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

GLOBALFOUNDRIES and Chengdu Partner to Expand FD-SOI Ecosystem in China: More than $100M investment to establish a center of excellence for FDXTM FD-SOI design May 23rd, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Leti Will Demo World’s-first WVGA 10-µm Pitch GaN Microdisplays for Augmented Reality Video at Display Week in Los Angles: Invited Paper also Will Present Leti’s Success with New Augmented Reality Technology That Reduces Pixel Pitch to Less than 5 Microns May 22nd, 2017

Graphene-nanotube hybrid boosts lithium metal batteries: Rice University prototypes store 3 times the energy of lithium-ion batteries May 19th, 2017

Nanotubes/Buckyballs/Fullerenes

Fed grant backs nanofiber development: Rice University joins Department of Energy 'Next Generation Machines' initiative May 10th, 2017

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

Discoveries

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Sensors detect disease markers in breath May 19th, 2017

Graphene-nanotube hybrid boosts lithium metal batteries: Rice University prototypes store 3 times the energy of lithium-ion batteries May 19th, 2017

Plasmon-powered upconversion nanocrystals for enhanced bioimaging and polarized emission: Plasmonic gold nanorods brighten lanthanide-doped upconversion superdots for improved multiphoton bioimaging contrast and enable polarization-selective nonlinear emissions for novel nanoscal May 19th, 2017

Announcements

GLOBALFOUNDRIES and Chengdu Partner to Expand FD-SOI Ecosystem in China: More than $100M investment to establish a center of excellence for FDXTM FD-SOI design May 23rd, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Leti Will Demo World’s-first WVGA 10-µm Pitch GaN Microdisplays for Augmented Reality Video at Display Week in Los Angles: Invited Paper also Will Present Leti’s Success with New Augmented Reality Technology That Reduces Pixel Pitch to Less than 5 Microns May 22nd, 2017

Graphene-nanotube hybrid boosts lithium metal batteries: Rice University prototypes store 3 times the energy of lithium-ion batteries May 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