Time: 11:00am - 12:00pm
Dr. Hongsheng Chen, Professor in the Electromagnetics Academy at Zhejiang University in Hangzhou, Zhejiang, China
Abstract: The technology of invisibility has undergone a dramatic transition from pure imagination into scientific realm in recent years. However, the design of the cloak involves extreme values of material properties and spatially dependent parameter tensors, which are very difficult to implement. Here, I will discuss some strategies to reduce the complexity of the invisibility cloaks and some possible solutions for future practical implementations of invisibility cloaking devices at large scales in free space. In particular, the bandwidth limitation and the polarization sensitivity of the cloaks will be addressed.
Biography: Dr. Hongsheng Chen is a full professor in the Electromagnetics Academy at Zhejiang University in Hangzhou, Zhejiang, China. He received the B.S. degree in 2000, and Ph.D. degree in 2005, from Zhejiang University, both in electrical engineering. In Oct. 2005, he joined the faculty of Zhejiang University, China. From Feb. 2006 to Dec. 2008, he was a Visiting Scientist with the Research Laboratory of Electronics at Massachusetts Institute of Technology, Cambridge, USA. Currently he is a full Professor at Zhejiang University. His current research interests are in the areas of metamaterials, antennas, invisibility cloaking, transformation optics, and theoretical and numerical methods of electromagnetics. He is the co-author of about 90 international refereed journal papers. He serves as a regular reviewer of many international journals on electromagnetics, physics, optics, and electrical engineering. He serves on the Editorial Board of the Nature’s Scientific Reports, Progress in Electromagnetics Research, and Journal of Electromagnetic Waves and Applications. Dr. Chen was a recipient of National Excellent Doctoral Dissertation Award in China, the 2006 first-class China Postdoctoral Science of Foundation, the 2008 Zhejiang Provincial Outstanding Youth Foundation, and the 2012 National Youth Top-notch Talent Support Program in China. His research work on cloaking was selected in the Science Development Report as one of the representative achievements of Chinese Scientists in 2007.
Location: Eng 2.07