Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

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-Universität 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

Feynman Prize Winners Announced! April 26th, 2015

New ASTM Standards Will Help Educate Present and Future Nanotechnology Workforces April 26th, 2015

Heat makes electrons’ spin in magnetic superconductors April 26th, 2015

QD Vision Wins 2015 Bronze Edison Award for Color IQ™ Quantum Dot Technology April 26th, 2015

Possible Futures

Printing Silicon on Paper, with Lasers April 21st, 2015

A glass fiber that brings light to a standstill: By coupling photons to atoms, light in a glass fiber can be slowed down to the speed of an express train; for a short while it can even be brought to a complete stop April 9th, 2015

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Academic/Education

SEFCU, SUNY Poly CNSE Announce Winning Student-Led Teams in the 6th Annual $500,000 New York Business Plan Competition April 25th, 2015

Iranian Female Professor Awarded UNESCO Medal in Nanoscience April 20th, 2015

JPK reports on the use of the NanoWizard® 3 AFM system at the Hebrew University of Jerusalem April 14th, 2015

UK National Graphene Institute Selects Bruker as Official Partner: World-Leading Graphene Research Facility Purchases Multiple Bruker AFMs April 7th, 2015

Molecular Machines

UCLA nanoscientists are first to model atomic structures of three bacterial nanomachines: Cryo electron microscope enables scientists to explore the frontiers of targeted antibiotics April 21st, 2015

Advances in molecular electronics: Lights on -- molecule on: Researchers from Dresden and Konstanz succeed in light-controlled molecule switching April 20th, 2015

Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015

Tiny bio-robot is a germ suited-up with graphene quantum dots March 24th, 2015

Nanotubes/Buckyballs/Fullerenes

SouthWest NanoTechnologies CEO Dave Arthur to Speak at NanoBCA DC Roundtable on May 19 in Washington DC April 20th, 2015

How to maximize the superconducting critical temperature in a molecular superconductor: International team led by Tohoku University opens new route for discovering high Tc superconductors April 19th, 2015

Nanotubes with two walls have singular qualities: Rice University lab calculates unique electronic qualities of double-walled carbon nanotubes April 16th, 2015

MIT sensor detects spoiled meat: Tiny device could be incorporated into 'smart packaging' to improve food safety April 15th, 2015

Nanoelectronics

Surface matters: Huge reduction of heat conduction observed in flat silicon channels April 23rd, 2015

New class of 3D-printed aerogels improve energy storage April 22nd, 2015

‘Oxford Instruments Young Nanoscientist India Award 2015’ to Prof. Arindam Ghosh April 20th, 2015

Advances in molecular electronics: Lights on -- molecule on: Researchers from Dresden and Konstanz succeed in light-controlled molecule switching April 20th, 2015

Announcements

Feynman Prize Winners Announced! April 26th, 2015

New ASTM Standards Will Help Educate Present and Future Nanotechnology Workforces April 26th, 2015

Heat makes electrons’ spin in magnetic superconductors April 26th, 2015

QD Vision Wins 2015 Bronze Edison Award for Color IQ™ Quantum Dot Technology April 26th, 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