Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Five atoms for good contact

Graphical depiction of a copper tip with a carbon molecule (C60) attached to the end. The molecule is hovering over a metal surface on which there are five contacts which have been constructed atom by atom. Image: Schull
Graphical depiction of a copper tip with a carbon molecule (C60) attached to the end. The molecule is hovering over a metal surface on which there are five contacts which have been constructed atom by atom. Image: Schull

Abstract:
A team of scientists headed by Kiel University physicist studies molecules as conductors

Five atoms for good contact

Kiel, Germany | Posted on November 26th, 2010

An international research group under the leadership of Kiel physicist, Richard Berndt, has answered two of the key issues in molecular electronics, namely, how contact to an individual molecule can be created in a controlled manner, and how the type of contact can affect the electronic characteristics. The researchers from Germany, France and Spain published their findings 14 November 2010, in the online advance edition of Nature Nanotechnology.

The physicists constructed a row of contact areas, each consisting of only a few atoms, on a copper surface. They used a pointed copper tip to introduce a single carbon molecule (C60) to every one of these ultra small contacts and determined the electrical resistance of each. "Initially, the connection between the molecule and the surface consisted of just one single atom", explained Dr. Guillaume Schull, who until recently used to carry out research at Kiel University (Christian-Albrechts-Universitšt zu Kiel (CAU)). "By gradually increasing the number of contact atoms, the electricity conducted through the molecule could be multiplied more than tenfold for the time being." In the case of the C60-molecules, however, this positive trend reached a limit: "As from five contact atoms, the molecule itself starts to act as a bottleneck for the electricity flow", according to Professor Berndt.

While molecular machines exist for almost every technical function imaginable in living nature, the corresponding technology is still in its infancy. Methods have been sought for many years on how to build electrical switches from individual molecules, which could enable electronic components to become even smaller in the future. The research findings should help to better understand the characteristics and processes on the single molecule scale. The knowledge of conductible molecules will be incorporated in the development of electronic components based on organic materials.

Kiel University (CAU) has proven international expertise as a North German research university in the field of Nanoscience. The members of the Collaborative Research Centre 677 "Function by Switching", of which Professor Berndt is also a member, study the field of molecular nanoscience. Furthermore, the CAU is applying for the current round of the Excellence Initiative with the nanoscience cluster of "Materials for Life". Within the framework of the cluster, Kiel scientists wish to research new, intelligent materials for medical therapy.

Original publication:

G. Schull, Th. Frederiksen, A. Arnau, D. Sanchez, R. Berndt: Atomic-scale engineering of electrodes for single-molecule contacts.

Nature Nanotechnology 2010, DOI: 10.1038/NNANO.2010.215

####

For more information, please click here

Contacts:
Prof. Dr. Richard Berndt
Kiel University, Institute of Experimental and Applied Sciences
Tel.: +49(0)431/880-3946 or -2478

Copyright © University of Kiel

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

Eric Berger Wins the National Space Society's 2017 Space Pioneer Award for Mass Media January 19th, 2017

Nanometrics to Announce Fourth Quarter and Full Year Financial Results on February 7, 2017 January 19th, 2017

'5-D protein fingerprinting' could give insights into Alzheimer's, Parkinson's January 19th, 2017

Strength of hair inspires new materials for body armor January 18th, 2017

Possible Futures

'5-D protein fingerprinting' could give insights into Alzheimer's, Parkinson's January 19th, 2017

Strength of hair inspires new materials for body armor January 18th, 2017

Self-assembling particles brighten future of LED lighting January 18th, 2017

Dressing a metal in various colors: DGIST research developed a technology to coat metal with several nanometers of semiconducting materials January 17th, 2017

Academic/Education

Oxford Nanoimaging report on how the Nanoimager, a desktop microscope delivering single molecule, super-resolution performance, is being applied at the MRC Centre for Molecular Bacteriology & Infection November 22nd, 2016

The University of Applied Sciences in Upper Austria uses Deben tensile stages as an integral part of their computed tomography research and testing facility October 18th, 2016

Enterprise In Space Partners with Sketchfab and 3D Hubs for NewSpace Education October 13th, 2016

New Agricultural Research Center Debuts at UCF October 12th, 2016

Molecular Machines

Micro-bubbles make big impact: Research team develops new ultrasound-powered actuator to develop micro robot November 25th, 2016

Scientists come up with light-driven motors to power nanorobots of the future: Researchers from Russia and Ukraine propose a nanosized motor controlled by a laser with potential applications across the natural sciences and medicine November 11th, 2016

HKU chemists develop world's first light-seeking synthetic Nanorobot November 9th, 2016

Light drives single-molecule nanoroadsters: Rice University scientists part of international team demonstrating untethered 3-wheelers November 4th, 2016

Nanotubes/Buckyballs/Fullerenes

Captured on video: DNA nanotubes build a bridge between 2 molecular posts: Research may lead to new lines of direct communication with cells January 9th, 2017

Nano-chimneys can cool circuits: Rice University scientists calculate tweaks to graphene would form phonon-friendly cones January 4th, 2017

WPI researchers build liquid biopsy chip that detects metastatic cancer cells in blood December 15th, 2016

Infrared instrumentation leader secures exclusive use of Vantablack coating December 5th, 2016

Nanoelectronics

Nano-chimneys can cool circuits: Rice University scientists calculate tweaks to graphene would form phonon-friendly cones January 4th, 2017

Advance in intense pulsed light sintering opens door to improved electronics manufacturing December 23rd, 2016

Fast track control accelerates switching of quantum bits December 16th, 2016

GLOBALFOUNDRIES Demonstrates Industry-Leading 56Gbps Long-Reach SerDes on Advanced 14nm FinFET Process Technology: Proven ASIC IP solution will enable significant performance and power efficiency improvements for next-generation high-speed applications December 13th, 2016

Announcements

Eric Berger Wins the National Space Society's 2017 Space Pioneer Award for Mass Media January 19th, 2017

Nanometrics to Announce Fourth Quarter and Full Year Financial Results on February 7, 2017 January 19th, 2017

'5-D protein fingerprinting' could give insights into Alzheimer's, Parkinson's January 19th, 2017

Strength of hair inspires new materials for body armor January 18th, 2017

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