Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Sandia researchers make solid ground toward better lithium-ion battery interfaces: Reducing the traffic jam in batteries December 13th, 2017

Perking up and crimping the 'bristles' of polyelectrolyte brushes December 13th, 2017

Columbia engineers create artificial graphene in a nanofabricated semiconductor structure: Researchers are the first to observe the electronic structure of graphene in an engineered semiconductor; finding could lead to progress in advanced optoelectronics and data processing December 13th, 2017

Leti to Demo Wristband with Embedded Sensors to Diagnose Sleep Apnea: APNEAband, Which Will Be Demonstrated at CES 2018, Also Monitors Mountain Sickness, Dehydration, Dialysis Treatment Response and Epileptic Seizures December 12th, 2017

Chemistry

UCLA chemists synthesize narrow ribbons of graphene using only light and heat: Tiny structures could be next-generation solution for smaller electronic devices December 8th, 2017

Copper will replace toxic palladium and expensive platinum in the synthesis of medications: The effectiveness of copper nanoparticles as a catalyst has been proven December 5th, 2017

Dendritic fibrous nanosilica: all-in-one nanomaterial for energy, environment and health November 4th, 2017

Researchers greenlight gas detection at room temperature October 26th, 2017

Thin films

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Rice University chemists make laser-induced graphene from wood July 31st, 2017

Graduate Students from Across the Country Attend Hands-on NanoCamp: Prominent scientists Warren Oliver, Ph.D., and George Pharr, Ph.D., presented a weeklong NanoCamp for hand-picked graduate students across the United States July 26th, 2017

Studying Argon Gas Trapped in Two-Dimensional Array of Tiny "Cages": Understanding how individual atoms enter and exit the nanoporous frameworks could help scientists design new materials for gas separation and nuclear waste remediation July 17th, 2017

Discoveries

Sandia researchers make solid ground toward better lithium-ion battery interfaces: Reducing the traffic jam in batteries December 13th, 2017

Perking up and crimping the 'bristles' of polyelectrolyte brushes December 13th, 2017

Columbia engineers create artificial graphene in a nanofabricated semiconductor structure: Researchers are the first to observe the electronic structure of graphene in an engineered semiconductor; finding could lead to progress in advanced optoelectronics and data processing December 13th, 2017

Untangling DNA: Researchers filter the entropy out of nanopore measurements December 8th, 2017

Materials/Metamaterials

Creating a new kind of metallic glass December 7th, 2017

Copper will replace toxic palladium and expensive platinum in the synthesis of medications: The effectiveness of copper nanoparticles as a catalyst has been proven December 5th, 2017

Chinese market opens up for Carbodeon nanodiamonds: Carbodeon granted Chinese Patent for Nanodiamond-containing Thermoplastic Thermal Compounds December 4th, 2017

Scientists make transparent materials absorb light December 1st, 2017

Announcements

Sandia researchers make solid ground toward better lithium-ion battery interfaces: Reducing the traffic jam in batteries December 13th, 2017

Perking up and crimping the 'bristles' of polyelectrolyte brushes December 13th, 2017

Columbia engineers create artificial graphene in a nanofabricated semiconductor structure: Researchers are the first to observe the electronic structure of graphene in an engineered semiconductor; finding could lead to progress in advanced optoelectronics and data processing December 13th, 2017

Leti to Demo Wristband with Embedded Sensors to Diagnose Sleep Apnea: APNEAband, Which Will Be Demonstrated at CES 2018, Also Monitors Mountain Sickness, Dehydration, Dialysis Treatment Response and Epileptic Seizures December 12th, 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