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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 ,