Dr. Ilya Svetlizky
Sunday, 2nd April 2023 at 14:30 David Wang Auditorium, 3rd floor Dalia Maydan Bldg.
Prof. Yun Liu
Research School of Chemistry, College of Sciences, The Australian National University
Canberra, ACT 2601, Australia
Solid-state functional materials are strong correlation systems that contain extremely rich chemistry and physics. Properties and functions of materials are determined by the defect, structure and their evolution on every relevant time, length, field and energy scale. A comprehensive understanding of the chemical and structural complexation of materials has therefore become critical in the material study. In this talk, I will first present several case-studies to show you (1) how the local structure and local chemistry of materials determine their property, and (2) how the alien atom stays in materials and how they locally alter surrounding chemical environment as well as material properties. Based on the sufficient understanding of chemical composition, defect, structure and property of existing materials, a new chemistry strategy is then proposed for the design and development of new materials, such as colossal permittivity materials, highly efficient visible light catalysts and new bulk photovoltaic materials. It will become even critical when machine learning and artificial intelligent (Al) are employed for materials design, and when nanoferroelectric materials are studied.