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Proceedings Paper

On the frequency-selective features of gold nanorods-based columnar thin film metamaterial absorber
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Paper Abstract

Metamaterials have been of great interest owing to multifarious technological applications. Among various applications of scientific need, the perfect absorber kind of property of metamaterials remains prudent. Within the context, this investigation describes the filtering/absorber applications of metasurfaces comprised of columnar nanorods of gold having circular and elliptical cross-sections. The spectral features of such absorbers are investigated in terms of absorptivity in the visible to infrared (IR) regimes. The results indicate of almost perfect absorption corresponding to certain wavelengths in the IR span. Also, multiple absorption peaks would determine the filtering characteristics of the structures under consideration. It has been found that the absorber having circular nanorods exhibits better performance than the one with elliptical nanorods in terms of the magnitude/smoothness of absorption peaks in the entire electromagnetic spectral region of interest; the case of elliptical nanorods makes the absorption spectra to yield too much of flickers in the IR range of wavelength.

Paper Details

Date Published: 26 September 2016
PDF: 7 pages
Proc. SPIE 9929, Nanostructured Thin Films IX, 992908 (26 September 2016); doi: 10.1117/12.2235843
Show Author Affiliations
Masih Ghasemi, Univ. Kebangsaan Malaysia (Malaysia)
P. K. Choudhury, Univ. Kebangsaan Malaysia (Malaysia)
M. A. Baqir, Univ. Kebangsaan Malaysia (Malaysia)
M. A. Mohamed, Univ. Kebangsaan Malaysia (Malaysia)
A. R. M. Zain, Univ. Kebangsaan Malaysia (Malaysia)
B. Y. Majlis, Univ. Kebangsaan Malaysia (Malaysia)

Published in SPIE Proceedings Vol. 9929:
Nanostructured Thin Films IX
Akhlesh Lakhtakia; Tom G. Mackay; Motofumi Suzuki, Editor(s)

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