Seoul National Univ. DMSE
Notice

Seminar & Colloquium

Seminar & Colloquium
[세미나: 3월 7일(화), 오전 11시] Prof. Aron Walsh, Imperial College London

[세미나: 3월 7일(화), 오전 11시] Prof. Aron Walsh, Imperial College London

 

Title

Defect-Driven Materials Engineering

 

Speaker

Professor Aron Walsh, Imperial College London

 

Biography

Aron Walsh began his career at Trinity College Dublin (Ireland) where he specialised in the computer simulation of solids. Following a postdoctoral stay at the National Renewable Energy Laboratory (USA), he held a Royal Society University Research Fellowship at the University of Bath (UK), and then joined Imperial College London as the Chair of Materials Design. He was awarded the EU-40 Prize for his work on the theory of solar energy materials and the RSC Corday-Morgan Prize for his contributions to computational chemistry. Aron features in the Highly Cited Researchers list and is Associate Editor for Journal of the American Chemical Society covering energy materials and machine learning.

 

| Date | Tuesday, March 7th, 2023

| Time | 11:00 ~

| Venue | 33동 226호

 

[Abstract]

Crystalline materials can be represented, at the atomic scale, by a unit cell that is translated in three dimensions. Point and extended defects break this translational symmetry with profound consequences that can include wave function localisation, variation in the local structure, and the capture or emission of charge carriers and light. The ability to classify, characterise and control defect processes in crystals is critical for many application areas, from energy technologies to quantum computing. First-principles modelling approaches provide access to a range of important defect quantities including energies, vibrations, and electronic excitations for specific species, but challenges remain to enable quantitative comparison with experimental observables. I will discuss recent progress in the theory and simulation of defects in crystals. This talk will cover the importance of defects in solar cell[1] and solar fuel[2] technologies, as well as our latest work on spontaneous symmetry breaking[3]. Obstacles for the adoption of data-driven defect approaches will be discussed.

 

| Host | 한승우 교수(02-880-1541)