——2012-2013年度今日物理讲座第四期

 

   

Plasmonics, Metamaterials and Their Applications in Active and Passive Light Manipulations

 

讲座时间：11月13日（Tue）19:00-20:30

讲座地点：三教301

讲座人：  刘照伟  [Assistant Professor/ Dept of Electrical & Computer Engineering/ Materials Science and Engineering Program/ University of California, San Diego (UCSD)]

讲座摘要：

Plasmonic and metamaterials have introduced tremendous research interest within last decade and has become an increasingly important field in nanophotonics. The extraordinary optical properties of plasmonic structures and metamaterials have opened up a variety of novel applications such as super resolution imaging, deep-subwavelength waveguides, ultrasensitive sensors and etc.

In this talk he will:

1.     Review some of their work on active and passive control of light by using plasmonics and metamaterials. Plasmonics and metamaterials based microscopy technique, represents a unique approach for high speed super resolution optical imaging.

2.    Present there recent experimental results with resolution improvement factor ~3 compared to that of conventional microscope. Metalens, comprising metal-insulator-metal waveguides, are designed to perform super resolution focusing and Fourier transform. Such lens can also act as “Janus lens” to break the forward backward imaging symmetry and the detailed imaging characteristics will be discussed.

3.    Introduce an integrated plasmonic OLED structure for super contrast biomedical imaging.

4.    Other topics: such as plasmonic enhanced high efficiency high speed LEDs, super resolution optical lithography, plasmonic sensing, and solar-thermal energy will be briefly discussed.

讲座人简介：

Zhaowei Liu is an Assistant Professor in the Electrical and Computer Engineering Department at UCSD. He received his Ph.D. in Mechanical and Aerospace Engineering (MEMS/Nanotechnology) from UCLA in 2006, and was subsequently a postdoctoral researcher in NSF Nanoscale Science & Engineering Center (NSEC) and Mechanical Engineering at UC Berkeley. In 2008 he joined the faculty at UCSD. His research is primarily in the fields of nanophotonics, super-resolution imaging and sensing, metamaterials, plasmonics, and micro/nanofabrication. His work on optical hyperlens was selected to the Discovery Magazine’s top 100 science stories in 2007. The first experimental demonstration on negative refraction at visible light frequency was selected to the Time Magazine’s top 10 scientific discoveries in 2008. He is a recipient of the 2010 Richard E. Morley SME Outstanding Young Manufacturing Engineer Award, UCSD 2010 Hellman Faculty Fellowship Award, and 2010 Kavli Fellow from National Academy of Sciences.