Undergraduate Thesis Or Project

 

Measuring Low Intensity Light Reflections of High Temperature CO₂ Adsorbed on SiO₂ Near Brewster's Angle Public Deposited

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  • This investigation expands on earlier methods of using surface polarization reflection (SPR) to characterize the first few monolayers of a surface. Past research measured intensities of light reflecting off an SiO₂ optical flat inside a vacuum. Pressure of applied gas was changed to view a change in reflection. In an attempt to remove the need of a vacuum chamber, this experiment was run in the open air. P-polarized light is reflected at Brewster's angle to measure low intensity reflections. Using an SBIG 8300 CCD camera intensities are measured in an open air environment and compared to that of applied CO₂ by the use of a gas jet. SPR theory predicts that higher polarizabilities will cause a larger reflection. Temperature of the applied gas was increased in order to quantify a difference in reflections based on this change in temperature. Removing ambient particles from the open air by use of a heated gas stream was thought to change the signal to a more consistent level of measurement. The intensity was found to change at higher temperatures but no trend was quantified. Increasing the temperature beyond 323K caused signal fluctuation and was found not to be beneficial in SPR analysis. SPR was found to not have been improved by heating the applied gas.
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  • A big thanks to the Oregon State University Physics department for funding this research.
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  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2013-06-07T22:27:38Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) SPR Research Ferron.pdf: 2382003 bytes, checksum: 38fcc3bcd8dfe96a61d70565d462ae37 (MD5)
  • description.provenance : Made available in DSpace on 2013-06-07T22:27:38Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) SPR Research Ferron.pdf: 2382003 bytes, checksum: 38fcc3bcd8dfe96a61d70565d462ae37 (MD5) Previous issue date: 2013-05-31
  • description.provenance : Rejected by Sue Kunda(sue.kunda@oregonstate.edu), reason: Hi, Thomas. I'm rejecting your submission to ScholarsArchive@OSU because you assigned a CC0 license to your research. This is a public domain license, which requires you to revoke all your copyright and turn your work over to anyone who wants to use it for any purpose -- without attributing you. I'm assuming you wanted to assign a Creative Commons license, just not this one. If you re-submit your research (you won't have to enter the information again, it'll still be in the submission) and click on Creative Commons in the license dropdown box, you'll be given the opportunity to answer two questions about how you want people to use your work. Or you can just skip that step. on 2013-06-04T19:02:39Z (GMT)
  • description.provenance : Submitted by Thomas Ferron (ferront@onid.orst.edu) on 2013-06-07T20:28:58Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) SPR Research Ferron.pdf: 2382003 bytes, checksum: 38fcc3bcd8dfe96a61d70565d462ae37 (MD5)
  • description.provenance : Submitted by Thomas Ferron (ferront@onid.orst.edu) on 2013-06-03T20:44:37Z No. of bitstreams: 2 license_rdf: 1089 bytes, checksum: 0a703d871bf062c5fdc7850b1496693b (MD5) SPR Research Ferron.pdf: 2382003 bytes, checksum: 38fcc3bcd8dfe96a61d70565d462ae37 (MD5)

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