Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Prevent Nanograss Collapsing

Abstract:
The synthesis of several types of one-dimensional structures like nanowires, nanobelts, and nanotubes have recently attracted considerable interest. Because of their one-dimensional structure vertically aligned nanostructural arrays exhibit a much higher active surface than comparable thin film arrays.

Prevent Nanograss Collapsing

Germany | Posted on June 1st, 2011

In particular, vertical aligned arrays of semiconductive nanostructures with a high length/diameter aspect ratio opens up a broad spectrum of novel applications. Uniform and free standing assembly of nanostructures are promising materials for photovoltaic or light emitting applications, due to their well defined channels working as carriers. One of the cost effective methods to achieve nantoubes or nanowires with high aspect ratios (HARs) is the template deposition method.

However, any HAR structures synthesized using any currently existing template method have the major disadvantage of these methods occurring during the separation of the nanostructures from the template. The higher the aspect ratio of length and diameter, the more the nanostructures tends to collapse into wheat-like structures.

At the Darmstadt University of Technology, Germany, M. Böhme and Professor Ensinger developed a novel process to inhibit the mechanism of collapsing nanostructures synthesized by template-based deposition. They succeeded in the controlled fabrication of nanograss-like and free standing nanostructures with a high length/ diameter aspect ratio.

Böhme and Ensinger used liquid CO2 as a treating agent instead of dichloromethane with its high surface energy leading the nanostructures across into an ambient with low surface energy. Thus they were capable of preventing the nanostructures collapsing during any step of operation. Significantly, this procedure provides a fundamental technique for all kinds of applications and devices based on one-dimensional HAR nanostructures.

####

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

M. Böhme and W. Ensinger, Adv. Eng. Mater. ; DOI: 10.1002/adem.201000346

Related News Press

News and information

Graphene holds up under high pressure: Used in filtration membranes, ultrathin material could help make desalination more productive April 24th, 2017

Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types April 24th, 2017

Russian scientists create new system of concrete building structures: Sientists of Peter the Great Saint-Petersburg Polytechnic University developed a new construction technology April 24th, 2017

Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other – not merely making contact April 21st, 2017

Nanotubes/Buckyballs/Fullerenes

Nanotubes that build themselves April 14th, 2017

Intertronics introduce new nanoparticle deagglomeration technology March 15th, 2017

Boron atoms stretch out, gain new powers: Rice University simulations demonstrate 1-D material's stiffness, electrical versatility January 26th, 2017

New stem cell technique shows promise for bone repair January 25th, 2017

Discoveries

Graphene holds up under high pressure: Used in filtration membranes, ultrathin material could help make desalination more productive April 24th, 2017

Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types April 24th, 2017

Russian scientists create new system of concrete building structures: Sientists of Peter the Great Saint-Petersburg Polytechnic University developed a new construction technology April 24th, 2017

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

Announcements

Graphene holds up under high pressure: Used in filtration membranes, ultrathin material could help make desalination more productive April 24th, 2017

Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types April 24th, 2017

Russian scientists create new system of concrete building structures: Sientists of Peter the Great Saint-Petersburg Polytechnic University developed a new construction technology April 24th, 2017

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 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