Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

NREL Announces New Center Directors to lead R&D, Analysis Efforts September 30th, 2014

Yale University and Leica Microsystems Partner to Establish Microscopy Center of Excellence: Yale Welcomes Scientists to Participate in Core Facility Opening and Super- Resolution Workshops October 20 Through 31, 2014 September 30th, 2014

Speed at its limits September 30th, 2014

Research mimics brain cells to boost memory power September 30th, 2014

Discoveries

Research mimics brain cells to boost memory power September 30th, 2014

Ad-REIC vaccine: A magic bullet for cancer treatment September 30th, 2014

New Topical Hemostatic Agent: Neutral Self-Assembling Peptide Hydrogel September 30th, 2014

Chemical interactions between silver nanoparticles and thiols: A comparison of mercaptohexanol again September 30th, 2014

Announcements

Park Systems Announces Outsourced Analytical Services Including AFM Surface Imaging, Data Analysis and Interpretation September 30th, 2014

Ad-REIC vaccine: A magic bullet for cancer treatment September 30th, 2014

New Topical Hemostatic Agent: Neutral Self-Assembling Peptide Hydrogel September 30th, 2014

Chemical interactions between silver nanoparticles and thiols: A comparison of mercaptohexanol again September 30th, 2014

Textiles/Clothing

Teijin Aramidís carbon nanotube fibers awarded with Paul Schlack prize: New generation super fibers bring wave of innovations to fiber market September 25th, 2014

Excitonic Dark States Shed Light on TMDC Atomic Layers: Berkeley Lab Discovery Holds Promise for Nanoelectronic and Photonic Applications September 11th, 2014

Silver Replaced with Copper Nanoparticles to Produce Antibacterial Fabrics August 25th, 2014

New Nanosorbent Helps Elimination of Colorants from Textile Wastewater August 25th, 2014

Photonics/Optics/Lasers

Speed at its limits September 30th, 2014

'Pixel' engineered electronics have growth potential: Rice, Oak Ridge, Vanderbilt, Penn scientists lead creation of atom-scale semiconducting composites September 29th, 2014

Southampton scientists grow a new challenger to graphene September 23rd, 2014

Engineers show light can play seesaw at the nanoscale: Discovery is another step toward faster and more energy-efficient optical devices for computation and communication September 22nd, 2014

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 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE