Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > New tools that model 3D structure of amorphous materials to transform technology driven R&D

The production of amorphous red phosphorus was first reported by A. Vogel in 1813. Now pressure-dependent 3D atomic structure models have been constructed to be consistent with neutron and X-ray diffraction diamond anvil cell data.
Image by Scott Dougherty/LLNL.
The production of amorphous red phosphorus was first reported by A. Vogel in 1813. Now pressure-dependent 3D atomic structure models have been constructed to be consistent with neutron and X-ray diffraction diamond anvil cell data. Image by Scott Dougherty/LLNL.

Abstract:
Researchers have accurately identified tools that model the atomic and void structures of a network-forming elemental material. These tools may revolutionize the process of creating new solar panels, flat-panel displays, optical storage media and myriad other technological devices.

New tools that model 3D structure of amorphous materials to transform technology driven R&D

LIVERMORE, CA | Posted on October 15th, 2008

The team, made up of researchers from Lawrence Livermore National Laboratory, Rutherford Appleton Laboratory and Lawrence Berkeley National Laboratory, created 3D models of pressure-dependent structures of amorphous red phosphorus (an allotrope of the element phosphorous with different structural modifications) that for the first time are accurately portrayed by neutron and X-ray diffraction studies. They also developed a new method to accurately characterize void structures within network-forming materials.

These results on an elemental material serve as a benchmark indicating the ability of their analysis tools to accurately portray the entire structure of multi-atomic amorphous material systems. The mechanical, optical, magnetic and electronic plasticity of amorphous materials hold great promise toward enhancing current and emergent technologies. The new tools will build more systematic design paths leading to R&D advances.

Amorphous red phosphorus (a-rP) was first reported to be formed by A. Vogel in 1813 when sunlight was focused onto white phosphorus. During the 20th century, a-rP was studied intensely using a wide array of experimental and theoretical tools.

Beginning in the 1970s and '80s, amorphous or disordered materials were found to exhibit technologically viable properties by their central role in photovoltaic cells and portable opto-electronic storage media such as CDs, DVDs, and more recent Blu-Ray disks. However, attempts by scientists to accurately characterize seemingly simple elemental materials like a-rP were hindered because the appropriate analysis tools simply did not exist.

But the recent team of scientists: Joseph Zaug of LLNL, Alan Soper of Rutherford and Simon Clark of LBL, conducted X-ray and micro-Raman measurements of a-rP as a function of applied pressure and developed diffuse scattering analysis tools to unambiguously reveal not only 3D atomic structures, but also the void structures that significantly affect bulk material properties.

X-ray patterns of many amorphous materials reveal an unusually narrow and sometimes remarkably intense diffraction peak. The first sharp diffraction peak (FSDP) of multi-atomic systems is now predominately accepted to be associated with atomic scale voids that result from chemical-chemical bonding geometries.

As reported in the study that appears in the Oct. 12 online edition of the journal Nature Materials, the new void analysis tools may reveal that multi atomic amorphous material voids occur more simply from density-density fluctuations.

The diffuse scattering analysis tools developed by these scientists will enable more systematic engineering routes toward design and characterization of amorphous materials.

The team used the Advanced Light Source, Beam line 12.2.2, at Lawrence Berkeley Laboratory to conduct the X-ray scattering measurements.

####

About Lawrence Livermore National Laboratory
Founded in 1952, Lawrence Livermore National Laboratory is a national security laboratory, with a mission to ensure national security and apply science and technology to the important issues of our time. Lawrence Livermore National Laboratory is managed by Lawrence Livermore National Security, LLC for the U.S. Department of Energy's National Nuclear Security Administration.

For more information, please click here

Contacts:
Anne M. Stark
Phone: (925) 422-9799

Copyright © Lawrence Livermore National Laboratory

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 News Press

News and information

Aerotech X-Y ball-screw stage for economical high performance Planar positioning April 16th, 2014

Energy Research Facility Construction Project at Brookhaven Lab Wins U.S. Energy Secretary's Achievement Award April 16th, 2014

Malvern reports on the publication of the 1000th peer-reviewed paper to cite NanoSight’s Nanoparticle Tracking Analysis, NTA April 16th, 2014

Biologists Develop Nanosensors to Visualize Movements and Distribution of Plant Stress Hormone April 15th, 2014

Discoveries

Nanocrystalline cellulose modified into an efficient viral inhibitor April 15th, 2014

Tiny particles could help verify goods: Chemical engineers hope smartphone-readable microparticles could crack down on counterfeiting April 15th, 2014

A molecular approach to solar power: Switchable material could harness the power of the sun — even when it’s not shining April 15th, 2014

Targeting cancer with a triple threat: MIT chemists design nanoparticles that can deliver three cancer drugs at a time April 15th, 2014

Announcements

Aerotech X-Y ball-screw stage for economical high performance Planar positioning April 16th, 2014

Energy Research Facility Construction Project at Brookhaven Lab Wins U.S. Energy Secretary's Achievement Award April 16th, 2014

Malvern reports on the publication of the 1000th peer-reviewed paper to cite NanoSight’s Nanoparticle Tracking Analysis, NTA April 16th, 2014

Biologists Develop Nanosensors to Visualize Movements and Distribution of Plant Stress Hormone April 15th, 2014

Tools

Aerotech X-Y ball-screw stage for economical high performance Planar positioning April 16th, 2014

Malvern reports on the publication of the 1000th peer-reviewed paper to cite NanoSight’s Nanoparticle Tracking Analysis, NTA April 16th, 2014

JPK announces expansion of its global sales and service activities in China and USA April 15th, 2014

Affordable High Precision XY Nanopositioning Piezo Stage April 15th, 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