Navigation Links
In touch with molecules
Date:11/14/2009

This release is available in German.

The performance of modern electronics increases steadily on a fast pace thanks to the ongoing miniaturization of the utilized components. However, se-vere problems arise due to quantum-mechanical phenomena when conven-tional structures are simply made smaller and reach the nanometer scale. Therefore current research focuses on the so-called bottom-up approach: the engineering of functional structures with the smallest possible building blocks - single atoms and molecules.

For the first time a collaboration of researchers across Europe now achieved to investigate the electrical behaviour of only two C60 molecules touching each other. The molecule which is shaped like a football was discovered in 1985 and since then has attracted tremendous attention by researchers all over the world due to its unique chemistry and potential technological applications in nano-technology, materials science and electronics.

The findings of the researchers from institutes in Germany, France, Spain and Denmark were published in the latest issue of the prestigious magazine Physical Review Letters. A scanning tunnelling microscope (STM) was used to con-struct an ultra small electrical circuit comprised of only two C60 molecules, each just 1 nanometer in diameter. The researchers first picked up a single C60 mole-cule with the STM tip and thereafter approached a second molecule with a pre-cision of a few trillionths of meters. During this controlled approach the physi-cists were able to measure the electrical current that flows between the two molecules. Understanding this current, which depends critically on the distance between the molecules, is important for utilizing molecules in future electronics.

The investigation revealed that the electrical current does not flow easily be-tween the two touching C60 molecules the conductance is 100 times smaller than for a single molecule. This finding is crucial for future devices with closely packed molecules as it indicates that leakage currents between neighbouring circuits will be controllable.

These experimental findings are strongly supported by quantum-mechanical calculations which too come to the result of poor electrical conductivity between two C60 molecules.

The extreme precision of manipulation and control of single molecules pre-sented in this work open up a new route for exploring other promising mole-cules. The deeper understanding of electrical current on the nanometer scale is an essential step towards novel molecular nanoelectronics.


'/>"/>

Contact: Dr. Richard Berndt
berndt@physik.uni-kiel.de
49-431-880-3946
Kiel University
Source:Eurekalert

Related biology technology :

1. First Application to Fight High Cholesterol Launches on the iPhone and iPod Touch
2. National Ergonomics Expo Sees 86% On-Site Exhibitor Renewal Rate for 2009; New Products from Contour Design, Equipois, Goldtouch and Herman Miller Win 2008 NECE Attendees Choice New Product Awards
3. Video: OneTouch(R) Teams With Online Diabetes Community to Launch Global Diabetes Handprint Project
4. Touch Bionics unveils innovative partner and reimbursement programs at AOPA
5. Light touch: Controlling the behavior of quantum dots
6. Concentric Medical(R) Announces Co-Marketing Agreement With InTouch Health(R) to Advance Acute Ischemic Stroke Care
7. Touch Bionics a 2008 da Vinci Award winner
8. Touch Bionics wins the 2008 MacRobert Award - i-LIMB Hand recognised as the leading engineering innovation of the year
9. Touch Bionics acquires LIVINGSKIN
10. Touch Bionics appoints Head of Clinical Advocacy
11. Encision Launches Next Generation of EnTouch(R) Handles for Advanced Laparoscopic Procedures
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/11/2016)... HILDEN , Germany and ... QGEN ; Frankfurt Prime Standard: ... new QIAseq Targeted RNA Panels for gene expression profiling, ... next-generation sequencing (NGS). The panels enable researchers to select ... expression fold changes and discover interactions between genes, cellular ...
(Date:2/11/2016)... ... February 11, 2016 , ... ... cutting-edge information focused on the development and manufacture of biopharmaceuticals and therapeutics, ... sponsor of the 2016 BioProcess International Awards – Recognizing Excellence in the ...
(Date:2/11/2016)... ... February 11, 2016 , ... ... than 150 years, continues today to pursue the highest level of accuracy and ... instruments: the AR9 Refractometer and the AR5 Refractometer. Accurate, reliable and tough ...
(Date:2/10/2016)... Early-career researchers from Indonesia , ... and Yemen honored ... Indonesia , Nepal , Peru ... are being honored for their accomplishments in nutrition, psychiatry, biotechnology, women,s health, ... scientists who are pursuing careers in agriculture, biology and medicine in their ...
Breaking Biology Technology:
(Date:2/11/2016)... Calif. , Feb. 11, 2016  Vigilant Solutions announces ... LPR data are being used by Lee,s Summit ... including the recent location and arrest of a homicide suspect. ... Summit covers around 65 square miles and is ... Police Department has a single mobile license plate reader ...
(Date:2/8/2016)... Czech Republic , February 8, 2016 /PRNewswire/ ... EU-regulated global payment platform which presents innovation for ... Biometrics Authentication feature called VoiceKey. --> ... platform which presents innovation for clients, comfort and ... called VoiceKey. --> Worldcore ...
(Date:2/3/2016)... --> --> ... Fingerprint Identification System Market by Component (Hardware and Software), ... Finance, Government, Healthcare, and Transportation) and Geography - Global ... expected to be worth USD 8.49 Billion by 2020 ... 2020. The transformation and technology evolution from the manual ...
Breaking Biology News(10 mins):