Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button

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

New remote-controlled microrobots for medical operations July 23rd, 2016

New superconducting coil improves MRI performance: UH-led research offers higher resolution, shorter scan time July 23rd, 2016

New probe developed for improved high resolution measurement of brain temperature: Improved accuracy could allow researchers to measure brain temperature in times of trauma when small deviations in temperature can lead to additional brain injury July 23rd, 2016

Quantum drag:University of Iowa physicist says current in one iron magnetic sheet can create quantized spin waves in another, separate sheet July 22nd, 2016

NEMS

Nano-photonics meets nano-mechanics: Controlling on-chip nano-optics by graphene nano-opto-mechanics January 22nd, 2016

Mechanical quanta see the light January 20th, 2016

Nanodevices at one-hundredth the cost: New techniques for building microelectromechanical systems show promise December 20th, 2015

Nano-mechanical study offers new assessment of silicon for next-gen batteries September 25th, 2015

Chip Technology

Quantum drag:University of Iowa physicist says current in one iron magnetic sheet can create quantized spin waves in another, separate sheet July 22nd, 2016

New Yale-developed device lengthens the life of quantum information July 22nd, 2016

New reaction for the synthesis of nanostructures July 21st, 2016

Research team led by NUS scientists develop plastic flexible magnetic memory device: Novel technique to implant high-performance magnetic memory chip on a flexible plastic surface without compromising performance July 21st, 2016

Nanotubes/Buckyballs/Fullerenes

Easier, faster, cheaper: A full-filling approach to making nanotubes of consistent quality: Approach opens a straightforward route for engineering the properties of single-wall carbon nanotubes July 19th, 2016

Sensing trouble: A new way to detect hidden damage in bridges, roads: University of Delaware engineers devise new method for monitoring structural health July 8th, 2016

Wireless, wearable toxic-gas detector: Inexpensive sensors could be worn by soldiers to detect hazardous chemical agents July 4th, 2016

Nanotubes' 'stuffing' as is: A scientist from the Lomonosov Moscow State University studied the types of carbon nanotubes' 'stuffing' June 2nd, 2016

Discoveries

New remote-controlled microrobots for medical operations July 23rd, 2016

New superconducting coil improves MRI performance: UH-led research offers higher resolution, shorter scan time July 23rd, 2016

Nanoparticle versus cancer: Scientists have created nanoparticles which cure cancer harmlessly July 22nd, 2016

Quantum drag:University of Iowa physicist says current in one iron magnetic sheet can create quantized spin waves in another, separate sheet July 22nd, 2016

Announcements

New remote-controlled microrobots for medical operations July 23rd, 2016

New superconducting coil improves MRI performance: UH-led research offers higher resolution, shorter scan time July 23rd, 2016

New probe developed for improved high resolution measurement of brain temperature: Improved accuracy could allow researchers to measure brain temperature in times of trauma when small deviations in temperature can lead to additional brain injury July 23rd, 2016

Quantum drag:University of Iowa physicist says current in one iron magnetic sheet can create quantized spin waves in another, separate sheet July 22nd, 2016

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







Car Brands
Buy website traffic