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Validating surface evolution modeling on high temperature selective emitters : an investigation of the thermal stability of nano-scale surface structures for thermophotovoltaic systems

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dc.contributor.advisor Sang-Gook Kim. en_US
dc.contributor.author Kim, Sun K., S.B. Massachusetts Institute of Technology en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US
dc.date.accessioned 2012-02-29T18:22:52Z
dc.date.available 2012-02-29T18:22:52Z
dc.date.issued 2011 en_US
dc.identifier.uri http://hdl.handle.net/1721.1/69515
dc.description Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, June 2011. en_US
dc.description "June 2011." Cataloged from PDF version of thesis. en_US
dc.description Includes bibliographical references (p. 51-52). en_US
dc.description.abstract As the world's traditional energy sources come under scrutiny due to dwindling supply and negative environmental impact, a global effort is being made into alternative energy systems. One such system involves the use of thermophotovoltaics (TPV), which convert thermal energy to electricity. Nano-patterned features can im prove electromagnetic emission from the TPV emitter, increasing system efficiency. These features, however, degrade at high temperatures over tine. One of the main contributors to surface evolution is surface diffusion. This investigation tested surface diffusion based simulation modeling, comparing computational results with experimental findings for high temperature annealed silicon, a cost effective material for testing instead of tungsten. Although the simulation model fits within 25% of the post-annealed curvature caused by surface diffusion, discrepancies in the simulation's time scale need to be addressed in future models for accurate time dependent modeling. en_US
dc.description.statementofresponsibility by Sun K. Kim. en_US
dc.format.extent 52 p. en_US
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri http://dspace.mit.edu/handle/1721.1/7582 en_US
dc.subject Mechanical Engineering. en_US
dc.title Validating surface evolution modeling on high temperature selective emitters : an investigation of the thermal stability of nano-scale surface structures for thermophotovoltaic systems en_US
dc.title.alternative Investigation of the thermal stability of nano-scale surface structures for thermophotovoltaic systems en_US
dc.type Thesis en_US
dc.description.degree S.B. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US
dc.identifier.oclc 775781009 en_US


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