Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > In solution, tiny magnetic wires scatter light

Abstract:
Ccientists command the direction in which light bounces off tiny, magnetic wires

In solution, tiny magnetic wires scatter light

March 14, 2005

Maneuvering external magnets, scientists can command the direction in which light bounces off tiny, magnetic wires that sway like matchsticks in thick, slow-moving solutions.

Announcing her finding here on March 13 at the 229th meeting of the American Chemical Society, University of Wisconsin-Madison materials chemist Anne Bentley described how suspended nickel wires - each 200 times thinner than a human hair - could one day serve as magneto-optical switches. The switches could aid in fields such as photonics, where light, rather than electricity, relays information.

"In a broader sense, it is also helpful to study how these wires behave in wet situations because if they are ever medically used, there is little inside our bodies that's dry," says Bentley, who suspended her wires in several types of fluids and found that the light-directing phenomenon was most consistent when she used "molasses-like" liquids such as glycerol.

"Another advantage that ‘magnetic fluids' may have over other light-directing devices, such as mirrors, is that fluids can easily take various shapes," Bentley adds.

Bentley calls her microscopic wires "nanowires" after nanotechnology, the booming, cutting-edge science of small. The "nano" in nanotechnology derives from the nanometer, which is equivalent to a billionth of one meter. Several types of nanoparticles are already in use, in products such as sunscreens and inkjet printer ink.

But in the fledgling realm of nanowire research, Bentley is one of only a few scientists worldwide who is studying the properties of nickel nanowires. Other nano-scale structures under investigation include, for instance, non-magnetic carbon nanotubes.

Nanowires have not yet ventured outside the research arena, but researchers believe they will one day become critical components in ever-shrinking electronic circuits. Nickel nanowires, for instance, could play a key role in storing information, says Bentley. In particular, scientists could use external magnets to dictate the orientation and position of magnetic nickel nanowires within complex and tiny electronic systems. Without such control, says Bentley, working with nano-scale circuit parts could be like "trying to put Legos together with oven mitts on."

####


Writer: Paroma Basu, (608) 262 9772, basu1@wisc.edu



Contact:
Anne Bentley
(608) 262-6711
akbentley@wisc.edu

Copyright © University of Wisconsin

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

Possible Futures

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Surface Characteristics Influence Cellular Growth on Semiconductor Material March 12th, 2014

The "Tipping Point" February 12th, 2014

Nanoelectronics

Better solar cells, better LED light and vast optical possibilities April 12th, 2014

Catching the (Invisible) Wave: UC Santa Barbara researchers create a unique semiconductor that manipulates light in the invisible infrared/terahertz range, paving the way for new and enhanced applications April 11th, 2014

Nanotech Business Review 2013-2014 April 9th, 2014

Preview of Hands-on Nanotechnology Demos at ‘Chemistry of Wine’ Fundraiser to Show Nanotech Magic April 8th, 2014

Announcements

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Oxford Instruments Asylum Research Introduces the MFP-3D InfinityTM AFM Featuring Powerful New Capabilities and Stunning High Performance April 18th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 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