Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Atomic Wire with Protective Sheath

Abstract:
Stable metal nanowires one atom wide inside carbon nanotubes

Atomic Wire with Protective Sheath

Japan | Posted on October 7th, 2009

Wires with atomic dimensions are potential structural elements for future nanoscopic electronic components. Such fine wires have completely new electronic properties. However, apart from the non-trivial production of metallic nanowires, their high chemical reactivity is a critical problem; they are easily oxidized in air and are not stable. Japanese researchers working with R. Kitaura and H. Shinohara have now developed a new method that is simple and delivers stable nanowires: They deposit metal atoms inside of carbon nanotubes. As the scientists report in the journal Angewandte Chemie, this forms metal wires of individual atoms lined up side-by-side that are so well protected by their sheath that they have long-term stability.

The method of production simply involves heating carbon nanotubes and a metal powder together in a vacuum. It works for all metals that enter into a gaseous phase at relatively low temperatures, such as europium, samarium, ytterbium, and strontium. The metal atoms almost completely fill the cavity inside the carbon nanotubes. Using europium metal and carbon nanotubes with an inner diameter of about 0.76 nm, the researchers were able to obtain wires made of a single chain of individual atoms. This first true one-dimensional nanowires was also stable after one month of exposure to air.

By using carbon nanotubes with different inner diameters, ultrafine wires with various diameters could be produced, which were for example formed of two or four atomic chains. In comparison to macroscopic europium crystals, the atomic wires demonstrate significantly different electronic and magnetic properties.

The nanowires are an ideal model for the study of one-dimensional phenomena. The researchers now aim to test the properties of the wires with respect to their suitability for use as "wiring" for nanoelectronic components.

Congratulations to V. Ramakrishnan, T. A. Steitz, and A. Yonath on the receipt of the Nobel Prize in Chemistry. Yonath is a member of the editorial board of our sister journal ChemBioChem; current reviews by her are available on request.

Author: Hisanori Shinohara, Nagoya University (Japan),

Title: High-Yield Synthesis of Ultrathin Metal Nanowires in Carbon Nanotubes

Angewandte Chemie International Edition 2009, 48, No. 44, doi: 10.1002/anie.200902615

####

For more information, please click here

Contacts:
Hisanori Shinohara
Nagoya University (Japan)

Editorial office:
or Amy Molnar (US): or Jennifer Beal (UK): or Alina Boey (Asia):

Copyright © Angewandte Chemie

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

So, near and yet so far: Stable HGNs for Raman April 1st, 2015

Two-dimensional dirac materials: Structure, properties, and rarity April 1st, 2015

3-D neural structure guided with biocompatible nanofiber scaffolds and hydrogels April 1st, 2015

Light-powered gyroscope is world's smallest: Promises a powerful spin on navigation April 1st, 2015

Possible Futures

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015

Nanotechnology Drug Delivery Market in the US 2012-2016 : Latest Report Available by Radiant Insights, Inc March 16th, 2015

Nanotubes/Buckyballs

From tobacco to cyberwood March 31st, 2015

Wrapping carbon nanotubes in polymers enhances their performance: Scientists at Japan's Kyushu University say polymer-wrapped carbon nanotubes hold much promise in biotechnology and energy applications March 30th, 2015

Carbon nanotube fibers make superior links to brain: Rice University invention provides two-way communication with neurons March 25th, 2015

Iranian Scientists Eliminate Expensive Materials from Diabetes Diagnosis Sensors March 25th, 2015

Nanoelectronics

Rutgers, NIST physicists report technology with potential for sub-micron optical switches March 31st, 2015

SUNY POLY CNSE to Host First Ever Northeast Semi Supply Conference (NESCO) Conference Will Connect New and Emerging Innovators in the Northeastern US and Canada with Industry Leaders and Strategic Investors to Discuss Future Growth Opportunities in NYS March 25th, 2015

UW scientists build a nanolaser using a single atomic sheet March 24th, 2015

Iranian Researchers Present Model to Determine Dynamic Behavior of Nanostructures March 24th, 2015

Announcements

So, near and yet so far: Stable HGNs for Raman April 1st, 2015

Two-dimensional dirac materials: Structure, properties, and rarity April 1st, 2015

3-D neural structure guided with biocompatible nanofiber scaffolds and hydrogels April 1st, 2015

Light-powered gyroscope is world's smallest: Promises a powerful spin on navigation April 1st, 2015

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 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE