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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 68, Iss. 5 — May. 1, 2014
  • pp: 593–602

Infrared Spectroscopic Analysis of Sub-Monolayer Perfluoropolyether Z-Tetraol Films Used in Boundary Lubrication

Robert J. Waltman

Applied Spectroscopy, Vol. 68, Issue 5, pp. 593-602 (2014)


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Abstract

Infrared specular reflection spectra of Z-Tetraol on a gold substrate was simulated and studied experimentally. The simulated spectra were obtained using a classical dispersion analysis coupled with solutions of Maxwell's equations for transmission and reflection of electromagnetic radiation. The simulated spectra, which are based on a randomly oriented sample, provide excellent fits for Z-Tetraol over a wide film thickness range. Spectroscopic data are provided for the Z-Tetraol -(CF2O)p-(CF2CF2O)q- main chain. The differences in the transverse and longitudinal optical infrared spectra are discussed for off-normal reflection spectra in the thin film limit. Corrections to the infrared reflection spectra for sub-monolayer coverage using effective medium theory are also discussed.

Citation
Robert J. Waltman, "Infrared Spectroscopic Analysis of Sub-Monolayer Perfluoropolyether Z-Tetraol Films Used in Boundary Lubrication," Appl. Spectrosc. 68, 593-602 (2014)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-68-5-593

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