Abstract
Plasmonic coloration arises from resonant interaction between visible light and metallic nanostructures, which causes wavelength-selective absorption or scattering of light. This effect is sensitive to surface roughness that can perturb these resonant interactions and cause observed coloration to deviate from coloration predicted by simulations. We present a computational visualization approach that incorporates electrodynamic simulations and physically based rendering (PBR) to investigate the effect of nanoscale roughness on the structural coloration from thin, planar silver films decorated with nanohole arrays. Nanoscale roughness is modeled mathematically by a surface correlation function and parameterized in terms of roughness that is either out of or into the plane of the film. Our results provide photorealistic visualization of the influence of nanoscale roughness on the coloration from silver nanohole arrays in both reflectance and transmittance. Out-of-plane roughness has a significantly greater effect on coloration than in-plane roughness. The methodology introduced in this work is useful for modeling artificial coloration phenomena.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Wei Sen Loi and Kenneth J. Chau
Appl. Opt. 62(18) 4913-4920 (2023)
Yanru Chen, Zhifeng Tu, Hongcheng Hu, Junxi Zhang, Zien Feng, Ziyu Wang, Weiyi Hong, and Dongmei Deng
Opt. Lett. 48(8) 2030-2033 (2023)
Yi-Chen Lai, Shaobo Yang, His-Yu Feng, Yueh-Chi Lee, Zong-Han Li, Shung-Hsiang Wu, Yu-Sheng Lin, Hao-Yu Hsieh, Chun-Jui Chu, Wei-Cheng Chen, Yang-Yi Huang, Yang Kuo, and C. C. Yang
Opt. Express 31(10) 16010-16024 (2023)