Home > Press > Electrochromic Bragg mirror
Abstract:
Researchers report the first example of an electrochromic Bragg mirror based on nanoporous multilayers of nickel oxide and tungsten trioxide nanoparticles.
Electrochromic Bragg mirror
Germany | Posted on September 13th, 2012
Electrochromic materials change their color by electrically induced storage of ions and electrons in the material. This storage can be reversed by applying an opposing electrical bias.
Two prototypical electrochromic materials are tungsten trioxide, W(VI)O3, and nickel oxide, Ni(II)O.
Now, for the first time, both materials have been combined in a single photonic crystal architecture, where tungsten trioxide is the high refractive index component and nickel oxide the low refractive index component.
In contrast to electrochromic photonic crystals based on a single material, an applied potential does not lead to a strong spectral shift of the photonic stop band. Instead, the device behaves as an electrochromic Bragg mirror, where the reflectance can be modulated by the applied potential.
This reflectance modulation may be useful for tunable mirror devices and for grayscale control in reflective displays, such as ebooks.
The research was reported in Advanced Optical Materials, a new section in Advanced Materials dedicated to breakthrough discoveries and fundamental research in photonics, plasmonics, metamaterials, and more, covering all aspects of light-matter interactions.
####
For more information, please click here
Copyright © Wiley-VCH Materials Science Journals
If you have a comment, please
Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
To get Advanced Optical Materials email alerts: click here:
The paper, “Electrochromic Bragg Mirror: ECBM”, is free to download for a limited time:
News and information
SEMATECH to Address Critical Supply Chain Challenges and Present Latest Technology Advances at SEMICON West 2013 June 17th, 2013
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Discoveries
Working backward: Computer-aided design of zeolite templates: Rice scientists apply drug-design lessons to production of industrial minerals June 17th, 2013
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Announcements
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
AXEON Acquires Assets of Leading Reverse Osmosis Systems Manufacturer June 17th, 2013
Photonics/Optics/Lasers
Data Highways for Quantum Information June 13th, 2013
Polymer structures serve as 'nanoreactors' for nanocrystals with uniform sizes, shapes: Tiny chemistry June 11th, 2013
Catching individual molecules in a million with optical antennas inside nano-boxes June 10th, 2013
Whispering light hears liquids talk: University of Illinois researchers build first-ever bridge between optomechanics and microfluidics June 7th, 2013