Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Breakthrough in low temperature growth of carbon nanotubes

Abstract:
Researchers at the University of Surrey have discovered a way to grow high-quality carbon nanotubes over large areas at substrate temperatures below 350șC, according to findings published this month in Carbon journal.

Breakthrough in low temperature growth of carbon nanotubes

UK | Posted on January 24th, 2011

This breakthrough by experts in the University's Advanced Technology Institute means that lowering the substrate temperature below 400șC would make this technology compatible with CMOS (a technology for constructing integrated circuits) and suitable for large area substrates.

As a result potential applications of carbon nanotubes - ranging from interconnectors for integrated circuits, solar cell electrodes, supercapacitors, electrodes for batteries and fuel cells to nano-composite materials for high strength materials in body armour, aircraft wings, vehicle chassis and stealth materials - would become feasible and affordable if the growth temperature of the substrates were to be reduced from its current 700șC, the University of Surrey researchers said.

Carbon nanotubes are rolled up sheets of honeycomb-structured carbon atoms that are typically ten thousandth the width of a human hair or hundred thousandth of a millimetre in diameter. The single or multi-walled carbon nanotube structures have amazing electronic properties with conductivity better than any other known single element material including copper, thermal conductivity better than diamond, and extraordinary mechanical strength surpassing that of high tensile steel.

The breakthrough reported by Professor Ravi Silva's group at the University of Surrey allows researchers to couple plasma energy more efficiently to the catalyst particles used to grow carbon nanotubes. The researchers have demonstrated that high-quality carbon nanotubes can be grown controllably, reliably and over large areas while maintaining the device substrates at low temperatures.

Dr Vlad Stolojan, a key researcher and author of the work published in Carbon, explained the technology used. "Currently the metallic interconnects based on the metal copper used in integrated circuits suffer from poor electrical conduction and, the smaller they get in diameter, the more resistive they become. In addition to the electromigration issues, they dissipate so much heat energy that they can damage the surrounding devices. With our innovative technology, using a top-down heating methodology, we can precisely grow carbon nanotubes within interconnect vias at CMOS compatible temperatures."

The revolutionary technology developed with colleagues from the Advanced Technology Institute spin-out company, Surrey NanoSystems, has demonstrated growth of carbon nanotubes which have similar properties to those obtained at temperatures of 700șC, over 4" wafers, while maintaining the substrate below 350șC. "The system we have designed provides energy from the top via an infrared lamp array, whilst having several functional layers with carefully designed thicknesses which reflect this heat and/or act as thermal barriers for the substrate. The substrate itself sits on a water-cooled holder, to further protect it from harmful heating," Dr Stolojan added.

Speaking about the discovery, Professor Silva said: "This radical and novel approach to carbon nanotube growth combines a decade of top-flight research at the University's Advanced Technology Institute and delivers the type of innovation that UK industry can be proud of. This is an example of how private-public partnership can deliver real-world solutions to roadblocks in cutting-edge technologies. We are currently in talks with major semiconductor manufacturers to transfer this technology to the wider market and are continuing our internationally-leading research into novel contacting technologies."

####

For more information, please click here

Contacts:
Media Enquiries
Peter La, Press Office at the University of Surrey
Tel: +44 (0)1483 689191

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

Iranian Scientists Use MOFs to Eliminate Dye Pollutants January 29th, 2015

Made-in-Singapore rapid test kit detects dengue antibodies from saliva: IBN's MedTech innovation simplifies diagnosis of infectious diseases January 29th, 2015

'Bulletproof' battery: Kevlar membrane for safer, thinner lithium rechargeables January 28th, 2015

Spider electro-combs its sticky nano-filaments January 28th, 2015

Possible Futures

GS7 Graphene Sensor maybe Solution in Fight Against Cancer January 25th, 2015

Nanotechnology in Energy Applications Market Research Report 2014-2018: Radiant Insights, Inc January 15th, 2015

'Mind the gap' between atomically thin materials December 23rd, 2014

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Academic/Education

Rice's Naomi Halas to direct Smalley Institute: Optics pioneer will lead Rice's multidisciplinary science institute January 15th, 2015

SUNY Board Appoints Dr. Alain Kaloyeros as Founding President of SUNY Polytechnic Institute January 13th, 2015

CNSE's Smart System Technology & Commercialization Center Successfully Recertifies as ISO 9001:2008 January 12th, 2015

SUNY Poly Now Accepting Applications to the Colleges of Nanoscale Science and Engineering for Fall 2015: Full Scholarships Available to Incoming CNSE Students January 7th, 2015

Nanotubes/Buckyballs

Chromium-centered cycloparaphenylene rings for making functionalized nanocarbons January 26th, 2015

GS7 Graphene Sensor maybe Solution in Fight Against Cancer January 25th, 2015

Toyocolor to Launch New Carbon Nanotube Materials at nano tech 2015 January 24th, 2015

Carbon nanotube finding could lead to flexible electronics with longer battery life January 14th, 2015

Nanoelectronics

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

Rice-sized laser, powered one electron at a time, bodes well for quantum computing January 15th, 2015

Rapid journey through a crystal lattice: Researchers measure how fast electrons move through single atomic layers January 14th, 2015

A new step towards using graphene in electronic applications January 14th, 2015

Discoveries

Iranian Scientists Use MOFs to Eliminate Dye Pollutants January 29th, 2015

Made-in-Singapore rapid test kit detects dengue antibodies from saliva: IBN's MedTech innovation simplifies diagnosis of infectious diseases January 29th, 2015

Iranian Researchers Planning to Produce Edible Insulin January 28th, 2015

Nanoparticles that deliver oligonucleotide drugs into cells described in Nucleic Acid Therapeutics January 28th, 2015

Announcements

Iranian Scientists Use MOFs to Eliminate Dye Pollutants January 29th, 2015

Made-in-Singapore rapid test kit detects dengue antibodies from saliva: IBN's MedTech innovation simplifies diagnosis of infectious diseases January 29th, 2015

'Bulletproof' battery: Kevlar membrane for safer, thinner lithium rechargeables January 28th, 2015

Spider electro-combs its sticky nano-filaments January 28th, 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