Navigation Links
Researchers discover a potential on-off switch for nanoelectronics
Date:3/3/2009

Berkeley, CA - As electronic circuits shrink from finely etched lines in silicon wafers to nearly elusive proportions, researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and Columbia University are studying how electrons flow through a molecular junctiona nanometer scale circuit element that contacts gold atoms with a single molecule. Their findings reveal the electrical resistance through this junction can be turned 'on' and 'off' simply by pushing and pulling the junctiona feature that could be used as a switch in nanoscale electronic devices.

"To design circuit elements at the molecular scale, we need to understand how the intrinsic properties of a molecule or junction are actually connected to its measured resistance," said Jeff Neaton, Facility Director of the Theory of Nanostructured Materials Facility in the Molecular Foundry, a U.S. Department of Energy User Facility located at Berkeley Lab that provides support to nanoscience researchers around the world. "Knowing where each and every atom is in a single-molecule junction is simply beyond what's possible with experiments at this stage. For these sub-nanometer scale junctionsjust a handful of atomstheory can be valuable in helping interpret and understand resistance measurements."

In traditional electronic devices, charge-carrying electrons diffuse through circuits in a well-understood fashion, gaining or losing energy through transactions with impurities or other particles they encounter. Electrons at the nanoscale, however, can travel by a mechanism called quantum tunneling in which, due to the small length scales involved, it becomes possible for a particle to disappear through an energy barrier and suddenly appear on the other side, without expending energy. Tracking such 'tunneling' of electrons through individual molecules in nanoscale devices has proven difficult.

"For more than a decade, researchers have been 'wiring up
'/>"/>

Contact: Aditi Risbud
ASRisbud@lbl.gov
510-486-4861
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers discover a potential on-off switch for nanoelectronics
(Date:1/15/2014)... Ill. , Jan. 15, 2014  Bill Jacobs Automotive, a ... , is teaming up with the Heartland Blood Center and ... blood drive. The drive takes place Saturday, Jan. 18 at ... - 2 p.m. (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  ...
(Date:1/15/2014)... 2014   Niagara Thermal Products is proud to ... Technologies LLC ("B3") as the critical thermal component supplier ... the Army Corps of Engineers.  B3 has developed the ... contaminants and destroys VOCs and other chemical pollutants, allergens ...
(Date:1/15/2014)... Cynvenio, a cancer diagnostics company focused ... analysis of tumor cells in the bloodstream, today announced ... decision support application powered by CollabRx, Inc. , ... test, Therapy Finder will provide breast cancer patients and ...
(Date:1/15/2014)... RedBrick Health , a fast-growing leader in consumer health ... EmblemHealth , the New York -based ... RedBrick Compass health assessment, combined with the RedBrick Journeys ... EmblemHealth is among the first health plans in the ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3
... 18 Opsona Therapeutics, a,biotechnology company focused on ... diseases, today announced the,completion of an EUR18M ($23M) ... expand both at an operational and clinical level. ... and Seroba Kernel,Life Sciences all participated in the ...
... Forschungsgemeinschaft (DFG, German Research Foundation) has announced that ... high-risk research projects. The Joint Committee of Germany,s ... approved funding for two new Reinhart Koselleck Projects. ... Professor Reinhard Drner, an atomic physicist from Frankfurt, ...
... found that tiny nanoparticles could be twice as likely ... liquids than previously believed. This opens up a ... in living cells, polymer composites, and high-tech foams, ... ways of further artificially enhancing this new found sticking ...
Cached Biology Technology:Opsona Therapeutics Closes EUR18M Funding 2Opsona Therapeutics Closes EUR18M Funding 3Opsona Therapeutics Closes EUR18M Funding 4Encouraging high-risk research: DFG approves funding for 2 new Reinhart Koselleck projects 2Encouraging high-risk research: DFG approves funding for 2 new Reinhart Koselleck projects 3Nanoparticles double their chances of getting into sticky situations 2
(Date:4/17/2014)... and pathogens that devastate honeybees in Europe, Asia and ... do not appear to be impacting native honeybee populations ... researchers., The invasive pests include including Nosema microsporidia ... honeybees appear to be resilient to these invasive pests, ... control pests in Europe, Asia and the United States ...
(Date:4/17/2014)... many serious conditions such as heart disease, epilepsy and ... therapies. Unfortunately, there is still much scientists do not ... and unexpected insight into the structure of sodium channels ... - which are responsible for ,fine-tuning, the activity of ... recent edition of the Journal of Biological Chemistry ...
(Date:4/17/2014)... researchers have detected new early-warning signs of the potential ... have far-reaching implications for the diagnosis and treatment of ... million Americans. , "We had not expected to see ... stages," said Ann Elsner, professor and associate dean in ... the study. "We set out to study the early ...
Breaking Biology News(10 mins):East African honeybees are safe from invasive pests… for now 2East African honeybees are safe from invasive pests… for now 3Structure of sodium channels different than previously believed 2New technique detects microscopic diabetes-related eye damage 2New technique detects microscopic diabetes-related eye damage 3
... international consortium of 15 institutions from 12 European ... Norway, Romania, Sweden, The Netherlands, UK) has started ... The name stands for ,Biodiversity and Ecosystem Services: ... the effectiveness of arguments used for biodiversity protection ...
... the Arctic Ocean, the frozen soils within this region keep ... the Earth,s atmosphere. This sequestered carbon is more than 250 ... United States in the year 2009. As global temperatures slowly ... upon the carbon cycle when the permafrost thaws and releases ...
... metal-organic frameworks, with their nanoscopic pores and incredibly ... gas storage. But with millions of different structures ... University research team has developed a computational method ... in the discovery process. The new algorithm automatically ...
Cached Biology News:Preparing for a thaw: How Arctic microbes respond to a warming world 2Preparing for a thaw: How Arctic microbes respond to a warming world 3More promising natural gas storage? 2