Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Seeing the Light? Making Sense of Disorder in Polymer Opals

Abstract:
The iridescent colours of natural opals have fascinated people for thousands of years. It is interesting, however, that the colours we see are generated only by diffraction of light between the ordered planes of atoms which make up the structures. In order to reproduce this effect in artificial systems and to allow such opal characteristics to be applied to, for example, flexible materials such as clothing or packaging, research into synthetic opals has gained momentum in the last decades.

Seeing the Light? Making Sense of Disorder in Polymer Opals

Germany | Posted on December 7th, 2012

The diffraction of light from opal materials is very sensitive to the angle of reflection from the atomic planes within these materials, and variations in these angles can occur as a result of defects within the crystal structure. In order to fully characterize and understand the optical properties of synthesized opals it is important to be able to completely measure this angle-dependence; however, previously a technique to do this has been lacking.

Now, Andrew I. Haines and Jeremy J. Baumberg et al. have described a new way of measuring the three-dimensional angular scattering of light from nanostructures (hyperspectral goniometry technique), and use it to show that scattering from polymer opals, composed of ordered polymer nanospheres, is anisotropic. Specifically, light is scattered more broadly in the direction perpendicular to sample processing. They find that this effect is the result of chain defects, i.e., the presence of extra lines of polymer nanospheres, in the polymer-opal films tested; and that the enhanced colour observed when the structures are more highly ordered is due to an increased effective refractive-index contrast.

Furthermore, by doping these synthetic opal structures with light-absorbing carbon nanoparticles they discovered the colour saturation could be greatly improved as the nanoparticles absorb multiply scattered light so lower the background scattering without affecting the resonant scattering.

This 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. Advanced Optical Materials will start as an independent journal in 2013. More information can be found on www.advopticalmat.de

####

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:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Link to the original paper on Wiley Online Library:

Related News Press

News and information

Strength in numbers: Researchers develop the first-ever quantum device that detects and corrects its own errors March 4th, 2015

New research could lead to more efficient electrical energy storage March 4th, 2015

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

Arrowhead to Present at 2015 Barclays Global Healthcare Conference March 4th, 2015

Discoveries

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

Experiment and theory unite at last in debate over microbial nanowires: New model and experiments settle debate over metallic-like conductivity of microbial nanowires in bacterium March 4th, 2015

Magnetic vortices in nanodisks reveal information: Researchers from Dresden and Jülich use microwaves to read out information from smallest storage devices March 4th, 2015

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

Announcements

Experiment and theory unite at last in debate over microbial nanowires: New model and experiments settle debate over metallic-like conductivity of microbial nanowires in bacterium March 4th, 2015

Magnetic vortices in nanodisks reveal information: Researchers from Dresden and Jülich use microwaves to read out information from smallest storage devices March 4th, 2015

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

Arrowhead to Present at 2015 Barclays Global Healthcare Conference March 4th, 2015

Textiles/Clothing

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts February 3rd, 2015

Graphene displays clear prospects for flexible electronics February 2nd, 2015

Iranian Scientists Use MOFs to Eliminate Dye Pollutants January 29th, 2015

Photonics/Optics/Lasers

Black phosphorus is new 'wonder material' for improving optical communication March 3rd, 2015

Breakthrough in OLED technology March 2nd, 2015

International research partnership tricks the light fantastic March 2nd, 2015

Imec Demonstrates Compact Wavelength-Division Multiplexing CMOS Silicon Photonics Transceiver March 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE