题目：Co-existence of opposite elements in one system at nanoscale leads to breakthroughs

报告人：Prof. Shi Xue Dou

单位：Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong

时间：9月16日（周一）10:15-11:45

地点：李薰楼468室

Abstract:

In this talk, I tend to show that very special properties or new discoveries are generated via capability to manage two completely opposite elements or phenomenon to co-exist at small scale in one system. These can be exampled from a wide range of scientific problems. Superconductivity and magnetism are antagonistic phenomena but when these are manipulated to co-exist at lattice scale a very strong pinning force is resulted to pin the magnetic fluxes, leading to high field performance of the superconductor for applications. Co-existence of carbon modified surface and untouched interior at nanoscale leads to a breakthrough in high field critical current density of MgB2 superconductors. Co-existence of phonon glass and electron crystal in thermoelectric materials achieved by multi-scale scattering resulted in an ideal state for increasing figure of merit to effectively covert waste heat to electricity. Combination of active and inactive materials in energy storage system is the best strategy to ensure the electrochemical reactivity and structural integrity. A coexistence of body insulator and surface gapless conductor has led to the discovery of a completely new class of material: topological insulator with extraordinary properties. Coexistence of spin quantum liquid and crystalline solid in one system leads to the discovery of third kind of magnetism which is very significant to understand high temperature superconductivity and application of data storage.

Shi Xue Dou, Professor, Director, PhD, DSc, FTSE
Institute for Superconducting and Electronic Materials,
Australian Institute of Innovative Materials
University of Wollongong, Squires Way, Northwollongong, NSW, Australia
Tel: 61 2 4221 4558; Fax: 61 2 42215731, E-mail: shi_dou@uow.edu.au

Biography

Shi Xue Dou is Professor and Director of the Institute for Superconducting and Electronic Materials (ISEM) at UOW. He received his PhD in chemistry in 1984 at Dalhousie University, Canada. He was elected as a Fellow of the Australian Academy of Technological Science and Engineering in 1994. He was awarded a DSc by the University of New South Wales in 1998, three Australian Professorial Fellowship by Australian Research Council through 1993 to 2012, the Australian Government’s Centenary Medal in 2003, Vice-Chancellors Senior Excellence Award in 2008, Vice-Chancellor Outstanding Partnership Award in 2012. His publications attracted 14000 citations with a h-index >52. He has led more than 50 ARC competitive projects as a lead chief investigator. He is specialized in energy and superconductor materials. He is program leader for Automotive CRC 2020. He has supervised 65 PhD students and more than 50 postdoctoral and visiting fellows who are widely spread across five continents. They have made significant contributions in their fields and established themselves as research leaders on their own right.