Date: Thursday, Dec 18, 2014
Time: 10:00 am
Venue: Room F210, School of Mechanical Engineering
Speaker: Dr. Zhuomin Zhang, Professor
                 George W. Woodruff School of Mechanical Engineering
                 Georgia Institute of Technology, Atlanta, GA, USA

Abstract
The spectral and directional control of radiative properties by engineered micro/nanostructures has enormous applications in photonics, microelectronics, and energy conversion systems.Plasmonic metamaterials have attracted extensive attention due to their diversity and tenability in controlling electromagnetic waves. Graphene is a two-dimensional monatomic layer of carbon material with promising applications because of its unique electronic and optical properties. This presentation summarizes some of our recent studies on tailoring the spectral radiative properties using periodic gratings and metamaterial structures. The effects of surface plasmon polaritons (SPPs) and magnetic polaritons (MPs) on controlling the radiative properties will be demonstrated. Both polarization dependent and independent metamaterial structureshave been investigated and the underlying mechanisms will be elucidated. A simple method of determining the polarization-dependent radiative properties of general anisotropic periodically structured metamaterials will be discussed. The role of graphene-coupled polariton absorption in plasmonic metamaterials will also be addressed.

Biographic Sketch
Dr. Zhuomin Zhang is a professor in mechanical engineering at Georgia Tech. He received his B.S. and M.S. from the University of Science and Technology of China (USTC) and a Ph.D. degree from MIT. He has previously held positions at University of Florida and NIST. Professor Zhang’s research interests are in thermal radiation for energy conversion and temperature measurement for semiconductor manufacturing. He has written a book on Nano/Microscale Heat Transfer, co-authored over 150 journal papers, and given over 300 invited and contributed presentations. Heis a Fellow of ASME and the American Association for the Advancement of Science (AAAS). Professor Zhang has been the Chair of several committees in ASME’s Heat Transfer Division, including the Committee on Low Temperature Heat Transfer, the Committee on Thermophysical Properties, and the founding Chair of the Committee on Nanoscale Thermal Transport. He currently serves as an associate editor of the Journal of Heat Transfer, Journal of Quantitative Spectroscopy & Radiative Transfer, and International Journal of Thermophysics.He was the Program Chair of the ASME 3rd Micro/Nanoscale Heat & Mass Transfer International Conference (Atlanta, March 2012) and Chair of the 2nd International Workshop on Nano-Micro Thermal Radiation (Shanghai, June 2014).In 1999, Professor Zhang won the Presidential Early Career Award for Scientists and Engineers (PECASE) and an NSF CAREER Award. He has also won the 2000 ASME Heat Transfer Division Best Paper Award and the 2005 AIAA Thermophysics Best Paper Award.

Sponsored by Center for Microfluidics and Thermal Control
School of Mechanical Engineering
Shanghai Jiaotong University