Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Metal sheets with DNA framework could enable future nanocircuits

Michael Campolongo/Luo Labs
A schematic drawing of gold nanoparticles held together by tangled, hairlike strands of DNA. The thin sheets could prove useful in electronic applications.
Michael Campolongo/Luo Labs
A schematic drawing of gold nanoparticles held together by tangled, hairlike strands of DNA. The thin sheets could prove useful in electronic applications.

Abstract:
Using DNA not as a genetic material but as a structural support, Cornell researchers have created thin sheets of gold nanoparticles held together by strands of DNA. The work could prove useful for making thin transistors or other electronic devices.

Metal sheets with DNA framework could enable future nanocircuits

Ithaca, NY | Posted on May 20th, 2009

The research describing the creation of suspended, free-standing sheets of gold nanoparticles only 20 nanometers thick and held together by tangled, hairlike strands of DNA, is detailed in the May 4 Advance Online Publication of Nature Materials. The work was led by Dan Luo, associate professor of biological engineering, and the team included first author and postdoctoral associate Wenlong Cheng;Christopher Umbach, assistant professor of materials sciences and engineering; and David Muller, associate professor of applied and engineering physics.

To make the thin, ordered sheets, called superlattices, the researchers attached gold nanoparticles to single-stranded DNA and submerged them in a water-based solution. They then deposited droplets of the solution onto a holey silicon substrate and allowed the water to evaporate.

What was left were thin sheets of gold nanoparticles, suspended in place by the DNA strands. What's more, Luo explained, the researchers demonstrated easy control of the sheets' mechanical properties by changing the lengths of the DNA or the distance between nanoparticles.

"We hope this can contribute to development of future nanocircuits," Luo said.

The work was supported by the New York State Office of Science, Technology and Academic Research, the National Science Foundation and Cornell.

####

For more information, please click here

Contacts:
Blaine Friedlander
(607) 254-8093


Cornell Chronicle:
Anne Ju
(607) 255-9735

Copyright © Cornell University

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

Promising use of nanodiamonds in delivering cancer drug to kill cancer stem cells: NUS study shows that delivery of Epirubicin by nanodiamonds resulted in a normally lethal dosage of Epirubicin becoming a safe and effective dosage for treatment of liver cancer January 26th, 2015

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

NANOPOSTER 2015 - 5th Virtual Nanotechnology Conference - call for abstracts January 24th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

Chip Technology

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

New method to generate arbitrary optical pulses January 21st, 2015

New signal amplification process set to transform communications, imaging, computing: UC San Diego researchers discover a mechanism to amplify signals in optoelectronic systems that is far more efficient than standard processes January 21st, 2015

Solving an organic semiconductor mystery: Berkeley Lab researchers uncover hidden structures in domain interfaces that hamper performance January 16th, 2015

Nanoelectronics

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

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

Discoveries

Promising use of nanodiamonds in delivering cancer drug to kill cancer stem cells: NUS study shows that delivery of Epirubicin by nanodiamonds resulted in a normally lethal dosage of Epirubicin becoming a safe and effective dosage for treatment of liver cancer January 26th, 2015

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

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

Announcements

Promising use of nanodiamonds in delivering cancer drug to kill cancer stem cells: NUS study shows that delivery of Epirubicin by nanodiamonds resulted in a normally lethal dosage of Epirubicin becoming a safe and effective dosage for treatment of liver cancer January 26th, 2015

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

NANOPOSTER 2015 - 5th Virtual Nanotechnology Conference - call for abstracts January 24th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

Nanobiotechnology

DNA 'glue' could someday be used to build tissues, organs January 14th, 2015

Photonic crystal nanolaser biosensor simplifies DNA detection: New device offers a simpler and potentially less expensive way to detect DNA and other biomolecules through changes in surface charge density or solution pH January 13th, 2015

Determination of Critical Force, Time for Manipulation of Biological Nanoparticles January 7th, 2015

DNA Origami Could Lead to Nano “Transformers” for Biomedical Applications: Tiny hinges and pistons hint at possible complexity of future nano-robots January 5th, 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