题  目：表面等离子激元在单分子核酸检测和热电子催化的机理研究  

报告人：李毅 博士

主持人：李向平 研究员

时  间：2018 年 12 月 24 日（周一）10:00-11:00

地  点：B4栋二楼大会议室

报告简介：

        The introduction of plasmonic nanoantennas can provide various possibilities such as highly confined, deep subwavelength optical detection and localized dielectrophoretic control. We proposed and experimentally demonstrated a novel device consisting of a solid-state nanopore integrated with gold nanocavity, supporting both ionic and optical readout. Such devices manifest themselves as Raman fingerprints at the single molecule level, enabling high-resolution direct optical spectroscopy of individual nucleotides.

        Besides, rapid decay of localized surface plasmons via Landau damping in metallic nanostructures creates energetic carriers, which can drive desired nano-reactions for the selective positioning of nanomaterials and the sorting and purification of colloidal nanoparticles. Here we present a super-resolution technique to image, quantify and control the local reactivities where plasmon-induced photodesorption enables sub-diffraction multiplexing and sub-particle interplay. Plasmon-mode engineering allows control of nanoscale reactivity and offers a route to further enhance and manipulate hot- electron driven chemical reactions and energy-conversion and transfer at the nanoscale.

报告人简介：

        李毅博士，2015年毕业于比利时鲁汶大学和校际微电子中心（imec）并取得电气工程专业博士学位，2015-2018年在英国帝国理工学院物理系从事博士后研究工作，目前任德国慕尼黑大学物理系研究学者。研究领域包括纳米孔单分子检测，等离子激元热电子催化以及介电材料的非线性光学等方向，成果发表在Nat. Commun.，Nano Lett.， ACS Nano等期刊共30篇，其中ESI高被引文章3篇。