Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > A cautionary note in the use of carbon nanotubes as interconnects

Abstract:

Press Releases

A cautionary note in the use of carbon nanotubes as interconnects
16/9/2008
A cautionary note in the use of carbon nanotubes as interconnects



Researchers at the University of Surrey's Advanced Technology Institute (UK) have used scanning tunnelling microscopy to confirm remarkable changes in the fundamental electronic behaviour when double-walled carbon nanotubes are subject to radial deformations and torsional strain. The work reported in Nano Letters (reference below) reveals that squashing and twisting a double-walled nanotube opens an electronic band gap in an otherwise metallic system, which has major ramifications on the use of carbon nanotubes for electronic and NEMS applications.

A cautionary note in the use of carbon nanotubes as interconnects

UK | Posted on September 16th, 2008

Dr. Cristina Giusca, the lead author of the paper said: "Fundamentally, the importance of the intershell interaction in collapsed double-walled carbon nanotubes points to the potential of a reversible metal-semiconductor junction, which can have device applications, as well as sending a cautionary note in the design of semiconductor components based on carbon nanotubes".

Since deformations can occur in response to the growth, processing or characterization conditions of carbon nanotubes, the work is of relevance in matters concerning the characterisation of these structures, as the majority of electronic transport measurements are performed using various metals to contact the nanotubes, and the measured values could in this case be affected by hidden contributions.

Professor Ravi Silva, who leads the Advanced Technology Institute, indicated that "These findings are of crucial importance for the future integration of carbon nanotubes with conventional existing electronic technologies, where, for example, fabrication methods can induce deformations by placing control electrodes on top of nanotubes or by embedding the nanotubes into other structures".

Chief among the use of these structures would be carbon nanotubes as interconnects for the billion dollar semiconductor industry which, according to the ITRS roadmap, has yet to have a solution in place for 2012 integrated circuits. Therefore, the deformation and mechanical integrity study on a nano-scale of these essential components would be of paramount importance.

Additionally, the work should pose an excellent challenge to experimentalists to create ingenious ways which allow deforming carbon nanotubes in a controllable manner to easily provide the required metallic or semiconducting features. As high conformational deformations, similar to the ones presented in the paper, have been shown by simulations to significantly enhance locally the chemical reactivity of carbon nanotubes, controlled deformations could also find prospective applications for potential sensing devices.

Nano Letters - dx.doi.org/10.1021/nl801782k

####

For more information, please click here

Contacts:
Stuart Miller
Communications Manager
Tel: +44 (0) 01483 689314
Mob: +44 (0) 7792 210570

Peter La
Press Officer
Tel: +44 (0) 01483 689191
Mob: +44 (0) 7817 799667

Copyright © University of Surrey

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

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

New pricing report for bulk graphene materials September 13th, 2014

Berkeley Lab Licenses Boron Nitride Nanotube Technology: New material has unique mechanical and electronic properties September 13th, 2014

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

NEMS

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

LetiDays Grenoble to Present Multiple Perspectives on Development, Challenges and Markets for the IoT April 14th, 2014

Columbia engineers make world's smallest FM radio transmitter: Team demonstrates new application of graphene using positive feedback November 18th, 2013

Revisiting quantum effects in MEMS: New calculations shows that the influence of quantum effects on the operating conditions of nanodevices has, until now, been overestimated November 15th, 2013

Chip Technology

UT Arlington research uses nanotechnology to help cool electrons with no external sources September 11th, 2014

Excitonic Dark States Shed Light on TMDC Atomic Layers: Berkeley Lab Discovery Holds Promise for Nanoelectronic and Photonic Applications September 11th, 2014

Researchers Create World’s Largest DNA Origami September 11th, 2014

Development of Algorithm for Accurate Calculation of Average Distance Travelled by Low-Speed Electrons without Energy Loss that Are Sensitive to Surface Structure September 11th, 2014

Nanotubes/Buckyballs

Berkeley Lab Licenses Boron Nitride Nanotube Technology: New material has unique mechanical and electronic properties September 13th, 2014

Global Energy Systems Signs Master Sales Agreement with China Aviation Supplies Group September 4th, 2014

Breakthrough for Carbon Nanotube Solar Cells: Polychiral carbon nanotube mixture absorbs more sunlight September 3rd, 2014

SouthWest NanoTechnologies CEO Dave Arthur to Discuss “Carbon Nanotubes and Automotive Applications” at The Automotive Composites Conference and Expo 2014 (ACCE2014) August 28th, 2014

Discoveries

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

Boosting armor for nuclear-waste eating microbes September 12th, 2014

Ceramics don't have to be brittle: Caltech materials scientists are creating materials by design September 11th, 2014

Researchers Create World’s Largest DNA Origami September 11th, 2014

Announcements

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

New pricing report for bulk graphene materials September 13th, 2014

Berkeley Lab Licenses Boron Nitride Nanotube Technology: New material has unique mechanical and electronic properties September 13th, 2014

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 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