报告题目：Disordered photonics inspired by nature evolution

报告人：英国伯明翰大学刘昶旭研究员

报告时间：2018年10月9日（周二）上午9:00

报告地点：子良A220会议室

邀请人：金属材料与表面工程研究所 胡晓君 教授

报告人简介：刘昶旭，伯明翰大学（University of Birmingham）物理与天文系研究员（Research Fellow）。2008于同济大学获得学士学位（上海市优秀毕业生）。2010于美国罗彻斯特大学获得硕士学位。2016于沙特阿卜杜拉国王科技大学获得博士学位。研究兴趣包括纳米光学(nanophotonics)，无序光学(disordered photonics)，超材料(metamaterials)与表面等离子激元光子学(plasmonics)。以第一作者身份在Nature Nanotechnology, Nature Photonics, Nature Physics, Physical Review X, Physical Review Letters 等期刊发表论文。主要工作被选为Nature Photonics, Nature Physics封面，并于Nature Nanotechnology受邀采访（In the Classroom）。 纳米粒子黑体工作于2016年被吉尼斯世界纪录认证为最黑的人工材料。相关研究多次被世界主流媒体报告，其中包括华尔街日报，每日邮报，独立报、雅虎新闻等。

报告内容简述：Chaos is complex dynamics with exponential sensitivity to the initial conditions. Since the study of three-body problem by Henri Poincare, chaos has been extensively studied in many systems, ranging from electronics to fluids, brains and more recently photonics. Chaos is a ubiquitous phenomenon in Nature, from the gigantic oceanic waves to the disordered scales of white beetles at nanoscale. The presence of chaos is often unwanted in applications, as it introduces unpredictability, which makes it difficult to predict or explain experimental results. Inspired by how chaos permeates the natural world, this thesis investigates on how the interaction between light and chaotic structure can enhance the performance of photonics devices. With a proper design of the lighter-mater interaction in chaotic resonators, I illustrate how chaos can be used to enhance the ability of an optical cavity to store electromagnetic energy, realize a blackbody system composed of gold nanoparticles, localize light beyond the diffraction limit.