The structural color found in biological systems has complicated nanostructure. It is very important to determine its color mechanism. In this study, the 2D photonic crystal structures of the Papilio blumei butterfly were constructed, and the corresponding reflectance spectra were simulated by the finite-difference time-domain method. The structural color of the butterfly depends on the incident angle of light, film thickness, film material (film refractive index), and the size of the air hole (effective refractive index). Analysis of simulations can help us understand the hue, brightness, and saturation of structural color on the butterfly wing. As a result, the analysis can help us fabricate expected structural color.
© 2014 Optical Society of America
Original Manuscript: August 30, 2013
Revised Manuscript: November 8, 2013
Manuscript Accepted: December 18, 2013
Published: January 24, 2014
Mei-Ling Lo and Cheng-Chung Lee, "Structural color mechanism in the Papilio blumei butterfly," Appl. Opt. 53, A399-A404 (2014)