使用聚电解质多层膜以纳米级精度定制光子晶体。

Tailoring photonic crystals with nanometer-scale precision using polyelectrolyte multilayers.

作者信息

Arsenault André C, Halfyard John, Wang Zhuo, Kitaev Vladimir, Ozin Geoffrey A, Manners Ian, Mihi A, Míguez H

出版信息

Langmuir. 2005 Jan 18;21(2):499-503. doi: 10.1021/la0479713.

Abstract

In this paper, we describe a rapid, accurate, and convenient method for postsynthetically tuning the optical properties of colloidal photonic crystals. High quality photonic crystal films are first synthesized and then coated iteratively with layers of water-soluble polyelectrolytes. The coating process results in nanometer-scale shifts in the photonic stop band, a process which has been monitored by theoretical modeling. The results suggest a fundamentally different, reproducible layering mechanism inside the confined spaces of the colloidal crystal where polyelectrolyte multilayers are less densely packed.

摘要

在本文中，我们描述了一种用于对胶体光子晶体的光学性质进行合成后调节的快速、准确且便捷的方法。首先合成高质量的光子晶体薄膜，然后用多层水溶性聚电解质进行迭代包覆。包覆过程导致光子禁带发生纳米级别的移动，这一过程已通过理论建模进行监测。结果表明，在胶体晶体的受限空间内存在一种根本不同的、可重现的分层机制，在该机制中聚电解质多层膜的堆积密度较低。