Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

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 13th, 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; 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 ā80s, 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:
Billie Virginia Christian
Lawrence Livermore National Laboratory
Public Affairs, L-797
P.O. Box 808
Livermore CA 94550
Phone (925)422-6098

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

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Leti Coordinating Project to Develop Innovative Drivetrains for 3rd-generation Electric Vehicles: CEA Techís Contribution Includes Litenís Knowhow in Magnetic Materials and Simulation And Letiís Expertise in Wide-bandgap Semiconductors October 20th, 2017

Display technology/LEDs/SS Lighting/OLEDs

The secret to improving liquid crystal's mechanical performance: Better lubricating properties of lamellar liquid crystals could stem from changing the mobility of their structural dislocations by adding nanoparticles October 13th, 2017

Missing atoms in a forgotten crystal bring luminescence October 10th, 2017

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Nanocrystalline LEDs: Red, green, yellow, blue ... August 7th, 2017

Memory Technology

Injecting electrons jolts 2-D structure into new atomic pattern: Berkeley Lab study is first to show potential of energy-efficient next-gen electronic memory October 13th, 2017

First on-chip nanoscale optical quantum memory developed: Smallest-yet optical quantum memory device is a storage medium for optical quantum networks with the potential to be scaled up for commercial use September 11th, 2017

High-speed quantum memory for photons September 9th, 2017

Fast magnetic writing of data September 7th, 2017

Discoveries

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Novel 'converter' heralds breakthrough in ultra-fast data processing at nanoscale: Invention bagged four patents and could potentially make microprocessor chips work 1,000 times faster October 20th, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Materials/Metamaterials

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

The secret to improving liquid crystal's mechanical performance: Better lubricating properties of lamellar liquid crystals could stem from changing the mobility of their structural dislocations by adding nanoparticles October 13th, 2017

Announcements

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Leti Coordinating Project to Develop Innovative Drivetrains for 3rd-generation Electric Vehicles: CEA Techís Contribution Includes Litenís Knowhow in Magnetic Materials and Simulation And Letiís Expertise in Wide-bandgap Semiconductors October 20th, 2017

Tools

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

Nanometrics Announces Preliminary Results for the Third Quarter of 2017: Quarterly Results Impacted by Delays in Revenue Recognition on Multiple Systems into Japan October 12th, 2017

Seeing the next dimension of computer chips: Researchers image perfectly smooth side-surfaces of 3-D silicon crystals with a scanning tunneling microscope, paving the way for smaller and faster computing devices October 11th, 2017

Solar/Photovoltaic

New nanomaterial can extract hydrogen fuel from seawater: Hybrid material converts more sunlight and can weather seawater's harsh conditions October 4th, 2017

Researchers set time limit for ultrafast perovskite solar cells September 22nd, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

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