MSE Seminar - Hou-tong Chen - Los Alamos National Laboratory

MSE Seminar
Event Date:
Monday, September 8, 2014 - 4:00pm to 5:00pm
Location:
Boggs B6

Title:  Emergent Electromagnetic Functionalities in Metamaterials
for Terahertz Applications

Affiliation:  Center for Integrated Nanotechnologies, Los Alamos National Laboratory,
Los Alamos, NM 87545

When:  September 8, 2014 @ 4:00PM (Refreshments in Lobby @ 3:30pm)

Where:  BOGGS B6

Host:  Dr. Wenshan Cai

 Abstract: The control of electromagnetic radiation lies at the core of many modern technologies. Naturally occurring materials provide only limited electromagnetic response, insufficient for emerging technologies with increasingly demanding requirements. During the past decade metamaterials have been developed to demonstrate many exotic phenomena that are otherwise difficult or impossible to realize. In this talk, I will introduce the concept and principle of metamaterials for accomplishing a host of functionalities that are closely related to real world applications. Particular focus will be our recent series of works in the development of ultrathin, few-layer planar metamaterials that can realize antireflection, perfect absorption, polarization conversion, and arbitrary wavefront shaping, with significant advantages over the traditional methods. Integration of functional materials into metamaterials enables active functionalities such as electromagnetic signal modulation and resonance frequency tuning. The discussed works are mainly in the terahertz frequency range where metamaterials and metasurfaces can make major contribution in solving the material issues that have prevented the development of terahertz science and technology for many years.     

Biography: Hou-Tong Chen received his B.S. and M.S. degrees from the University of Science and Technology of China in 1997 and 2000, respectively, and Ph.D degree from Rensselaer Polytechnic Institute in 2004, all in physics. Between 05/2005 and 05/2008, he was a postdoctoral research associate in Los Alamos National Laboratory (LANL). Since 06/2008, he has been a technical staff member in the Center for Integrated Nanotechnologies (CINT) at LANL, a Department of Energy/Office of Science Nanoscale Science Research Center (NSRC) jointly operated by Los Alamos and Sandia National Laboratories as a national user facility. His research interests are in metamaterials, terahertz science and technology, and ultrafast nanophotonics. Currently he is the principle investigator (PI) of a multi-million dollar project focusing on the development of meso-photonics materials, in addition to establishing CINT capability in metamaterials and ultrafast spectroscopy serving CINT Users. He has co-authored over 50 publications in peer reviewed journals including Science and Nature, which have been cited totally over 2500 times according to ISI Web of Science. He has delivered over 50 invited presentations in international conferences as well as colloquia and seminars in research institutions. He received LANL Achievement Awards in 2007 and 2013. He has been serving as a member of the Editorial Committee in Scientific Reports, International Journal of Terahertz Science and Technology and Frontiers of Optoelectronics. He also served many conferences and workshops in the organizing committee, advisory committee, or technical program committee.

Reception at 3:30 preceeding seminar outside Boggs B6