报告时间:12月27日上午8:30
报告地点:玉泉校区永谦活动中心B区1楼报告厅
(一)报告人:西安交通大学何佳清教授
报告题目:Nanostructured Thermoelectrics: Role of Hierarchical Length-Scale Architecture
摘要:The core intellectual challenge in the next generation bulk thermoelectric materials revolves around synthesis and fabrication of hierarchically organized microstructure that does not appreciably compromise the innate high power factor of the chosen thermoelectric matrix systems but significantly reduces lattice thermal conductivity to enhance the overall figure of merit, ZT. An effective emerging strategy involves introducing nanostructures in the bulk thermoelectric materials, wherein there are exciting prospects for understanding and tailoring microstructural elements with due attention to the hierarchical length-scale influence across atomic-, nano- and micro-meter dimensions. We will present this intricate but tractable relationship between various microstructural attributes (point, line and interfacial defects as well as associated elastic and plastic strain) and lattice thermal conductivity in important nanostructured thermoelectric systems based on PbTe and PbSe matrices, including dual-nanostructuring approach. We will emphasize the need for overarching approach for understanding hierarchical length-scale influences enable specific design strategies for the next generation thermoelectric materials.
报告地点:玉泉校区永谦活动中心B区1楼报告厅
(一)报告人:西安交通大学何佳清教授
报告题目:Nanostructured Thermoelectrics: Role of Hierarchical Length-Scale Architecture
摘要:The core intellectual challenge in the next generation bulk thermoelectric materials revolves around synthesis and fabrication of hierarchically organized microstructure that does not appreciably compromise the innate high power factor of the chosen thermoelectric matrix systems but significantly reduces lattice thermal conductivity to enhance the overall figure of merit, ZT. An effective emerging strategy involves introducing nanostructures in the bulk thermoelectric materials, wherein there are exciting prospects for understanding and tailoring microstructural elements with due attention to the hierarchical length-scale influence across atomic-, nano- and micro-meter dimensions. We will present this intricate but tractable relationship between various microstructural attributes (point, line and interfacial defects as well as associated elastic and plastic strain) and lattice thermal conductivity in important nanostructured thermoelectric systems based on PbTe and PbSe matrices, including dual-nanostructuring approach. We will emphasize the need for overarching approach for understanding hierarchical length-scale influences enable specific design strategies for the next generation thermoelectric materials.
(二)报告人:南开大学程方益副教授
报告题目:锰氧化物功能纳米材料
摘要:锰氧化物具有储量高、价格低廉、毒性小、物理和化学性质丰富等优点,在锂电池和空气电池体系中有重要用途。这次论坛上将介绍我们围绕MnO2、Mn2O3等二元锰氧化物和LiMn2O4、LiNi0.5Mn1.5O4、CoxMn3-xO4、CaMn2O4、CaMnO3等复合锰氧化物所获得的研究结果,介绍锰氧化物纳米材料的可控制备以及它们作为锂电池正极材料和空气电池氧还原催化剂的应用性能,讨论电化学性能与组成、结构、形貌等因素之间的关联规律。
报告题目:锰氧化物功能纳米材料
摘要:锰氧化物具有储量高、价格低廉、毒性小、物理和化学性质丰富等优点,在锂电池和空气电池体系中有重要用途。这次论坛上将介绍我们围绕MnO2、Mn2O3等二元锰氧化物和LiMn2O4、LiNi0.5Mn1.5O4、CoxMn3-xO4、CaMn2O4、CaMnO3等复合锰氧化物所获得的研究结果,介绍锰氧化物纳米材料的可控制备以及它们作为锂电池正极材料和空气电池氧还原催化剂的应用性能,讨论电化学性能与组成、结构、形貌等因素之间的关联规律。
(三)报告人:南京大学吴迪教授
报告题目:基于铁电隧穿结构的阻变存储
报告题目:基于铁电隧穿结构的阻变存储
摘要:金属/超薄铁电薄膜/金属隧穿结构中,铁电极化翻转可以调制电子隧穿的势垒,使得隧穿电阻在高低两个阻态中翻转,一般可以获得102量级的电阻开关比。我们介绍一种金属/超薄铁电薄膜/半导体隧穿结构,铁电极化翻转可以同时调制隧穿势垒的高度和宽度,获得大于104的电阻开关比,为非挥发铁电存储提供了一种新的方案。
(四)报告人:华东理工大学李永生教授
报告题目:纳米复合颗粒的可控制备及其生物应用特性研究
报告题目:纳米复合颗粒的可控制备及其生物应用特性研究
摘要:基于两亲性嵌段共聚物与纳米功能颗粒间的共同自组装特性,结合溶胶-凝胶化学,设计了制备系列有机-无机纳米复合颗粒的新路线。通过分别在胶束核内引入Fe3O4纳米颗粒和荧光分子、壳层用有机硅烷进行交联,得到了多种可用于细胞和体内成像的造影剂和荧光成像复合材料;利用复合胶束核内和壳表面的可方便修饰特性,制备了具有超声、光热响应功能的纳米复合颗粒。初步研究表明,这些多功能纳米复合颗粒在荧光与MR成像、药物传输和光热治疗等方面具有良好的应用前景。
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