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演讲嘉宾：美国工程院院士张翔（Xiang Zhang）教授

演讲题目：1: Metamaterials

2: Superlens and Transformation Optics

3: Photonics Beyond Diffraction Limit: Nano-scale Laser, Waveguide and Cavities

讲座时间： 12月5日（周一）下午16:00-17:00

12月6日（周二）下午16:00-17:00

12月9日（周五）下午16:00-17:00

讲座地点：理科2号楼2736报告厅

报告摘要：

Recent theory predicted a new class of photonic composite materials made of engineered sub wavelength entities - meta “atoms” and “molecules” which enable the unprecedented optical properties that do not exist in the nature such as optical magnetism and negative refraction. Especially, the superlens made of metamaterials breaks the fundamental diffraction limit, which may have profound impact in wide range of applications such as nano-scale imaging, nanolithography, and ultra-density data storage.

I’ll discuss a few recent experiments that demonstrated these intriguing physical properties. We created the first bulk optical metamaterials that show the negative refractions. We demonstrated the superlens and optical cloaking using carefully design of plasmonic materials dispersions. The recent discoveries on new topological symmetry such as Mobius symmetry in metamaterials reveals fundamentally new realm of physical properties that do not occur in nature materials. I will further discuss a new technology based on superlens for nano-scale lithography that may transform the next generation of nano-manufacturing, along with plasmon lasers, a coherent light at molecular scale.

嘉宾简介：

Xiang Zhang is the Ernest S. Kuh Chaired Professor at UC Berkeley and the Director of NSF Nano-scale Science and Engineering Center (SINAM). He is a member of US National Academy of Engineering (NAE) and fellow of APS, OSA, AAAS and SPIE. He has authored more than 180 publications including ones in Science, Nature and Physical Review Letters. His group’s research in optical metamaterials was selected by Times Magazine as “Top 10 Scientific Discoveries in 2008”. Xiang Zhang was a recipient of NSF CAREER Award; SME Dell K. Allen Outstanding Young Manufacturing Engineer Award, ONR Young Investigator Award and MIT’s Rohsenow Lecturer. He received his Ph.D from UC Berkeley in 1996 and taught at Penn State, and UCLA prior joining the Berkeley faculty in 2004.

张翔教授是美国加州大学伯克利分校（UC Berkeley）Ernest S. Kuh讲席教授、美国国家纳米科学与工程研究中心主任、美国国家工程院院士；是美国物理协会、美国光学协会、美国前沿科学协会和国际光学工程协会会士。

张教授已在包括Science、 Nature及Physical Review Letters等世界顶级期刊发表文章180余篇。他的研究课题光学超材料被时代杂志评为“2008年十大科学发现”。 Zhang教授曾获得美国国家科学基金事业奖、国际制造工艺协会 Dell K. Allen杰出青年工程师奖、美国海军研究部青年研究者奖以及美国麻省理工学院的Rohsenow Lecturer。他于1996年获得加州大学伯克利分校博士学位，随后分别在宾夕法尼亚州立大学(Penn State)、加州大学洛杉矶分校（UCLA）任教，2004年起在加州大学伯克利分校任职。