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Major Discovery about Materials and Their Atomic Structure

EPFL researchers have made a major discovery about the structure of barium titanate a material used in day-to-day objects. The researchers’ findings now question the prevailing concepts on the displacement of the material’s atoms. ....

Sina Hashemizadeh , Emad Oveisi , Dragan Damjanovic , Head Of Group , School Of Engineering , Interdisciplinary Centre For Electron Microscopy , Nature Communications , Swiss National Science Foundation , Study Refutes , Existing Theories , Their Atomic , Functional Oxides , Most Powerful , Electron Microscopy , Titan Themis , Senior Scientist , Interdisciplinary Centre , Scale Phenomena , தலை ஆஃப் குழு , பள்ளி ஆஃப் பொறியியல் , இயற்கை தகவல்தொடர்புகள் , சுவிஸ் தேசிய அறிவியல் அடித்தளம் , பெரும்பாலானவை பவர்‌ஃபுல் , எதிர் மின்னணு நுண்ணோக்கி , டைட்டன் தீமிஸ் , மூத்தவர் விஞ்ஞானி ,

Microscope reveals secrets of a material's structure

Emad Oveisi in front of the “Titan-Themis” microscope © Alain Herzog / 2021 EPFL
EPFL scientists have made an important discovery about the structure of barium titanate, a material used in everyday objects. Their findings refute existing theories on the displacement of the material’s atoms.
Barium titanate is a ferroelectric material used in nearly all electronic devices – computers, smartphones and even electric cars. It’s used to make the sensors and capacitors they run on, for example. “A single smartphone generally has around 700 capacitors containing barium titanate, and trillions of these capacitors are made every year,” says Dragan Damjanovic, an EPFL professor and head of the Group for Ferroelectrics and Functional Oxides at EPFL’s School of Engineering. Despite barium titanate’s widespread use, however, researchers still don’t fully understand how it works. “There are of course theoretical models out there, but some of their key predictions ....

Sina Hashemizadeh , Alain Herzog , Emad Oveisi , Dragan Damjanovic , School Of Engineering , Nature Communications , Interdisciplinary Center , Group For Ferroelectrics , Functional Oxides , Electron Microscopy , Titan Themis , Electric Car , அலன் ஹெர்சாக் , பள்ளி ஆஃப் பொறியியல் , இயற்கை தகவல்தொடர்புகள் , இடைநிலை மையம் , எதிர் மின்னணு நுண்ணோக்கி , டைட்டன் தீமிஸ் ,

Skoltech imaging resources used in international experiment with new photocatalysts

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Skoltech researchers helped their colleagues from Japan, Germany, the United States, and China study the crystal structure and optical properties of a new class of two-dimensional compounds, which can be used as effective visible-light-responsive photocatalysts for energy and chemical conversion. They used the Advanced Imaging Core Facility equipment for imaging and structural analysis. The paper was published in the
Journal of the American Chemical Society.
One potential use of photocatalysts, so-called water splitting can help substitute climate-warming fossil fuels with more environmentally friendly hydrogen. For this process to work on a large scale, engineers need better-designed catalysts that can utilize the solar spectrum effectively. ....

United States , Yaroslava Shakhova , Maria Kirsanova , Technology Artem Abakumov , Neutron Research , Kyoto University , Hoffmann Institute Of Advanced Materials , National Institute Of Standards , Aachen University , Osaka University , Journal Of The American Chemical Society , Energy Science , Advanced Imaging Core Facility , American Chemical , Advanced Imaging Core Facility Maria Kirsanova , Titan Themis , National Institute , Hoffmann Institute , Advanced Materials , Shenzhen Polytechnic , ஒன்றுபட்டது மாநிலங்களில் , நியூட்ரான் ஆராய்ச்சி , கியோட்டோ பல்கலைக்கழகம் , தேசிய நிறுவனம் ஆஃப் தரநிலைகள் , ஆச்சென் பல்கலைக்கழகம் , ஒசகக பல்கலைக்கழகம் ,