报告题目：Play phonons by phontons: Raman scattering, Laser cooling, and Biosensing

报告人：张俊 中国科学院半导体研究所 研究员

报告时间：2015年9月24日上午10:00点

报告地点：西大永利官网三层报告厅

报告人简介：

    张俊，男，1980年4月出生，工学博士，研究员，博士生导师， 主要从事低维量子材料中光与物质相互作用的实验研究，包括凝聚相材料中的激光制冷，基于声子的固态量子调控，新奇低维量子结构的合成、表征和光电性质，光学超常材料（Metamaterials）的新奇光学性质和单分子光谱检测等。已在国际学术期刊上发表学术论文46篇，其中在影响因子大于6的杂志上发表文章27篇，其中包括1篇《Nature》（封面）、7篇《Nano Letters》、7篇《ACS Nano》、1篇《Advance Materials》； 撰写英文专著1章；授权专利4项。张俊博士多次受邀在国际学术会议上做邀请报告和担任专题主席，是多个国际期刊的审稿人。他的研究工作被《Nature Photonics 7, 348–349 (2013)》、《Nature Photonics 7, 262 (2013)》、《NPG Asia Materials》、《Materials Views China》、《Nanowerk》、《IOP PhysicsWorld》、《Phys Org》、《海峡时报 The Straits Times》、《联合早报》、《科技日报》、德国之声、印度百年报纸《The State Man》以及国内外网络媒体报道多次。

报告简介：

 Here I will report the interaction of light with maters, especially with phonons. I will show three examples including: 1) Raman scattering in 2D layer materials. I will show how to use Raman scattering to detect the phonon vibration in 2D materials from bulk to monolayer scale such as interlayer and intralyer vibration in topological insulator、graphene and non-graphene 2D crystals. 2) Laser cooling in semiconductors, i.e. how to use photon to remove the heat (phonon) from materials. By using of strong coupling between excitons and longitudinal optical phonons (LOPs), we not only can cool the whole semiconductor sample from room temperature by 40 Kelvin, but also can selectively cool one specific LO phonon down to quantum ground state. 3) Plasmonic based biosensing. In this part I will show how to use surface enhanced Raman spectroscopy to sensitively detect bio-molecules. It includes our several recent achievements in the development of LSPR nanosensors based on colorimetry, single and arrayed nanoparticle spectroscopy for the detections of several cancer biomarkers.

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