Towards Optical NanoCircuits: Strong Light-Matter Interaction for Novel Biosensors, Photon Detectors, and Solar Cells
May 29, 2012
from 10:30 AM to 12:00 PM
|Where||ENGR. IV Bldg. Shannon Room 54-134|
|Contact Name||Prof. Bahram Jalali|
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Bio-inspired Sensors and Optoelectronics Lab
EECS Department, Northwestern University
Relatively weak interaction of photons with matter makes light such an amazing carrier of both energy and information. It carries images from the edges of our Universe to us almost untouched - and as far as we know – faster than anything else. Similarly, the radio wave photons generated within our body in an MRI system pass through our body almost completely unabsorbed to reveal wonderful images of our organs and their functions. However, such weak interaction is also the main source of several inherent limitations in major fields. Examples include, efficiency limitation in solar cells, sensing limitation of photonic biosensors, and the sensitivity/resolution of photon detectors (cameras).
In this talk I will describe recent efforts in enhancing light-matter interaction by introducing antenna and other circuit-like elements that operate well up to several hundreds of Tera Hertz, or visible light frequency. To achieve such speeds, these elements are usually very small, and require advanced nano-processing.
In particular, I present a new generation of integrated nanodevices made in my group to enhance light-matter interaction by many orders of magnitude to achieve extremely high chemical sensing, record infrared/THz photon detection sensitivity, and record opto-mechanical modulation efficiency.
Hooman Mohseni received his Ph.D. degree in Electrical Engineering from Northwestern University. He joined Sarnoff Corporation in 2001, where he was a technology leader for several government, domestic, and international commercial projects. He joined Northwestern University in 2004 as a faculty member. He is a recipient of National Science Foundation’s CAREER Award in 2006, and Young Faculty Award from Defense Advanced Project Agency (DARPA) in 2007. He was selected by NSF as a US delegates in US-Japan Young Scientist Exchange Program on Nanotechnology in 2006, and US-Korea Nano-manufacturing Exchange program in 2007. He has served as the Advisory Board, Program Chair and Co-chair in several major conferences including IEEE Photonics, SPIE Optics and Photonics, and SPIE Security and Defense. Dr. Mohseni has published over 110 peer-reviewed articles, and holds 13 issued US and International patents on novel optoelectronic devices and nanoprocessing. He has presented more than 42 invited and keynote talks at different commercial, government, and educational institutes. He is an SPIE Fellow, and IEEE Senior Member.