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Research Abstracts Online
January 2008 - March 2009

University of Minnesota Twin Cities
Institute of Technology
Department of Chemical Engineering and Materials Science

PI: David J. Norris

Modification of Thermal Emission via Metallic Photonic Crystals

The goal of this project is to study metallic photonic crystals and their ability to modify thermal emission. Photonic crystals are nanostructured solids that are three-dimensionally patterned on an optical length scale. Recent research has indicated that this structure can alter the "glow” from a heated metallic photonic crystal. This may allow the elimination of unwanted heat from thermal emission sources, such as the tungsten filament in a conventional light bulb. As a light bulb is extremely inefficient due to emission of long wavelength light as heat, the ability to reduce this emission could greatly increase efficiency. Furthermore, these materials may also be useful for obtaining improved thermophotovoltaic fuel cells. This research tries to clarify the underlying physics involved in thermal emission from metallic photonic crystals.

Group Member

Sang Eon Han, Graduate Student