报告题目：自组装氧化物薄膜：从设计到应用

报告人：杨浩, 南京航空航天大学

时间：2023年11月24日(周五） 10：30

地点：物理系B315

Abstract: Self-assembly has been approved to be a useful method to fabricate oxide thin films with a rich variety of periodic nanoscale patterns. Recent efforts have been focused on how to make the self-assembly controllable. In a film-on-substrate geometry, epitaxial composite films can be divided into two forms: horizontal and vertical. Success of the investigation critically replies on obtain and manipulation of these two architectures. In the present work, horizontally and vertically aligned nanostructures have been obtained in (YBa2Cu3O7-δ)0.5:(BaZrO3)0.5 and (BiFeO3)0.5:(Sm2O3)0.5 thin films respectively. And the manipulation between the vertical and horizontal architectures has been realized in (YBa2Cu3O7-δ)1-x:(BaZrO3)x systems by simply changing the composition of BaZrO3, which resulted from interplay between surface effect and bulk phase separation. More than these, (BaTiO3)0.5:(Sm2O3)0.5 thin films have been fabricated on flexible Mica substrates and used for structural health monitoring of aircrafts. As determined from both experiment and simulation, flexible BaTiO3:Sm2O3 films are demonstrated as an ultrasonic sensor with high sensitivity to be bonded on the curved aluminum plate for damage monitoring based on Lamb wave. More details will be presented in the talk.

Bio: 杨浩，南京航空航天大学物理学院教授、空天信息材料与物理工信部重点实验室副主任。2000年毕业于武汉大学物理系，获学士学位。同年进入中国科学院物理研究所攻读博士，2005年毕业并获理学博士学位。2006年2月至2009年7月先后作为Director’s Postdoctoral Fellow和助理研究员在美国Los Alamos国家实验室工作。2009年8月至2015年4月在苏州大学物理科学与技术学院工作，2015年5月加入南京航空航天大学物理学院。主要从事人工结构氧化物薄膜和铁电、压电以及多铁性薄膜的研究。已在Adv. Mater., Nat. Mater., PRL, Nat. Commun.,等国际期刊发表论文140余篇。作为课题负责人，主持国家自然科学基金委重大研究计划、联合基金等项目。