报告题目：Tailoring Artificial Plasmonic Nanostructures to Visible-Near IR Regime: Towards Versatile and Ultrasensitive Plasmonic Biosensors

报告人：熊启华教授（南洋理工大学）

报告时间：2017年12月1日（星期五）下午15：30

报告地点：大学城校区B4-308会议室

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报告摘要：

By intelligent design and tuning of the fundamental unit (bow-tie antenna, split-ring resonator or nanorod arrays) and arrangement, such, we were able to push the Ag- or Au-based “metamaterials” to resonant at visible-near infrared frequency regime, on either opaque and rigid substrates like silicon or glass or transparent plastic substrates. We will also show that such photonic devices provide unconventional advantages in ultrasensitive detection of chemical and biological species, based upon both the frequency shift of the resonance due to local effective refractive index change and the surface enhanced Raman spectroscopy signal, which carries the molecular fingerprint information. A wide range of analytes can be detected, such as DNA molecules, cancer markers, food and drink contaminants (plasticizers and melamines), and heavy metal ions. Our works suggest the extremely bright future of top-down metamaterials towards plasmonic sensing platform that implement the conventional colloidal particle approaches, which exhibit considerable promise in a wide range of applications in chem-/biological sensing and environmental pollution detections etc.

报告人简介：

熊启华教授，其主要研究领域是以稳态和瞬态光谱学为主要实验手段，以光和物质相互作用为研究主题, 着重研究低维半导体纳米材料基于光子-声子-电子耦合作用的物理机制和量子调控。在纳米光学，纳米等离子体学，激光制冷，以及二维半导体材料光学性质等一系列前沿课题做出了一系列有影响的工作。在《自然》及子刊, 《纳米通讯》，《先进材料》等一系列国际知名杂志上发表了170多篇文章，并被世界知名杂志及大众媒体所报道，总引用次数超过6500余次，H-因子48。其出色的研究获得了一些奖励和认可，比如新加坡物理学会纳米科技奖（2015），新加坡国立研究基金NRF Investigatorship奖（2014），和南洋理工大学南洋研究卓越奖（2014）等.