工学院专题学术讲座 | Shuai Ning 宁帅：褐铁矿基氧化物薄膜和纳米复合材料中物性的动态调控Dynamic tuning of physical functionalities in brownmillerite-based oxide thin films and nanocomposites

新闻与活动活动信息

时间

2024年11月25日（周一）
14:00-15:30

地点

西湖大学云谷校区E10-205

主持

西湖大学工学院陆启阳博士

受众

全体师生

分类

学术与研究

时间：2024年11月25日（周一） 14:00-15:30

Time:14:00-15:30, Monday, November 25, 2024

地点：西湖大学云谷校区E10-205

Venue:E10-205, Yungu Campus

主持人: 西湖大学工学院陆启阳博士

Host:Dr. Qiyang Lu, Assistant Professor, Westlake University

语言：中文

Language:Chinese

主讲嘉宾/Speaker：

Prof. Shuai Ning 宁帅

School of Materials Science and Engineering

Nankai University

主讲人简介/Biography:

宁帅博士，南开大学材料学院特聘研究员，博士生导师，南开大学百名青年学科带头人。毕业于清华大学材料科学与工程专业（2012本、2017博），师从张政军教授。2017至2021年，在美国麻省理工学院（MIT）材料系Caroline A. Ross教授课题组从事博士后研究。2021年2月入职南开大学材料学院。研究兴趣包括新型逻辑/存储材料与器件（铁电/磁性/自旋电子学/多铁等）、功能薄膜及自组装纳米复合结构薄膜材料、功能材料的离子调控等。在Nat Commun, Adv Mater, Adv Funct Mater, ACS Nano等国际权威期刊上发表学术论文40余篇。目前主持国家自然科学基金项目2项，参与国家重点研发计划项目2项，入选中国科协青年人才托举工程。

讲座摘要/Abstract:

Complex oxide thin films and nanocomposites have great flexibility and diversity in structure and composition. Through electrolyte gating, it is promising to incorporate these materials into field effect devices to realize voltage-driven dynamic control of physical and chemical properties for new functionalities. As a model brownmillerite oxide, SrCoO2.5 (SCO) exhibits a fascinating evolution in its crystalline structure and physical properties upon the intercalation of oxygen or hydrogen ions (O^2-/H⁺) by ionic liquid gating. In this talk, I will present our systematic study on the counterpart SrFeO2.5 (SFO) and their solid solutions SrCo1-xFexO2.5 (SCFO), in which distinct evolutions of structure and physical functionalities are observed, particularly a crucial role of Co/Fe ratio in determining the dynamically tunable magnetic properties upon the intercalation of O^2-/H⁺[ACS Nano 2020, 14, 8949, Adv. Funct. Mater. 2024, 34, 2316608]. Moreover, we integrate SCO with gold (Au) into self-assembled vertically aligned nanocomposites. By changing the dielectric properties of SCO matrix through ionic liquid gating, dynamic control over the localized surface plasmon resonance (LSPR) of Au is achieved [Adv. Funct. Mater. 2024, 2411358.]. These findings would offer insight to the design of multifunctional brownmillerite-based thin films and nanocomposites with dynamic tunability.

讲座联系人/Contact:

朱云云 zhuyunyun@westlake.edu.cn