Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same

dc.contributor.author Lee, Jae-Hwang
dc.contributor.author Constant, Kristen
dc.contributor.author Ho, Kai-Ming
dc.contributor.author Constant, Kristen
dc.contributor.department Iowa State University Research Foundation, Inc.
dc.date 2018-02-18T18:16:33.000
dc.date.accessioned 2020-06-30T06:15:58Z
dc.date.available 2020-06-30T06:15:58Z
dc.date.embargo 2017-07-28
dc.date.issued 2016-07-26
dc.description.abstract <p>Metallic thermal emitters consisting of two layers of differently structured nickel gratings on a homogeneous nickel layer are fabricated by soft lithography and studied for polarized thermal radiation. A thermal emitter in combination with a sub-wavelength grating shows a high extinction ratio, with a maximum value close to 5, in a wide mid-infrared range from 3.2 to 7.8 μm, as well as high emissivity up to 0.65 at a wavelength of 3.7 μm. All measurements show good agreement with theoretical predictions. Numerical simulations reveal that a high electric field exists within the localized air space surrounded by the gratings and the intensified electric-field is only observed for the polarizations perpendicular to the top sub-wavelength grating. This result suggests how the emissivity of a metal can be selectively enhanced at a certain range of wavelengths for a given polarization.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/patents/327/
dc.identifier.articleid 1328
dc.identifier.contextkey 10502708
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath patents/327
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/56709
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/patents/327/0-2016_Constant_MetallicLayer_PatentApplication.pdf|||Fri Jan 14 23:36:39 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/patents/327/2016_Constant_MetallicLayer_Patent.pdf|||Fri Jan 14 23:36:40 UTC 2022
dc.subject.disciplines Engineering Physics
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Metallurgy
dc.supplemental.bitstream 2016_Constant_MetallicLayer_PatentApplication.pdf
dc.title Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same
dc.type article
dc.type.genre patent
dspace.entity.type Publication
relation.isAuthorOfPublication 7338e062-cdea-43aa-b473-579d3fdc109e
relation.isOrgUnitOfPublication 0b21e0ba-edf0-4137-9d16-53da01b11c6e
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