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

An accelerated pipeline to open materials research: ORNL workflow system unites imaging, algorithms, and HPC to advance materials discovery and design July 24th, 2016

Russian physicists discover a new approach for building quantum computers: Physicists find a way of 'bundling together' multiple elements of a quantum computer July 24th, 2016

A 'smart dress' for oil-degrading bacteria July 24th, 2016

New superconducting coil improves MRI performance: UH-led research offers higher resolution, shorter scan time July 23rd, 2016

Nanotubes/Buckyballs/Fullerenes

Easier, faster, cheaper: A full-filling approach to making nanotubes of consistent quality: Approach opens a straightforward route for engineering the properties of single-wall carbon nanotubes July 19th, 2016

Sensing trouble: A new way to detect hidden damage in bridges, roads: University of Delaware engineers devise new method for monitoring structural health July 8th, 2016

Wireless, wearable toxic-gas detector: Inexpensive sensors could be worn by soldiers to detect hazardous chemical agents July 4th, 2016

Nanotubes' 'stuffing' as is: A scientist from the Lomonosov Moscow State University studied the types of carbon nanotubes' 'stuffing' June 2nd, 2016

Discoveries

An accelerated pipeline to open materials research: ORNL workflow system unites imaging, algorithms, and HPC to advance materials discovery and design July 24th, 2016

Russian physicists discover a new approach for building quantum computers: Physicists find a way of 'bundling together' multiple elements of a quantum computer July 24th, 2016

A 'smart dress' for oil-degrading bacteria July 24th, 2016

New remote-controlled microrobots for medical operations July 23rd, 2016

Announcements

An accelerated pipeline to open materials research: ORNL workflow system unites imaging, algorithms, and HPC to advance materials discovery and design July 24th, 2016

Russian physicists discover a new approach for building quantum computers: Physicists find a way of 'bundling together' multiple elements of a quantum computer July 24th, 2016

A 'smart dress' for oil-degrading bacteria July 24th, 2016

New superconducting coil improves MRI performance: UH-led research offers higher resolution, shorter scan time July 23rd, 2016

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







Car Brands
Buy website traffic