Tuesday, December 05, 2023

 

A European initiative aims to ensure fair trials for children and young people with special language needs


Most teenagers and young adults who commit a crime and face the justice system have a severe language disorder


Grant and Award Announcement

UNIVERSITAT OBERTA DE CATALUNYA (UOC)




Nearly 70% of children and young adults who face the justice system for committing a crime have serious language difficulties that affect their comprehension and expression skills. This severe disorder leaves them defenceless or unable to fully exercise their right to be heard and, consequently, exposed to harsher sentences than individuals without this disorder.

Most of these young people are undiagnosed, so both they and the judicial system are unaware that they suffer from this disorder. This means that measures and resources to help them better understand and cope with the process in which they are immersed cannot be introduced.

With the aim of remedying this situation, a Europe-wide project has just been launched involving the Universitat Oberta de Catalunya (UOC) to help young people facing the judicial system to have a fair trial. This means that they should be able to understand why they are being tried and to respond accordingly, given that court proceedings are based on procedures that require a high level of verbal ability.

"They are people who find it difficult to even understand short sentences, so imagine them being subjected to the rhetoric and complexity of legal language, which makes it so difficult even for individuals without this problem to understand the information given to them in this context," said speech therapy expert Alfonso Igualada, PhD in language sciences, member of the UOC's Faculty of Psychology and Education Sciences and researcher with the Cognition and Language Research Group (GRECIL, UOC/UB)affiliated the Neurodevelop eHealth Lab of the UOC's eHealth Center.

This four-year project is called Justice to youth language needs: human rights undermined by an invisible disadvantage (Y-JustLang). A total of 23 European countries are currently involved, and it forms part of the COST initiative (European Cooperation in Science and Technology). The project promotes actions that put researchers and organizations in contact with the aim of putting certain social issues on countries' agendas. As a result, Y-JustLang involves not only researchers, but also judges, paediatricians and professional associations linked to the judicial system, among others.

 

A silent disorder

Developmental language disorder affects about 7% of the population. It is characterized by severe and persistent difficulties in understanding and expressing language. "Children find it difficult, for example, to arrange words in a sentence according to the rules we use in a language," said Igualada, who explained that if it is detected and treated early, the symptoms improve. Otherwise, this disorder can have a severe long-term impact emotionally, socially and academically.

"Language is the tool we all use to socialize, learn or get a job", said Igualada, who added that children with this disorder are often bullied and can have significant social difficulties. In addition, it is a somewhat invisible disorder, since most children suffering from it tend to be quiet and not to establish much communication, which means they are often mistaken for introverts.

The Y-JustLang project stems from initial collaboration between the UOC and various universities led by researcher María Arche, from the University of Greenwich, focusing on language development in adolescence and youth. As language plays a key role because it is the tool we use to communicate with our families, school and colleagues and to find a job, when there is an undiagnosed and untreated disorder, the risk of failure at school, of being bullied and of being unable to find a job increases, and this is so even more if the person is from a disadvantaged socio-economic background.

 

Greater risk of social exclusion

Due to this chain of events, several studies carried out in English-speaking countries have shown that language problems are up to six times more prevalent in under-18s who commit crimes. In addition, if these children who commit crimes have not been diagnosed and treated, the risk of reoffending increases.

"There's a disproportionate number of young people with language disorders in the justice system, and this is what has driven the launch of this project," explained Igualada. "Research has shown that judges give harsher sentences to people with this difficulty. This can be explained by the fact that, because they don't quite understand what they're being told, they often remain silent or give meaningless answers when asked, and judges can interpret this as not collaborating or as not taking things seriously."

The project, which has only just begun, is split into six working groups, each of which will try to contribute knowledge about a specific area. The first group focuses on learning more about language development in adolescence and early youth. The second one will analyse recordings of police and judicial interactions with teenagers to detect difficulties in understanding and communication breakdowns. The third group will draw up an inventory of language disorder assessment tests in the various EU countries. The fourth will aim to draw up a set of characteristics of these young people and see what the risk factors are. The fifth group will focus on the legal frameworks of the various countries and on what regulations should be put in place to help these youths; and, finally, the sixth group will focus on disseminating and raising awareness of the problem.

The project is coordinated by a management committee composed of two people from each country. In the case of Spain, the committee members are Alfonso Igualada from the UOC, and Josep Quer from Pompeu Fabra University. Their task will be to make decisions that affect how the project moves forward. As a researcher in the UOC's GRECIL group, Igualada will be involved in the research on language development, in the inventory of language disorder assessment tests, and in disseminating and educating people about this problem.

This UOC research contributes to UN Sustainable Development Goals (SDGs) 3, Good Health and Well-being; 10, Reduced Inequalities; and 16, Peace, Justice and Strong Institutions.

 

UOC R&I

The UOC's research and innovation (R&I) is helping overcome pressing challenges faced by global societies in the 21st century by studying interactions between technology and human & social sciences with a specific focus on the network society, e-learning and e-health.

Over 500 researchers and more than 50 research groups work in the UOC's seven faculties, its eLearning Research programme and its two research centres: the Internet Interdisciplinary Institute (IN3) and the eHealth Center (eHC).

The university also develops online learning innovations at its eLearning Innovation Center (eLinC), as well as UOC community entrepreneurship and knowledge transfer via the Hubbik platform.

Open knowledge and the goals of the United Nations 2030 Agenda for Sustainable Development serve as strategic pillars for the UOC's teaching, research and innovation. More information: research.uoc.edu.


Soil drought weakens forest microclimatic cooling


Peer-Reviewed Publication

STOCKHOLM UNIVERSITY

Tree canopies 

IMAGE: 

TREE CANOPIES PROTECT THE FOREST UNDERSTORY FROM EXTREMELY HOT TEMPERATURES. PHOTO: JOSEF BRŮNA

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CREDIT: JOSEF BRŮNA





Scientists from Stockholm University have investigated the mechanisms that create cool microclimates beneath forest canopies during warm and dry summer days. The study reveals how canopy shading and water evaporation together create cooler forest microclimates compared to temperatures outside forests. The article is published in Agricultural and Forest Meteorology.

”The findings are alarming in the context of climate change as more frequent and more severe droughts may threaten the cooling functions of forests,” says Caroline Greiser, researcher at the Physical Geography Department, Stockholm University, and leading author of the study.

Forests can buffer hot temperature extremes – a natural air conditioning effect. They do so by providing shade and by evaporating and transpiring water. “Imagine forests sweating in the heat to keep their internal temperature low,” says Caroline Greiser and continues: “We need to drink a lot to be able to sweat, and forests need soil water.”

The study, spanning four consequent summer seasons and based in temperate broadleaf forests in Central Europe, brings to light the consistent finding that daily maximum temperatures in forest understories are, on average, 2°C cooler than their surroundings. Small tree seedlings as well as much of the forest biodiversity depends on these buffered forests microclimates.

Drier soils create a weaker cooling effect

The research team found that higher soil moisture levels improved the cooling effect in forests, emphasizing the combined contributions of canopy shade, soil water evaporation, and plant transpiration to cooler microclimates.

”We used a network of small temperature and moisture loggers spread across different forest patches to link daily fluctuations of sub-canopy temperature to canopy cover and daily fluctuations of soil moisture at a given site,” says Caroline Greiser. She further adds: “Forest microclimate research often focuses on canopy cover as a major driver of understory cooling. Our study highlights the role of soil water in buffering understories from the rising heat.”

As climate change causes more disturbances to forest canopies and increases the risk of soil droughts, forests may lose their cooling function. The researchers therefore emphasize the significance of incorporating soil moisture into models predicting forest microclimate, biodiversity, and tree regeneration.


Fieldwork impressions. Downloading data from the temperature and soil moisture loggers. Photo: Lucia Hederová

The temperate broadleaf forest in the Czech Republic, where the study was conducted. Photo: Josef Brůna

 HIVES

Unravelling the mechanism of urticaria from eruption shapes


Innovation for developing new treatments based on eruption morphology in mathematical dermatology


Peer-Reviewed Publication

INSTITUTE FOR THE ADVANCED STUDY OF HUMAN BIOLOGY (ASHBI)

Unravelling the mechanism of urticaria from eruption shapes 

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A RESEARCH GROUP LED BY PROFESSOR SUNGRIM SEIRIN-LEE AT KYOTO UNIVERSITY INSTITUTE FOR THE ADVANCED STUDY OF HUMAN BIOLOGY (WPI-ASHBI) LEVERAGED HIERARCHICAL MATHEMATICAL MODELING TO ANALYZE THE SHAPES OF SKIN ERUPTIONS AND LINK THESE MORPHOLOGICAL FEATURES TO THE IN VIVO PATHOLOGICAL DYNAMICS OF CHRONIC SPONTANEOUS URTICARIA CSU.

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CREDIT: KANON TANAKA (HTTPS://WWW.KANONTANAKA-ILLUSTRATION-WEBDESIGN-SCIENCE.COM/INDEX.HTML)




The skin is the largest organ in the human body and plays an important role in maintaining homeostasis as well as protecting the body from the outside environment. Skin diseases can be life-threatening or heavily impair patients’ quality of life. Urticaria (also called “hives”) is common, affecting at least one in five people in their lifetime, and can persist for years or even decades. Many skin diseases are unique to humans, and their pathogenesis often remains unclear due to the lack of an appropriate experimental animal model and limited clinical data. One such human-specific disease is chronic spontaneous urticaria (CSU), which is characterized by the appearance of skin eruptions called wheals, which have a range of sizes and shapes and are accompanied by itching.

 

Despite CSU having a clear and visible appearance on the skin surface, the mechanism underlying the various shapes of wheals in vivo remains largely obscured. Recently, a number of pathophysiological characteristics of urticaria have been investigated, including autoimmune responses, cellular infiltrates, and activation of the coagulation pathway by the complement system. It is therefore of great importance to integrate these elements into their dynamics in vivo in order to develop more effective patient-specific treatments.

 

To address this, a research group led by Professor Sungrim Seirin-Lee at Kyoto University Institute for the Advanced Study of Human Biology (WPI-ASHBi) leveraged hierarchical mathematical modeling to analyze the shapes of skin eruptions and link these morphological features to the in vivo pathological dynamics of CSU. By incorporating both the intravascular and extravascular dynamics using in vitro experimental data, they classified the skin eruption patterns into five potential types. Using these patterns, the researchers developed the Criteria for Classification of Eruption Geometry (EGe criteria) according to their relations with tissue factor and histamine dynamics of mast cells, which act on blood vessels and induce wheal formation. The researchers then demonstrated the validity of their mathematical model to classify CSU according to these criteria in 105 patients, and found the reliability to be as high as 87.6% when analyzed by dermatologists.

 

“This study was the first to use mathematical models to clarify the pathophysiology of skin eruptions according to their morphology, and can help to pave the way for alternative treatment methods. For example, patients might take photos of their skin eruptions to provide data for a definitive diagnosis of underlying causes, or the effectiveness of treatment can be monitored over time. In addition, this study shows the promise of mathematical models in the understanding the mechanisms of human-specific diseases, where animal models are not available,” Seirin-Lee said.

 

Through these efforts, the authors hope to pioneer mathematical dermatology as a new multidisciplinary research field for practical use, integrating mathematical science and clinical dermatology for elucidating the pathophysiology of skin diseases and developing new strategies for managing intractable skin diseases.

 

Paper Information

Sungrim Seirin-Lee, Daiki Matsubara, Yuhki Yanase, Takuma Kunieda, Shunsuke Takahagi, and Michihiro Hide (2023) Mathematical-structure based Morphological Classification of Skin Eruptions and Linking to the Pathophysiological State of Chronic Spontaneous Urticaria, Communications Medicine

 

Small publishers increasingly important for translated literature

Reports and Proceedings

UPPSALA UNIVERSITY

Jana Rüegg, Doctor at the Department of Literature, Uppsala University, Sweden, 

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JANA RÜEGG, DOCTOR AT THE DEPARTMENT OF LITERATURE, UPPSALA UNIVERSITY, SWEDEN

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CREDIT: UTE RÜEGG




Over the period 1970–2016, small publishing houses became increasingly important for the publication of literature in translation in Sweden. More than ever, Nobel laureates are being published by relatively small independent publishers. A specialisation in translations often stems from a publisher’s personal interest in a language or geographical area. These conclusions are drawn in a doctoral thesis submitted at Uppsala University.

“It’s remarkable how quickly the small publishers became major actors for translated literature in the Swedish book market. Between 1978 and 1997, ten future recipients of the Nobel Prize in Literature were introduced in Swedish translation by a small publishing house founded after 1975. This is an important factor to consider, since publishing these authors before they are awarded the Nobel Prize entails a greater financial risk for a publisher than after the prize, when publication can be associated with prestige and guaranteed attention,” says Jana Rüegg, Doctor in literature, Uppsala University.

Many new publishing houses were founded after the introduction of state subsidies for literature in 1975 and several of them rapidly became important specifically for translations. Another wave of newly established small publishers has entered the market since the beginning of the 21st century. They have taken on a vital role in the publication of translations in Sweden, particularly from major languages such as French, German and Spanish.

In the years around 2010, several large publishers experienced financial crises, which led them to let go of translated authors whom other publishers were then able to take over, as the thesis shows. The small publishers have also influenced the selection of authors translated into Swedish.

“Over the period 1970–2000, numerous editions of works primarily by male writers were published, translated from the major languages French, German and Spanish. This was partly because of the very extensive publication of classics, which are a type of literature associated in this context with male authors such as Jules Verne, Franz Kafka or Marcel Proust,” says Rüegg.

Her research shows that small publishers founded in the 21st century have played an enormously important role in the publication of translations of works by female writers from French, German and Spanish. After 2005, the gap has narrowed and around 40 per cent of published translations from those three languages have female authors.

The thesis consists of two parts.

The first part, Nobelbanor (Nobel Trajectories), studies translated Nobel laureates in literature between 1970 and 2016 on the Swedish book market and whether they were published before or after the Nobel Prize. The study is based on a dataset of all editions of these authors in Swedish translation up to 2017.

To a large extent, the 45 Nobel Prize laureates were available in Swedish translation before the prize. The fact that 49 per cent of them were published in paperback editions before being awarded the prize shows that the publishers saw a potential demand for large editions of these authors. On average, 20 years passes between the first Swedish translation and the Nobel Prize, which means that in many cases, the Nobel Prize reawakens an interest in an author who has been forgotten by the Swedish book market since their first introduction.

Over time there is a clear migration from larger to smaller publishers in the publication of translated Nobel laureates.

The second part of the thesis, Förmedla och förlägga (Transmit and Publish), focuses on translations from French, German and Spanish published by Swedish publishers between 1970 and 2016. The study is based on a dataset of all fiction editions for adults translated from the three languages in Sweden from 1970 to 2016.

Over time, the number of translations from French and German has decreased and towards the end of the period studied, these translations were increasingly published by small niche publishers rather than large publishing houses. Translations from Spanish follow a different pattern, because it was not until the 1980s that Swedish publishers seriously began publishing translations from that language, including big names such as Gabriel García Márquez and Isabel Allende.

Large publishers continue to publish translations from Spanish to a greater extent, even towards the end of the period studied. According to Rüegg, the historical status of the languages on the Swedish book market clearly plays a role in determining what is translated and published.

“In French and German, there is a long tradition of publication in Sweden and here we find translations from a wide range of genres, from classics and Nobel laureates to popular fiction. Translations from Spanish do not have such a long tradition of publication in the Swedish book market, which has led to very few Spanish-language classics being translated and published and also to relatively limited publication of popular Spanish-language literature in translation during this period,” Rüegg concludes.


Tiny electromagnets made of ultra-thin carbon


When terahertz pulses strike graphene discs


Peer-Reviewed Publication

HELMHOLTZ-ZENTRUM DRESDEN-ROSSENDORF

HZDR's FELBE free-electron lasers 

IMAGE: 

DR. STEPHAN WINNERL (RIGHT) TALKS TO FELBE PHYSICIST DR. JOHN MICHAEL KLOPF ABOUT EXPERIMENTS AT THE HZDR'S FELBE FREE-ELECTRON LASERS.

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CREDIT: HZDR/OLIVER KILLIG




Graphene, that is extremely thin carbon, is considered a true miracle material. An international research team has now added another facet to its diverse properties with experiments at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR): The experts, led by the University of Duisburg-Essen (UDE), fired short terahertz pulses at micrometer-sized discs of graphene, which briefly turned these minuscule objects into surprisingly strong magnets. This discovery may prove useful for developing future magnetic switches and storage devices. The working group presents its study in the scientific online journal Nature Communications (DOI: 10.1038/s41467-023-43412-x).

Graphene consists of an ultra-thin sheet of just one layer of carbon atoms. But the material, which was only discovered as recently as 2004, displays remarkable properties. Among them is its ability to conduct electricity extremely well, and that is precisely what international researchers from Germany, Poland, India, and the USA took advantage of.

They applied thousands of tiny, micrometer-sized graphene discs onto a small chip using established semiconductor techniques. This chip was then exposed to a particular type of radiation situated between the microwave and infrared range: short terahertz pulses.

To achieve the best possible conditions, the working group, led by the UDE, used a particular light source for the experiment: The FELBE free-electron laser at the HZDR can generate extremely intense terahertz pulses. The astonishing result: "The tiny graphene disks briefly turned into electromagnets," reports HZDR physicist Dr. Stephan Winnerl.

"We were able to generate magnetic fields in the range of 0.5 Tesla, which is roughly ten thousand times the Earth's magnetic field." These were short magnetic pulses, only about ten picoseconds or one-hundredth of a billionth of a second long.

Radiation pulses stir electrons

The prerequisite for success: The researchers had to polarize the terahertz flashes in a specific way. Specialized optics changed the direction of oscillation of the radiation so that it moved, figuratively speaking, helically through space.

When these circularly polarized flashes hit the micrometer-sized graphene discs, the decisive effect occurred: Stimulated by the radiation, the free electrons in the discs began to circle – just like water in a bucket stirred with a wooden spoon. And because, according to the basic laws of physics, a circulating current always generates a magnetic field, the graphene disks mutated into tiny electromagnets.

"The idea is actually quite simple," says Martin Mittendorff, professor at the University of Duisburg-Essen. "In hindsight, we are surprised nobody had done it before." Equally astonishing is the efficiency of the process: Compared to experiments irradiating nanoparticles of gold with light, the experiment at the HZDR was a million times more efficient – an impressive increase. The new phenomenon could initially be used for scientific experiments in which material samples are exposed to short but strong magnetic pulses to investigate certain material properties in more detail.

The advantage: "With our method, the magnetic field does not reverse polarity, as is the case with many other methods," explains Winnerl. "It, therefore, remains unipolar." In other words, during the ten picoseconds that the magnetic pulse from the graphene disks lasts, the north pole remains a north pole and the south pole a south pole – a potential advantage for certain series of experiments.

The dream of magnetic electronics

In the long run, those minuscule magnets might even be useful for certain future technologies: As ultra-short radiation flashes generate them, the graphene discs could carry out extremely fast and precise magnetic switching operations. This would be interesting for magnetic storage technology, for example, but also for so-called spintronics – a form of magnetic electronics.

Here, instead of electrical charges flowing in a processor, weak magnetic fields in the form of electron spins are passed on like tiny batons. This may, so it is hoped, significantly speed up the switching processes once again. Graphene disks could conceivably be used as switchable electromagnets to control future spintronic chips.

However, experts would have to invent very small, highly miniaturized terahertz sources for this purpose – certainly still a long way to go. "You cannot use a full-blown free-electron laser for this, like the one we used in our experiment," comments Stephan Winnerl. "Nevertheless, radiation sources fitting on a laboratory table should be sufficient for future scientific experiments." Such significantly more compact terahertz sources can already be found in some research facilities.

Publication:

J.W. Han, P. Sai, D-B. But, E. Uykur, S. Winnerl, G. Kumar, M.L. Chin, R.L. Myers-Ward, M.T. Dejarld, K.M. Daniels, T.E. Murphy, W. Knap, M. Mittendorff: Strong transient magnetic fields induced by THz-driven plasmons in graphene disks, Nature Communications, 2023, (DOI: 10.1038/s41467-023-43412-x)

The Helmholtz-Zentrum Dresden-Rossendorf (HZDR) performs – as an independent German research center – research in the fields of energy, health, and matter. We focus on answering the following questions:

•             How can energy and resources be utilized in an efficient, safe, and sustainable way?

•             How can malignant tumors be more precisely visualized, characterized, and more effectively treated?

•             How do matter and materials behave under the influence of strong fields and in smallest dimensions?

To help answer these research questions, HZDR operates large-scale facilities, which are also used by visiting researchers: the Ion Beam Center, the Dresden High Magnetic Field Laboratory and the ELBE Center for High-Power Radiation Sources.

HZDR is a member of the Helmholtz Association and has six sites (Dresden, Freiberg, Görlitz, Grenoble, Leipzig, Schenefeld near Hamburg) with almost 1,500 members of staff, of whom about 670 are scientists, including 220 Ph.D. candidates.

The electrons from the ELBE accelerator generate laser light in one of the two blue-metallic magnetic structures, the so-called undulators.

CREDIT

HZDR/Christoph Reichelt

When a circularly polarized light pulse (red) hits a micrometre-sized graphene disc (grey), a magnetic field is created for a fraction of an instant (black lines).

CREDIT

Lucchesi, Uta (HZDR)

 

Rice engineers tackle hard-to-map class of materials


Technique could help tap 2D van der Waals ferroelectrics for use in next-generation electronics


Peer-Reviewed Publication

RICE UNIVERSITY

researchers 

IMAGE: 

YIMO HAN (LEFT) AND CHUQIAO SHI

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CREDIT: PHOTO BY GUSTAVO RASKOSKY/RICE UNIVERSITY




HOUSTON – (Dec. 4th, 2023) – The properties that make materials like semiconductors so sought after result from the way their atoms are connected, and insight into these atomic configurations can help scientists design new materials or use existing materials in new, unforeseen ways.

Rice University materials scientist Yimo Han and collaborators mapped out the structural features of a 2D ferroelectric material made of tin and selenium atoms, showing how domains ⎯ areas of the material in which molecules are identically oriented ⎯ impact the behavior of the material.

“Ferroelectric materials are widely used in applications such as memories and sensors, and they will likely be increasingly useful for building next-generation nanoelectronics and in-memory computing,” said Chuqiao Shi, a Rice graduate student in the Han lab and lead author on a study published in Nature Communications. “That’s because 2D ferroelectric materials have remarkable properties and are characterized by their atomic thinness and enhanced integration capabilities.”

In ferroelectric materials, molecules are polarized, and they also segregate and align based on polarization. Moreover, 2D ferroelectrics change shape in response to electrical stimuli ⎯ a phenomenon known as flexoelectricity. In the tin-selenium crystal that is the focus of this research, molecules self-organize into patches or domains, and the flexoelectric effect causes these to move, giving rise to structural shifts in the material that impact its properties and behavior.

“It’s really important that we understand the intricate relationship between atomic structure and electric polarization, which is a critical feature in ferroelectric materials,” said Han, an assistant professor of materials science and nanoengineering. “This domain-dependent structure can be very useful for engineers to figure out how to best use the material and rely on its properties to design applications.”

Unlike conventional ferroelectrics in which atoms are bound by a rigid lattice, in the tin-selenite crystal studied by Han and Shi, the forces that bind the atoms together are weaker, giving the atomic lattice a more supple and pliant quality.

“The material belongs to a special class of 2D materials known as van der Waals ferroelectrics, whose properties could serve to design next-generation, ultra-thin data storage devices and sensors,” Shi said. “Van der Waals forces are weaker than chemical bonds ⎯ they’re the same kind of forces that allow geckos to defy gravity and climb walls.

“The soft in-plane lattices of this 2D material coupled with relatively weaker interlayer van der Waals forces give rise to a unique structural landscape. These distinctive structural features generate effects exclusive to 2D ferroelectrics that are absent in their bulk counterparts.”

The greater degree of flexibility or freedom of the atomic lattice in 2D van der Waals ferroelectrics makes it more difficult to map out the relationship between polarization and material structure.

“In our study, we developed a new technique that allows us to look at both in-plane strain and out-of-plane stacking order simultaneously, which is something conventional investigations of this material were unable to do previously,” Han said. “Our findings are set to revolutionize domain engineering in 2D van der Waals ferroelectrics and position them as fundamental building blocks in the development of advanced devices for the future,” Han said.

The research was supported by the National Science Foundation (2239545, 1231319, 2132105, 1753054, 2039380, 1719875), the Welch Foundation (C-2065), the Department of Energy (DE-SC0020042, DE-SC0023353) and Texas A&M High Performance Research Computing.

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This release can be found online at news.rice.edu.

Follow Rice News and Media Relations via Twitter @RiceUNews.

Peer-reviewed paper:

“Domain-dependent strain and stacking in two-dimensional van der Waals ferroelectrics” | Nature Communications | DOI: 10.1038/s41467-023-42947-3

Authors: Chuqiao Shi, Nannan Mao, Kena Zhang, Tianyi Zhang, Ming-Hui Chiu, Kenna Ashen, Bo Wang, Xiuyu Tang, Galio Guo, Shiming Lei, Longqing Chen, Ye Cao, Xiaofeng Qian, Jing Kong and Yimo Han

https://www.nature.com/articles/s41467-023-42947-3

Image downloads:

https://news-network.rice.edu/news/files/2023/11/231107_Yimo-Han-Chuqiao-Shi_Gustavo-3.jpg
CAPTION: Yimo Han (left) and Chuqiao Shi (Photo by Gustavo Raskosky/Rice University)

https://news-network.rice.edu/news/files/2023/11/figure.jpg
CAPTION: Rice researchers used four-dimensional scanning transmission electron microscopy to analyze the structure of the material (first panel from left); their analysis yielded a ferroelastic strain map of a flake of the material (second and third panels). Insets on the third panel represent polarization directions in different stripe domains. (Image courtesy of Han lab/Rice University)

 
Rice researchers used four-dimensional scanning transmission electron microscopy to analyze the structure of the material (first panel from left); their analysis yielded a ferroelastic strain map of a flake of the material (second and third panels). Insets on the third panel represent polarization directions in different stripe domains.

CREDIT

Image courtesy of Han lab/Rice University



Related stories:

Interdisciplinary Rice team tackles the future of semiconductors:
https://news.rice.edu/news/2023/interdisciplinary-rice-team-tackles-future-semiconductors

Gold buckyballs, oft-used nanoparticle ‘seeds’ are one and the same:
https://news.rice.edu/news/2023/gold-buckyballs-oft-used-nanoparticle-seeds-are-one-and-same

Yimo Han wins NSF CAREER Award:
https://msne.rice.edu/news/yimo-han-wins-nsf-career-award

Links:

Han lab: https://hanlab.blogs.rice.edu/
Department of Materials Science and Nanoengineering: msne.rice.edu
George R. Brown School of Engineering: https://engineering.rice.edu/

About Rice:

Located on a 300-acre forested campus in Houston, Rice University is consistently ranked among the nation’s top 20 universities by U.S. News & World Report. Rice has highly respected schools of architecture, business, continuing studies, engineering, humanities, music, natural sciences and social sciences and is home to the Baker Institute for Public Policy. With 4,574 undergraduates and 3,982 graduate students, Rice’s undergraduate student-to-faculty ratio is just under 6-to-1. Its residential college system builds close-knit communities and lifelong friendships, just one reason why Rice is ranked No. 1 for lots of race/class interaction, No. 2 for best-run colleges and No. 12 for quality of life by the Princeton Review. Rice is also rated as a best value among private universities by Kiplinger’s Personal Finance.
 

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