)
This insight, into thespectacular function of urban design, ushered in a new phase of the situationist project, considered its maturity. Debord dates this phase from 1962, and calls it the second, the first corresponding to years 1957-62 and “centered on the overcoming of art”[28]. In another perspective, though, the pre-SI years from 1952-1957, would be seen as the first phase, during which art and design activities continued, though under serious self-criticism. The mature phase fulfills intuitions and determinations from the previous two phases, but distinguishes itself from them in asserting definitively that urbanism too, like art, has proven itself unable to fulfill the SI’s basic ambition as an avant-garde movement – to change life, radically understood – and that it must therefore be set aside in favor of revolutionary theory and direct action. This phase culminated in May ’68 when this next stage of hypothesizing could be put to the test.
For the method of experimental utopia to truly correspond to its project, it must obviously embrace the totality, that is, its implementation will not lead to a “new urbanism”, but to a new usage of life, a new revolutionary praxis. (IS 205).
In consciousness of the nature of spectacle-consumer society, the core focus of situationist concern shifted from the side of “situation” that corresponds to the concrete built surround, to the side that corresponds to the behaviors situations produce and that produce situations. With the maturing of this perspective on radical practice, the notion itself of a situation jumps orbits to a higher state. The vague body of potentials lurking around a blind corner in an unknown neighborhood concentrate all their promise and appeal into the specific objective promise of revolutionary potential. Situation as in: “Governor, we have a situation”. A moment in which exceptional events or insurrectionary behavior have opened a concrete chance for radical change.
With this view of their mission, urbanist thinking and production assume new job descriptions and new assignments. Where the unitary urbanist was once expected to carry out “active observation of present-day urban agglomerations and development of hypotheses on the structure of a situationist city” (23), consistent practice now would require slightly different things. For example, observation of contemporary revolutionary struggles and their modes of organization around the world, and production of theory and propaganda as practical action shaping a revolutionary situation locally or abroad. Kotanyi and Vaneigem assert this propaganda function as a task of the new Bureau: “distanciation from the urban spectacle”:
Our first task is to permit people to cease identifying with the environment and model behaviors…We must support the diffusion of distrust toward those airy colorful kindergartens that constitute, in the East as in the West, the new dormitory towns. Only awakening will pose the question of a conscious construction of the urban milieu. (IS 215).
Understanding urbanism’s role in an urbanity leveraged endemically against autonomous human community and the self-management of voluntary and democratic groups, depends on understanding how urbanism functions in production of the spectacle. For urbanism is not just a branch of spectacular communication (communication without response), it is also the soil out of which the spectacle is born. Debord and the 3rd phase unitary urbanists viewed the city as representing a particular phase in the historical process of capitalization. This phase corresponds approximately to Lefebvre’s stage of “urban society”[29], characterized by “complete urbanization”. At this stage, industrialization reaches a limit in extension (geographic advance) that it will then surpass intensively (as capitalization). But the process itself of urbanization has generated contradictions which it requires a new level of production to resolve. This contradiction is the one produced by the coming together of ever-larger populations in an ultimately exploitative process whose functioning effectively requires separation, among society and within individuals. When it reaches this stage, capitalist urbanization begins generating the spectacle automatically, as an attendant need of continued production. And, however abstract and ethereal the spectacle may appear as a force, the physical reality of urbanisation’s contradictions will always require that the separation be operated also at the concrete level of the organization of territory:
167 This sociey which eliminates geographical distance reproduces distance internally as spectacular separation.
171 If all the technical forces of capitalism must be understood as tools for the making of separations, in the case of urbanism we are dealing with the equipment at the basis of these technical forces, with the treatment of the ground that suits their deployment.
172 Urbanism is the modern fulfillment of the uninterrupted task which safeguards class power: the preservation of the atomization of workers who had been dangerously brought together by urban conditions of production… (Spectacle)
With this analysis, to be against urbanism means being against preserving “the atomization of workers…brought together by urban conditions of production”. For the situationists it also meant, more directly, committing to act against that atomization, theoretically and practically, wherever it worked. Theoretically, Debord’s Society of the Spectacle and Vaneigem’s more accessible Treatise on Living for the Use of the Young Generation sought to explain the mechanisms of separation and the basic strategies of resistance. And practically the group began tolook to the possibilities of direct action as the best expression of its urban analysis and urban theory, which by this point had become indistinguishable from revolutionary theory.
The situationists had long been observing resistance struggles around the world, especially Algeria, which was in the thick of labyrinthine urban warfare between rebels and French colonists. Similarly they watched the race struggles in the United States, and looked for moments where the rage at racial oppressed might connect with rage at the oppression of everyday life. Issue 10 of Internationale Situationniste featured a long piece entitled “The Decline and Fall of the Spectacle-Market Economy”, with a press photo from the looting and burning in the Watts neighborhood of Los Angeles. The caption read: “Critique de l’urbanisme (Supermarket a Los Angeles, August 1965)”.
So, when in 1968 students and then workers began to stand up and occupy the schools and factories that ran their lives, members of the SI worked hard to make sure that the exceptional situation would be understood as one of wide open possibilities for overturning the status quo and reorganizing society (urbanized, industrialized, capitalized) through spontaneous and consensual creation. In Paris, they manned the presses and the day and night debate forum of the Council for the Maintenance of the Occupations, from which the action taken by Sorbonne students was fanning out into the social fabric of France.[30] Regionally, they networked as they could to encourage further occupations and the radicalization of demands. And internationally they reached out to every affiliated group they could think of, many of them involved in dramatic times also in their countries, in the hopes that the spark would catch, and spread world-wide.
For a short time, the situationist lived the possibility, rare in history, of putting the hypotheses of an anarchic revolutionary utopianism to the test, and with it, the potentials of a “situationist” urban theory at both its most critical and its most constructive. For, with a certain threshold crossed, the design of cities and the making of art could once again become honorable activities, in the context of a dis-alienated society of radical self-determination, organized around democratic work-place councils.
Failing its revolutionary potentials, May ’68 would be the culmination of the situationist project, and the great last test of its urban theory. A final phase of the movement, from ‘68 and to 1972 when Debord disbanded it, was spent interpreting the results. This task history continues.
Of all the affairs we participate in, with or without interest, the groping search for a new way of life is the only aspect still impassioning. Aesthetic and other disciplines have proved blatantly inadequate in this regard and merit the greatest detachment. (Debord, “Introduction to a Critique of Urban Geography, 1955; SI 5)
Pouvoir au conseils ouvriers! (Power to the workers’ councils! Street graffiti attributed to the Situationist Internationale, Paris, May ’68.)
Situationist Journals
Potlatch: Bulletin d’information du groupe français de l’Internationale lettrise 1954-1957, 1996.Paris: Éditions Allia.
Les Lèvres nues 1954/1958, 1998. Paris: Éditions Allia.
Internationale Situationniste 1958-1969, 1997. Paris: Librairie Artheme Fayard.
Knabb, Ken (ed., tr.) 1981.Situationist International Anthology. Berkeley: Bureau of Public Secrets.
Online Sources
Situationist International Text Library: http://library.nothingness.org/articles/SI/all/
Situationist International Online: http://www.cddc.vt.edu/sionline/
Notbored.org: http://www.notbored.org/SI.html
Single-Author Works
Chtcheglov, Ivan2006. Écrits retrouvés. Paris: Éditions Allia.
Debord, Guy 2004. Mémoires. Structures portantes d’Asger Jorn. Paris: Éditions Allia.
Debord, Guy1983. Society of the Spectacle. Detroit: Black & Red. Also, free online at http://library.nothingness.org/articles/SI/en/pub_contents/4
Debord, Guy1992. Commentary on the Society of the Spectacle. Paris: Gallimard.
Jorn, Asger 2001(1957). Pour la forme: Ébauche d’une méthodologie des arts.Paris: Éditions Allia.
Vaneigem, Raoul 1992 (1967). Traité du savoir-vivre a l’usage des jeunes génerations. Paris: Gallimard. Also, free online at http://arikel.free.fr/aides/vaneigem/
Vienet, René 1992 (1968). Enragés and Situationists in the Occupation Movement, France, May ’68Tr RichardParry, Helen Potter. New York: Autonomedia.
About the SI
Baumeister, Biene & Zwi Negator 2005.Situationistiche Revolutionstheorie, Stuttgart: Schmetterling Verlag.
Dumontier, Pascal 1990. Les situationnistes et mai ’68 : théories et pratique de la révolution (1966-1972). Paris: Gérard Lebovici (coll. Champs libres).
Donné, Boris 2004. Pour Mémoires: un essai d’élucidation des mémoires de Guy Debord. Paris: Éditions Allia.
Marcus, Greil1990. Lipstick Traces: A Secret History of the Twentieth Century. Cambridge: Harvard University Press.
Sadler, Simon 1999. The Situationist City. Cambridge: MIT Press.
Wigley, Mark 1999. Constant’s New Babylon: The Hyperarchitecture of Desire. Rotterdam: 010 Publishers.
[[3]]“L’étage suivante”, Internationale Situationniste No. 7, Paris: 1962, p. 47. Also, IS, p. 287.
   (↵ returns to text)
  1. Consider the famous Bush aide’s comment to Ron Suskind in 2004, expressing imperial contempt for the “reality-based community”: Suskind, Ron. “Faith, Certainty and the Presidency of George W. Bush“, The New York Times Magazine200410-17
  2. cf. Eyal Weizman “The Art of War”, Frieze Magazine, May 2006, http://www.frieze.com/magazine.asp; on Israeli Defense Forces using Guy Debord to theorize urban combat strategy in the Occupied Territories
  3. Guy Debord, “Sick Planet”, 1971, http://piratecinema.org/textz/guy_debord_the_sick_planet.html; unless otherwise noted, translations are mine
  4. cf. Debord, “Introduction to a Critique of Urban Geography”, (SI 6)
  5. Text of a poster printed and distributed in May ’68 by the situationist-oriented Council for the Maintenance of the Occupations. (Viénet 84)
  6. Fully reprinted as Potlatch 1954/1957.Paris: Éditions Allia, 1996
  7. Fully reprinted as Les Lèvres nues 1954/1958. Paris: Éditions Allia, 1998
  8. In Futurism there was Sant’Elia; see his “Manifesto of Futurist Architecture” (1914) http://www.unknown.nu/futurism/architecture.html. In Dada there was Johannes Baader with his Plasto-Dio-Dada-Drama (1920); http://members.chello.nl/j.seegers1/dada_files/baader_plasto.html. And, just next-door to Dada, Kurt Schwitters with his perennial Merzbau (1920-36)
  9. For more on the Situationist International in relation to art and design history, see my translation essay ‘“Form and Structure” Reframed: a New “On the Cult of the New in our Century”’, in Crayon 5, eds Andrew Levy and Roberto Harisson, New York, Forthcoming Spring 2008
  10. For Jorn’s ideas on Design, Architecture and the International Movement for an Imaginist Bauhaus, see Asger Jorn, Pour la forme: Ébauche d’une méthodologie des arts (1957). My translation essay above is of/on an essay from this collection
  11. Also see the indispensable interpretive text Pour Mémoires: un essai d’élucidation des mémoires de Guy Debord, by Boris Donné. An excellent introduction to the Situationist story, as is Greil Marcus’ Lipstick Traces: A Secret History of the 20th Century
  12. For an excellent overview of walking and dérive-based art practices, see Francesco Carer, Walkscapes: Walking as an Aesthetic Practice, Barcelona: Ediciones Gili, 2005
  13. For one example, see the first-day program of TU Delft’s 2006 “Urban Body” workshop in Madrid, run by Delft’s Spacelab and Stalker from Rome : http://www.bk.tudelft.nl/live/pagina.jsp?id=f67525b5-a5e3-44bb-bd84-897818034e62&lang=en (accessed 16.1.08)
  14. For an early, pre-Situationist denunciation of Le Corbusier, see “Les gratte-ciel par les racines” in number 5 of Potlatch (Potlach 21-22)
  15. “Projet d’embellissements rationels de la ville de Paris”, Potlatch No. 23, 13 October 1955 (Potlatch 110-111)
  16. Cf. Ivan Chtcheglov’s “Introduction au continent contrescarpe” from 1954 (Écrits 30-31) or Ralph Rumney’s “Psychogeographic Map of Venice” from 1957 (Sadler 79) or Abdelhafid Khatib’s “Essai de description psychogéographique des Halles”, IS #2 1958 (IS 45), or Debord’s maps, “Psychogeographic Guide to Paris” (1956) and “Naked City: Illustration of the Hypothesis of Moving Plates in Psychogéography” (1957)
  17. Mark Wigley’s book is the most thorough monograph on Constant: Constant’s New Babylon: The Hyper-Architecture of Desire (1999)
  18. E.g. his ParisBrain plan for La Defense: http://www.noxarch.com/flash_content/flash_content.html. Also, Las Spuybroek, NOX: Machining Architecture, London: Thames and Hudson, 2004
  19. http://www.chora.org/1990/chora%20xiamen.html; also Chora and Raoul Bunschoten, Urban Flotsam, Uitgeverij: 010 Publishers, 2000
  20. http://www.anarchitektur.com/; see also their Camp for Oppositional Architecture (2004,2006), http://www.oppositionalarchitecture.com
  21. http://www.spacelab.tudelft.nl/
  22. http://www.stalkerlab.it/
  23. If you count them as a planning office, and you should; Park Fiction at http://www.parkfiction.org/
  24. For the most thorough examinations of the situationists’ revolutionary theory to date, see Pascal Dumontier, Les situationnistes et mai ’68 : théories et pratique de la révolution (1966-1972), Paris: Gérard Lebovici (coll. Champs libres), 1990, and Biene Baumeister and Zwi Negator, Situationistiche Revolutionstheorie, Stuttgart: Schmetterling Verlag, 2005
  25. Ken Knabb’s translation as published in the Situationist International Anthology has several important sections excised to shorten the text. The complete text is available from the Situationist International Online website: http://www.cddc.vt.edu/sionline/si/report.html
  26. Attila Kotanyi and Raoul Vaneigem, “Basic Program of the Bureau of Unitary Urbanism”, in Situationist International Anthology, edited and translated by Ken Knabb, Berkeley: Bureau of Public Secrets, 1981. (Originally, Internationale Situationniste No. 6, Paris: 1961.)
  27. This comes in the first items of Debord’s text “La question de l’organization pour l’I.S.” (1968); IS 680-681
  28. cf. Henri Lefebvre, The Urban Revolution, chapter 1tr. Robert Bononno, Minneapolis: University of Minnesota Press, 2003
  29. For a contemporary situationist account of the SI’s involvement in the events of May ’68, see Vienet’s Enragés and Situationists in the Occupation Movement, France, May ’68