Nanotechnology Now

Our NanoNews Digest Sponsors





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

Quantum networks: Back and forth are not equal distances! July 28th, 2015

Smart hydrogel coating creates 'stick-slip' control of capillary action July 27th, 2015

Industrial Nanotech, Inc. Provides Update on PCAOB Audited Financials July 27th, 2015

Global Corrosion Resistant Nano Coatings Market To 2015: Acute Market Reports July 27th, 2015

Possible Futures

Smaller, faster, cheaper: A new type of modulator for the future of data transmission July 27th, 2015

Researchers predict material with record-setting melting point July 27th, 2015

Global Corrosion Resistant Nano Coatings Market To 2015: Acute Market Reports July 27th, 2015

Global Zinc oxide nanopowders Industry 2015: Acute Market Reports July 25th, 2015

Nanotubes/Buckyballs/Fullerenes

UT Dallas nanotechnology research leads to super-elastic conducting fibers July 24th, 2015

Nano-C Receives EPA Approvals for Single Walled Carbon Nanotubes July 21st, 2015

Global Carbon Nanotube Industry 2015 Market Research Report July 20th, 2015

Old astronomic riddle on the way to be solved July 16th, 2015

Nanoelectronics

Superfast fluorescence sets new speed record: Plasmonic device has speed and efficiency to serve optical computers July 27th, 2015

Spintronics: Molecules stabilizing magnetism: Organic molecules fixing the magnetic orientation of a cobalt surface/ building block for a compact and low-cost storage technology/ publication in Nature Materials July 25th, 2015

ORNL researchers make scalable arrays of 'building blocks' for ultrathin electronics July 22nd, 2015

An easy, scalable and direct method for synthesizing graphene in silicon microelectronics: Korean researchers grow 4-inch diameter, high-quality, multi-layer graphene on desired silicon substrates, an important step for harnessing graphene in commercial silicon microelectronics July 21st, 2015

Announcements

Quantum networks: Back and forth are not equal distances! July 28th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Industrial Nanotech, Inc. Provides Update on PCAOB Audited Financials July 27th, 2015

Global Corrosion Resistant Nano Coatings Market To 2015: Acute Market Reports July 27th, 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