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Journal of Nanomaterials
Volume 2015 (2015), Article ID 451834, 7 pages
http://dx.doi.org/10.1155/2015/451834
Research Article

Parametric Studies on Artificial Morpho Butterfly Wing Scales for Optical Device Applications

1Department of Electronics Engineering, Pusan National University, Busan 609-735, Republic of Korea
2Department of Nanofusion Technology, Pusan National University, Miryang 627-706, Republic of Korea

Received 10 August 2015; Revised 5 October 2015; Accepted 7 October 2015

Academic Editor: Abdelwahab Omri

Copyright © 2015 Hyun Myung Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We calculated diffraction efficiencies of grating structures inspired by Morpho butterfly wings by using a rigorous coupled-wave analysis method. The geometrical effects, such as grating width, period, thickness, and material index, were investigated in order to obtain better optical performance. Closely packed grating structures with an optimized membrane thickness show vivid reflected colors and provide high sensitivity to surrounding media variations, which is applicable to vapor sensing or healthcare indicators. Morpho structures with high index materials such as zinc sulfide or gallium phosphide generate white color caused by broadband reflection that can be used as reflected light sources for display applications.