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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 268-270Sensitivity Analysis of a Bioinspired Refractive...

Sensitivity Analysis of a Bioinspired Refractive Index Based Gas Sensor

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Abstract:

Nano-structures on the wing of Morpho butterflies generate bright blue color, and this color is sensitive to ambient gas, or more specifically, the refractive index of ambient gas. It was found that even slight change of the refractive index can lead to obvious change of the color. Such phenomenon has caught much attention and was employed as a sensing principle for detecting gas. In the present study, a typical nano-structure on the wing of Morpho butterflies is mimicked and simplified for constructing a refractive index based gas sensor. Moreover, partial derivative of the optical reflection efficiency with respect to the refractive index of ambient gas, i.e., sensitivity of the sensor, is utilized based on the rigorous coupled-wave analysis (RCWA) method. Finally, the effects of the nano-structure’s shape on the partial derivative are analyzed. The results can be applied to the design of the bioinspired refractive index based gas sensor.

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Computational Materials Science

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Periodical:

Advanced Materials Research (Volumes 268-270)

Pages:

235-240

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.268-270.235

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Cite this paper

Online since:

July 2011

Authors:

Yang Gao, Qi Xia, Guang Lan Liao, Tie Lin Shi

Keywords:

Diffraction Grating, Rigorous Coupled Wave Analysis, Sensitivity, Subwavelength Structure

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