Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Molecular Layer Deposition: building hybrid materials one layer at at time

http://doi.wiley.com/10.1002/adfm.201200370|Link to the original paper on Wiley Online Library:
http://doi.wiley.com/10.1002/adfm.201200370|Link to the original paper on Wiley Online Library:

Abstract:
As the applications of nanotechnology grow more sophisticated, the controlled deposition of exceedingly thin layers of materials becomes of ever growing importance. A well-known technique called atomic layer deposition (ALD) can meet this challenge quite well for the deposition of thin inorganic oxide films.

Molecular Layer Deposition: building hybrid materials one layer at at time

Germany | Posted on September 13th, 2012

Using this method, films can be deposited one atomic layer at a time, as if meticulously built up by a nanometer-sized bricklayer. Each deposition step uses a metal-organic precursor, and the remaining organic ligands are subsequently burnt off leaving only the inorganic film as well as preparing the surface for the next deposition step.

In its traditional method of application, it would seem that there is no chance to incorporate organic components into such films with ALD. However, Professor Steven George and co-workers have written a short review on an emerging technique called Molecular Layer Deposition (MLD), where hybrid materials can be fabricated using an adaption of conventional ALD. This new method promises open up a whole new array of possibilities for surface scientists, by adding a new degree of flexibility to thin film preparation.

In its most common form, MLD can be used to make self-limiting, conformal, pinhole-free films of metal-organic materials called metalcones. The first example of this sort was the synthesis of "alucones" (aluminum-containing metalcones) from trimethylaluminum and ethylene glycol, as illustrated in the accompanying image above. Based upon this methodology, there is a great deal of flexibility for altering the metal as well as the organic ligand in order to fabricate hybrid thin films with customized properties. By mixing the precursors for oxide growth using ALD with those used for MLD, one can also tune the degree of incorporation of the organic component in the films.

Using this method, researchers have already tuned the elastic modulus of thin films for mechanical applications, the refractive index for optical applications, and the electrical conductivity for electronic applications. All of this means that one can tailor the properties of a surface coating "made to order". The films can then be used as is, or the organic component can alternatively be burnt off to create a material with tailored porosity for applications such as catalysis. With such a degree of tunability, the possibilities are virtually endless, as Molecular Layer Deposition helps to change the face of nanomaterials, one layer at a time.

####

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 News Press

News and information

HP Supercomputer at NREL Garners Top Honor October 19th, 2014

First Canada Excellence Research Chair gets $10 million from the federal government for oilsands research at the University of Calgary: Federal government announces prestigious research chair to study improving oil production efficiency October 19th, 2014

Ucore's McKenzie to Deliver Presentation to Rare Earths Conference in Singapore as Highlight of Fall 2014 Marketplace Schedule October 19th, 2014

Non-Toxic Nanocatalysts Open New Window for Significant Decrease in Reaction Process October 19th, 2014

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Chemistry

Non-Toxic Nanocatalysts Open New Window for Significant Decrease in Reaction Process October 19th, 2014

QD Vision Wins Prestigious Presidential Green Chemistry Challenge Award from the U.S. Environmental Protection Agency October 16th, 2014

Unique catalysts for hydrogen fuel cells synthesized in ordinary kitchen microwave oven October 14th, 2014

Thin films

Nanocoatings Market By Product Is Expected To Reach USD 8.17 Billion By 2020: Grand View Research, Inc. October 15th, 2014

3x improvement in wear resistance from Carbodeon nanodiamond-enhanced electroless nickel plating October 14th, 2014

Tailored flexible illusion coatings hide objects from detection October 13th, 2014

Discoveries

Non-Toxic Nanocatalysts Open New Window for Significant Decrease in Reaction Process October 19th, 2014

Plastic nanoparticles also harm freshwater organisms October 18th, 2014

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Nanotechnology Improves Quality of Anti-Corrosive Coatings October 17th, 2014

Materials/Metamaterials

Nanotechnology Improves Quality of Anti-Corrosive Coatings October 17th, 2014

Graphenea opens US branch October 16th, 2014

3DXNano™ ESD Carbon Nanotube 3D Printing Filament - optimized for demanding 3D printing applications in the semi-con and electronics industry October 16th, 2014

Nanocoatings Market By Product Is Expected To Reach USD 8.17 Billion By 2020: Grand View Research, Inc. October 15th, 2014

Announcements

HP Supercomputer at NREL Garners Top Honor October 19th, 2014

First Canada Excellence Research Chair gets $10 million from the federal government for oilsands research at the University of Calgary: Federal government announces prestigious research chair to study improving oil production efficiency October 19th, 2014

Ucore's McKenzie to Deliver Presentation to Rare Earths Conference in Singapore as Highlight of Fall 2014 Marketplace Schedule October 19th, 2014

Non-Toxic Nanocatalysts Open New Window for Significant Decrease in Reaction Process October 19th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE