Disorder effects in reflectance spectra of colloidal photonic crystals

作     者：Vinteler, E. Farcau, C. Astilean, S. 

作者机构：Univ Babes Bolyai Fac Phys Cluj Napoca 400084 Romania Univ Babes Bolyai Inst Interdisciplinar Expt Res Nanobiophoton Lab Cluj Napoca 4000271 Romania 

出 版 物：《NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS》 (Nucl Instrum Methods Phys Res Sect B)

年 卷 期：2009年第267卷第2期

页      面：393-396页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：Second National Program for Research  Development and Innovation 

主　　题：Colloidal photonic crystals Finite-difference time-domain method 

摘      要：Although fabrication of photonic crystals improved over the last few years, intrinsic defects of the crystal lattice affect the experimentally measured spectral features. in order to compare experimental spectra with simulated photonic band structure, disorder effects are simulated by introduction of material absorption. By using the finite-difference time-domain (FDTD) method we were able in the past to obtain a good agreement between experimental and simulated transmission curves by taking in account the glass substrate. In this work we extend our analysis for reflectance curves of one, two and three-layered close-packed polystyrene spheres. We show that a key ingredient in simulating disorder effects is the introduction of fictional absorption for polystyrene. (c) 2008 Elsevier B.V. All rights reserved.