Ultra-thin optical interference coatings on rough and flexible substrates

被引：39

作者：

Kats, Mikhail A. ^{[1
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 13期

关键词：

ABSORPTION; ABSORBER; PIGMENT; FILMS;

D O I：

10.1063/1.4896527

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Recently demonstrated ultra-thin optical coatings comprising nanometer-thick highly absorbing films on top of reflecting substrates can display strong optical interference effects, resulting in structural colors and absorption enhancement. Here, we demonstrate that these optical interference effects persist when the films are deposited on substrates that have a large degree of roughness and inhomogeneity on micro- and nano-scales. In particular, we deposited films of gold and amorphous germanium onto paper which serves as a rough and flexible substrate and observe matte interference colors that vary as a function of the germanium thickness. (C) 2014 AIP Publishing LLC.

引用

页数：3

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