Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Dropping nano-anchor

Abstract:
PNNL-led group controls loading of functional 'anchor' molecules on carbon nanotubes without encumbering tubes' strength, conductivity

Dropping nano-anchor

San Diego, CA | March 17, 2005

Touch the tines of a tuning fork and it goes silent. Scientists have faced a similar problem trying to harness the strength and conductivity of carbon nanotubes, regarded as material of choice for the next generation of everything from biosensors to pollution-trapping sponges.

Fifield reported the group's findings today at the American Chemical Society national meeting. In the decade since the synthesis of the first carbon nanotubes, researchers have attached molecules—intended to be the "feelers" for picking up chemical sensations and passing the information to the nanotube—using techniques that call for strong acidity and other harsh conditions that compromise the material's utility.

"Usually, people use an organic solution of anchors and incubate the nanotubes in the solution to deposit the anchors," Fifield said. "This method allows little control over the level of anchor loading. Our innovation is the use of supercritical fluids—carbon dioxide, with both liquid and gas properties—for anchor deposition."

Their technique allows them "to deposit anchors on a wide variety of nanotube sample types, including those not easily incubated in solution," Fifield said. "It also enables us to control how much of a nanotube surface is coated with molecules and the thickness of the coating."

###

PNNL (www.pnl.gov) is a DOE Office of Science laboratory that solves complex problems in energy, national security, the environment and life sciences by advancing the understanding of physics, chemistry, biology and computation. PNNL employs 3,900, has a $650 million annual budget, and has been managed by Ohio-based Battelle since the lab's inception in 1965.



Contact:
Bill Cannon
(509) 375-3732
cannon@pnl.gov

Copyright © PNL

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

Nanotubes/Buckyballs

Tiny carbon nanotube pores make big impact October 29th, 2014

Materials for the next generation of electronics and photovoltaics: MacArthur Fellow develops new uses for carbon nanotubes October 21st, 2014

Special UO microscope captures defects in nanotubes: University of Oregon chemists provide a detailed view of traps that disrupt energy flow, possibly pointing toward improved charge-carrying devices October 21st, 2014

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Discoveries

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 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