Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Jun 20;6:21. doi: 10.1186/s40580-019-0190-5

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

PMC Copyright notice

Fig. 9 — Electrochemical swelling driven color changes in photonic crystal systems. a Bio-inspired electroactive color changing 1D photonic crystal display. (i) Digital image of a cephalopod, (ii) protein based multilayer, (iii) A simple electrochemical cell is fabricated by introducing an electrolyte and lamella photonic gel between two ITO coated glass substrates. (iv) a lamella structure of PS-b-P2VP block copolymer. b Mechanism of the electrochemical color change, and optical images of the device with various electric potentials. c (i) Schematic of an electrochemical cell with 3D opal photonic crystals in polyferrocenylsilane (PFS) matrix. (ii) Electrochemical induced swelling leads to color change in the photonic crystal. d (i) Preparation process of PFS-based inverse opal structure. (ii) The inverse opal based photonic crystal is operated electrochemically

(Figure reproduced from a, b [70], Copyright 2009, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; c [73], Copyright 2007, Springer Nature; d [74], Copyright 2009, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)