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Journal of Nanomaterials
Volume 2014, Article ID 819432, 10 pages
http://dx.doi.org/10.1155/2014/819432
Research Article

Numerical and Experimental Study of the Structural Color by Widening the Pore Size of Nanoporous Anodic Alumina

Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China

Received 10 December 2013; Revised 8 February 2014; Accepted 10 February 2014; Published 29 April 2014

Academic Editor: Takuya Tsuzuki

Copyright © 2014 Jiawen Li 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

The structural color originated from the nanoporous anodic alumina (NAA) film is related to the structural characteristics. This paper aimed to obtain different structural colors which can cover the whole visible range by widening the pore size of metal-coated NAA. First, we used the Finite Difference Time Domain (FDTD) method to analyze the relationship between the physical structure and optical properties. Then, we fabricated different colors and expected color pattern by widening the pore diameter of NAA. Numerical and experimental study shows that the colors can cover the whole visible range by widening the pore diameter. This work can not only lead to better understanding of the mechanism of tuning color on NAA film, but also help us to fabricate expected color in the whole light range.