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【周惠久论坛】 邀请讲座人: 杨士宽

2017-02-22 17:27:40| 发布者:高圆  

邀请讲座人:杨士宽

简介:杨士宽博士入选2015年青年千人计划,随后加入浙江大学材料科学与工程学院,受聘为正高级职称研究员,博士生导师。杨士宽博士2009年毕业于中国科学院合肥物质科学研究院,后在德国明斯特大学(2009-2011)及美国宾夕法尼亚州立大学(2011-2016)从事博士后研究工作。杨士宽博士课题组的主要研究方向包括:微纳米阵列的可控合成,表面增强拉曼散射等光学检测器件,光子晶体及等离子体光学,电化学合成与电催化,量子点及LED等光电器件,仿生学等。杨士宽博士迄今为止已发表50余篇学术论文,其中第一作者/通讯作者论文30余篇,包括材料类知名杂志PNAS(第一/通讯), Adv. Mater. 等,其中发表在PNAS上的论文被数十家国际知名媒体报道,包括ScienceDaily, KurzweiAl, 美国NSF等,所发表论文被引用2500余次,h因子为25。

【报告题目】Ultrasensitive SERS Detection in Common Fluids on Bioinspired Slippery Surfaces

时间:  10:10-11:30 am, Feb. 24th, 2017

地点新材料大楼材料学院第一会议室

摘要

Detecting target analytes with high specificity and sensitivity in any fluid is of fundamental importance to analytical science and technology. Surface-enhanced Raman scattering (SERS) has proven to be capable of detecting single molecules with high specificity but achieving single molecule sensitivity in any highly diluted solutions remains a challenge. Here we demonstrate a universal platform that allows for the enrichment and delivery of analytes into the SERS-sensitive sites in both aqueous and non-aqueous fluids, and its subsequent SERS detection down to the attomolar level (10-18 mol l-1). These levels of detection represent at least five orders of magnitude improvement in non-aqueous solutions and an order of magnitude improvement in aqueous solutions compared to those of state-of-the-art SERS detection methods. The platform is based on a pinning-free, bio-inspired omniphobic slippery substrate, which enables the complete concentration of analytes and SERS substrates within an evaporating liquid droplet. Our method allows for ultra-sensitive airborne and molecular detections in a broad range of common fluids for applications related to analytical chemistry, molecular diagnostics, environmental monitoring, and national security.

新学期新气象,材料学人从未离开,上下求索的科研征程,怎能没有你?

讲座可盖章!