Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Team grows nanotubes in one-step process: Discovery may lead to new applications, including biosensors and memory cells

TEAM NANOTUBE - Members of UNL’s Laser Assisted Nano-Technology Lab team who created self-assembling carbon nanotubes are (from left): professor Yongfeng Lu; post-doctoral researcher Yunshen Zhou; and graduate students Wei Xiong and Masoud Mahjouri-Samani. Photo by Greg Nathan/University Communications.
TEAM NANOTUBE - Members of UNL’s Laser Assisted Nano-Technology Lab team who created self-assembling carbon nanotubes are (from left): professor Yongfeng Lu; post-doctoral researcher Yunshen Zhou; and graduate students Wei Xiong and Masoud Mahjouri-Samani. Photo by Greg Nathan/University Communications.

Abstract:
Scientists and engineers the world over have thought for years that the next generation of smaller, more-efficient electronic and photonic devices could be based on the use of carbon nanotubes, structures 10,000 times thinner than a human hair but with tremendous potential.

Team grows nanotubes in one-step process: Discovery may lead to new applications, including biosensors and memory cells

Lincoln, NE | Posted on February 26th, 2009

Using a process based on optical near-field effects, Lu and his team in UNL's Laser Assisted Nano-Engineering Lab created nanoscale devices based on connecting sharp-tipped electrodes with individually self-aligned carbon nanotubes.

Previous efforts in this area by other research groups tried to use advanced instrumentation to manipulate carbon nanotubes after growth. But Lu said that approach is only good for research purposes because it's time consuming and expensive.

"With our method, there's no requirement for expensive instrumentation and no requirement for tedious processes. It's a one-step process," he said. "We call it 'self-aligning growth.' The carbon nanotubes ‘know' where to start growth.

"In previous efforts, they could only manipulate carbon nanotubes one piece at a time, so they had to align the carbon nanotubes one by one. For our approach using optical near-field effects, all locations with sharp tips can accommodate carbon nanotube growth. That means we can make multiple carbon nanotubes at a time and all of them will be self-aligned."

Nevertheless, the UNL team has not yet been able to produce large numbers of self-aligned carbon nanotubes, but Lu said he and his team see potential for significant expansion that could lead to new applications in devices such as biosensors, light emitters, photon sensors, tiny molecular motors and memory cells.

"We have shown that we can use optical near-field effects to control growth for a small amount of carbon nanotubes," said Lu, Lott professor of electrical engineering at UNL. "We want to make this process scalable so it can be used to make large numbers at a time so we can make a circuit or a system by this approach."

The research was the cover story for the Jan. 14 issue of Nanotechnology, a leading international journal published by the Institute of Physics in the United Kingdom. The research was supported by a grant from the National Science Foundation. Initial funding was provided by the Nebraska Research Initiative.

- Story by By Tom Simons, University Communications

####

For more information, please click here

Copyright © University of Nebraska-Lincoln

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

Sunblock poses potential hazard to sea life August 20th, 2014

Rice physicist emerges as leader in quantum materials research: Nevidomskyy wins both NSF CAREER Award and Cottrell Scholar Award August 20th, 2014

Graphene may be key to leap in supercapacitor performance August 20th, 2014

Newly-Developed Nanobiosensor Quickly Diagnoses Cancer August 20th, 2014

Chip Technology

Electrical engineers take major step toward photonic circuits: Team invents non-metallic metamaterial that enables them to 'compress' and contain light August 19th, 2014

Promising Ferroelectric Materials Suffer From Unexpected Electric Polarizations: Brookhaven Lab scientists find surprising locked charge polarizations that impede performance in next-gen materials that could otherwise revolutionize data-driven devices August 18th, 2014

AI Technology (AIT) Introduces Novel High Temperature Large Area Underfill with Proven Stress Absorption August 15th, 2014

Iranian Scientists Stabilize Protein on Highly Stable Electrode Surface August 14th, 2014

Memory Technology

Promising Ferroelectric Materials Suffer From Unexpected Electric Polarizations: Brookhaven Lab scientists find surprising locked charge polarizations that impede performance in next-gen materials that could otherwise revolutionize data-driven devices August 18th, 2014

Can our computers continue to get smaller and more powerful? University of Michigan computer scientist reviews frontier technologies to determine fundamental limits of computer scaling August 13th, 2014

An Inkjet-Printed Field-Effect Transistor for Label-Free Biosensing August 11th, 2014

Rice's silicon oxide memories catch manufacturers' eye: Use of porous silicon oxide reduces forming voltage, improves manufacturability July 10th, 2014

Nanoelectronics

A*STAR and industry form S$200M semiconductor R&D July 25th, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

3-D nanostructure could benefit nanoelectronics, gas storage: Rice U. researchers predict functional advantages of 3-D boron nitride July 15th, 2014

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Discoveries

Sunblock poses potential hazard to sea life August 20th, 2014

Rice physicist emerges as leader in quantum materials research: Nevidomskyy wins both NSF CAREER Award and Cottrell Scholar Award August 20th, 2014

Newly-Developed Nanobiosensor Quickly Diagnoses Cancer August 20th, 2014

Ultrasonic Waves Applied in Production of Graphene Nanosheets August 20th, 2014

Announcements

Rice physicist emerges as leader in quantum materials research: Nevidomskyy wins both NSF CAREER Award and Cottrell Scholar Award August 20th, 2014

Graphene may be key to leap in supercapacitor performance August 20th, 2014

Newly-Developed Nanobiosensor Quickly Diagnoses Cancer August 20th, 2014

Ultrasonic Waves Applied in Production of Graphene Nanosheets August 20th, 2014

Photonics/Optics/Lasers

Electrical engineers take major step toward photonic circuits: Team invents non-metallic metamaterial that enables them to 'compress' and contain light August 19th, 2014

Laser makes microscopes way cooler: Cooling a nanowire probe with a laser could lead to substantial improvements in the sensitivity of atomic force probe microscopes August 15th, 2014

Molecular engineers record an electron's quantum behavior August 14th, 2014

Harry Atwater and Albert Polman receive the Julius Springer Prize for Applied Physics 2014: Scientists honored for their pioneering achievements in plasmonics and nanophotonics August 8th, 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