Abstract

An oxidized carbon fiber has been modeled as a thin polymeric film, representing the surface species, coated with a graphite overlayer. Optical theory has been utilized to calculate the variations in the electric field intensities that occur when the graphite layer is overlayed on a film of PVAc (polyvinylacetate). The increase of the (<i>E</i>_z²) component has been observed. Spectral simulations based on Hansen's formulas clearly show the enhancement of the infrared absorbances. The enhancement proves to be dependent on the air gap thickness existing between the germanium element and the polymeric film and on the nature of the substrates.

Surface enhanced infrared absorption of chemisorbed carbon monoxide using plasmonic nanoantennas

J. Haase, S. Bagiante, H. Sigg, and J. A. van Bokhoven
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Hao Wang, Hui Zhang, Jiangli Dong, Shiqi Hu, Wenguo Zhu, Wentao Qiu, Huihui Lu, Jianhui Yu, Heyuan Guan, Shecheng Gao, Zhaohui Li, Weiping Liu, Miao He, Jun Zhang, Zhe Chen, and Yunhan Luo
Photon. Res. 6(6) 485-491 (2018)

Effect of substrate on graphite and other solar selective surfaces

D. R. McKenzie
Appl. Opt. 17(12) 1884-1888 (1978)

Optical absorption of surfaces modified by carbon filaments

Charles W. Bowers, Roger B. Culver, William A. Solberg, and Ian L. Spain
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Optical constants of amorphous hydrogenated germanium thin films

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Appl. Opt. 27(16) 3344-3350 (1988)