Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > New knowledge about the deformation of nanocrystals offers new tools for nanotechnology

Abstract:
With new, advanced equipment, scientists at Risø DTU have shown that materials to produce micro-and nanocomponents react very differently depending on whether crystals are large or small. This research creates important knowledge that can be used to develop technologies aimed at the nanoproduction of micro-electro-mechanical systems such as digital microphones in mobile phones, miniature pressure sensors in water pumps and acceleration sensors in airbags.

New knowledge about the deformation of nanocrystals offers new tools for nanotechnology

Denmark | Posted on January 30th, 2010

The nanotechnology toolbox is expanding continuously and the material for nanocomponents is a chapter by itself, because materials at nanoscale often react quite differently than materials at large scale. Therefore it is necessary to know what happens when you squeeze, flatten and stamp out metals for nanocomponents. Otherwise, the finished component may not be functioning as it should.

Using transmission electron microscopy (TEM) and cooperating with research institutions in China and the USA, Risø DTU has looked into what happens when you deform crystals of nanosize from the metal titanium. At this scale the size of the titanium crystals determines the behaviour of the metal during mechanical treatment. Titanium crystals of a certain size are deformed in a way that each atom is systematically displaced in proportion to the neighbouring atoms, which results in a macroscopic deformation. This process is called 'deformation twinning'. When the titanium crystals become smaller, they are much more difficult to deform. However, this only applies to a certain lower limit.

When titanium crystals become smaller than 1 micrometer (0.001 mm), they are deformed in the same way as very large crystals. This kind of deformation is called 'dislocation plasticity'. The discovery has great significance for how to produce nanocomponents of metal and ceramics in order to obtain the desired properties in a final component.

With support from the Danish Council for Independent Research, the Danish Research Council for Nature and Universe (FNU), Risø National Laboratory for Sustainable Energy, DTU has acquired new, advanced equipment to study nanocrystals of metal while they are being deformed in an electron microscope. This equipment has recently been developed by the company Hysitron Incorporated in the USA. The new equipment allows scientists to study in very fine detail structural changes in the TEM while they, with great precision, can deform the metal crystals, and thereby obtain a detailed knowledge of the surprising new nano phenomena.

The results will provide the technologies for nano production with important new knowledge. They were published in the world-renowned journal Nature on 21 January (Nature 21 January 2010, Volume 463, Number 7279 pp269-392).

Senior Scientist Xiaoxu Huang from the Materials Research Division at Risø DTU participated in the collaboration. The Chinese partner was Xi'an Jiaotong University and the US partners were the University of Pennsylvania, The John Hopkins University and Hysitron Incorporated.

####

For more information, please click here

Contacts:
Xiaoxu Huang
Materials Research (AFM)
Dir tel+45 4677 5755

Copyright © Risø DTU

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

Nano 'sandwich' offers unique properties: Rice University researchers simulate two-dimensional hybrids for optoelectronics February 27th, 2017

Dream Chip Technologies Presents First 22nm FD-SOI Silicon of New Automotive Driver Assistance SoC: Advanced driver assistance system (ADAS) computer vision SoC developed for European THINGS2DO project with working first silicon fabricated on GLOBALFOUNDRIES’ 22nm FD-SOI Platfor February 27th, 2017

Sandia use confined nanoparticles to improve hydrogen storage materials performance: Big changes from a small package for hydrogen storage February 25th, 2017

New nano approach could cut dose of leading HIV treatment in half February 24th, 2017

Govt.-Legislation/Regulation/Funding/Policy

Nano 'sandwich' offers unique properties: Rice University researchers simulate two-dimensional hybrids for optoelectronics February 27th, 2017

Sandia use confined nanoparticles to improve hydrogen storage materials performance: Big changes from a small package for hydrogen storage February 25th, 2017

Atom-scale oxidation mechanism of nanoparticles helps develop anti-corrosion materials February 24th, 2017

Atomic force imaging used to study nematodes: KFU bionanotechnology lab (head - Dr. Rawil Fakhrullin) has obtained 3-D images of nematodes' cuticles February 23rd, 2017

MEMS

Engineers shrink microscope to dime-sized device February 17th, 2017

Leti Coordinating Project to Adapt Obstacle-Detection Technology Used in Autonomous Cars for Portable and Wearable Systems: INSPEX to Combine Knowhow of Nine European Organizations to Create Portable and Wearable Spatial-Exploration Systems February 2nd, 2017

Manufacturing platform makes intricate biocompatible micromachines January 7th, 2017

STMicroelectronics Peps Up Booming Social-Fitness Scene with Smart Motion Sensors for Better Accuracy, Longer Battery Life, and Faster Time to Market January 2nd, 2017

Sensors

Nano 'sandwich' offers unique properties: Rice University researchers simulate two-dimensional hybrids for optoelectronics February 27th, 2017

Strem Chemicals and Dotz Nano Ltd. Sign Distribution Agreement for Graphene Quantum Dots Collaboration February 21st, 2017

Liquid metal nano printing set to revolutionize electronics: Creating integrated circuits just atoms thick February 18th, 2017

Research opens door to smaller, cheaper, more agile communications tech February 16th, 2017

Announcements

Nano 'sandwich' offers unique properties: Rice University researchers simulate two-dimensional hybrids for optoelectronics February 27th, 2017

Dream Chip Technologies Presents First 22nm FD-SOI Silicon of New Automotive Driver Assistance SoC: Advanced driver assistance system (ADAS) computer vision SoC developed for European THINGS2DO project with working first silicon fabricated on GLOBALFOUNDRIES’ 22nm FD-SOI Platfor February 27th, 2017

Sandia use confined nanoparticles to improve hydrogen storage materials performance: Big changes from a small package for hydrogen storage February 25th, 2017

New nano approach could cut dose of leading HIV treatment in half February 24th, 2017

Tools

Atomic force imaging used to study nematodes: KFU bionanotechnology lab (head - Dr. Rawil Fakhrullin) has obtained 3-D images of nematodes' cuticles February 23rd, 2017

JPK selects compact tensile stage from Deben for their NanoWizard® AFM platform to broaden capabilities for materials characterisation February 22nd, 2017

Molecular phenomenon discovered by advanced NMR facility: Cutting edge technology has shown a molecule self-assembling into different forms when passing between solution state to solid state, and back again - a curious phenomenon in science - says research by the University of Wa February 22nd, 2017

Strem Chemicals and Dotz Nano Ltd. Sign Distribution Agreement for Graphene Quantum Dots Collaboration February 21st, 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