Surface-Enhanced Infrared Absorption Gas Sensing Incorporating Advanced Plasmonic Nanostructures and Nano-Composite Materials Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/47429f79q

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  • This dissertation focuses on extending the application scope of surface enhanced infrared absorption spectroscopy to gas sensing. The method we propose is incorporating plasmonic nanostructures with nano-composite material, metalorganic framework, which can selectively preconcentrate certain gas molecules into the nanopores. The preconcentrating property is first demonstrated by applyingmetal-organic framework to optical fiber based sensor. Then two different metalorganicframework integrated surface enhanced infrared absorption gas sensorsfabricated on bulk substrate and nano-membrane are investigated, and the highenhancement factors demonstrated for the first time. Lastly, an on-chip spectrometer using high resolution plasmonic filter array is proposed and experimentally demonstrated for resolving CO2 absorption spectrum at 2.0 μm with 10 ~ 12 nm resolution. This filter array spectrometer is simple and low-cost, which can be potentially used for portable gas spectroscopy system.
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  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2017-06-19T17:02:23Z (GMT) No. of bitstreams: 1Xinyuan_v04.pdf: 2934003 bytes, checksum: cbd021cc3b314a0bb0e2a45a3c2b5a7f (MD5)
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  • description.provenance : Approved for entry into archive by Steven Van Tuyl(steve.vantuyl@oregonstate.edu) on 2017-06-26T23:00:54Z (GMT) No. of bitstreams: 1Xinyuan_v04.pdf: 2934003 bytes, checksum: cbd021cc3b314a0bb0e2a45a3c2b5a7f (MD5)

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