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

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

'Find the Lady' in the quantum world: International team of researchers presents method for quantum-mechanical swapping of positions October 18th, 2017

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

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Nanotubes/Buckyballs/Fullerenes/Nanorods

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

How to draw electricity from the bloodstream: A one-dimensional fluidic nanogenerator with a high power-conversion efficiency September 11th, 2017

Silk could improve sensitivity, flexibility of wearable body sensors August 20th, 2017

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries July 26th, 2017

Discoveries

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

'Find the Lady' in the quantum world: International team of researchers presents method for quantum-mechanical swapping of positions October 18th, 2017

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

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Announcements

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

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

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 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