Navigation Links
Molecular graphene heralds new era of 'designer electrons'
Date:3/14/2012

Menlo Park, Calif. Researchers from Stanford University and the U.S. Department of Energy's SLAC National Accelerator Laboratory have created the first-ever system of "designer electrons" exotic variants of ordinary electrons with tunable properties that may ultimately lead to new types of materials and devices.

"The behavior of electrons in materials is at the heart of essentially all of today's technologies," said Hari Manoharan, associate professor of physics at Stanford and a member of SLAC's Stanford Institute for Materials and Energy Sciences, who led the research. "We're now able to tune the fundamental properties of electrons so they behave in ways rarely seen in ordinary materials."

Their first examples, reported today in Nature, were hand-crafted, honeycomb-shaped structures inspired by graphene, a pure form of carbon that has been widely heralded for its potential in future electronics. Initially, the electrons in this structure had graphene-like properties; for example, unlike ordinary electrons, they had no mass and traveled as if they were moving at the speed of light in a vacuum. But researchers were then able to tune these electrons in ways that are difficult to do in real graphene.

To make the structure, which Manoharan calls molecular graphene, the scientists use a scanning tunneling microscope to place individual carbon monoxide molecules on a perfectly smooth copper surface. The carbon monoxide repels the free-flowing electrons on the copper surface and forces them into a honeycomb pattern, where they behave like graphene electrons.

To tune the electrons' properties, the researchers repositioned the carbon monoxide molecules on the surface; this changed the symmetry of the electron flow. In some configurations, electrons acted as if they had been exposed to a magnetic or electric field. In others, researchers were able to finely tune the density of electrons on the surface by introducing defects
'/>"/>

Contact: Andy Freeberg
afreeberg@slac.stanford.edu
650-926-4359
DOE/SLAC National Accelerator Laboratory
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Molecular Detection Inc. Completes $1.5 Million Financing to Advance New Tests for Sepsis and GI Disorders
2. New England Biolabs Signs Agreement with Synthetic Genomics Inc. to Launch Gibson Assembly™ Master Mix for Molecular and Synthetic Biology Applications
3. Accelerate Brain Cancer Cure and Exosome Diagnostics Collaborate to Advance Clinical Studies of Exosome Biofluid Molecular Diagnostics Technology in Brain Cancer
4. Life Technologies Partners With DaAn Gene to Develop and Commercialize Molecular Diagnostic Assays in China
5. Amsterdam Molecular Therapeutics Receives US Orphan Designation for Hemophilia B Gene Therapy
6. Amsterdam Molecular Therapeutics Announces € 2.5 Million Equity Raise
7. The art of molecular carpet-weaving
8. Quanterix Develops Microfluidic Consumable That Will Enable Next Generation Molecular Diagnostic Systems based on Single Molecule Array Technology
9. Amsterdam Molecular Therapeutics Announces Negative Equity Position
10. Why Medicare Carrier Proposes Major Changes in the Handling of Code Stacked Molecular Test Claims is Topic of December 20 Audio Conference
11. Chemists become molecular sculptors, synthesizing tiny, molecular traps
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Molecular graphene heralds new era of 'designer electrons'
(Date:7/24/2015)... , July 24, 2015 Origin Agritech Limited (NASDAQ ... crop seeds in China , today announced ... fiscal year 2015 ended June 30, 2015, before the market ... will host a teleconference on August 5th, 2015, at 9:00 ... time to discuss the results. To participate in the call, ...
(Date:7/24/2015)... , Adds integrated small molecule ... offering for chronic kidney disease and oncology patients ... and dermatology , Increases group revenue and earnings ... Company"), a leading China -based biotechnology ... products, today announced that it has acquired the entire ...
(Date:7/23/2015)... ANGELES , July 23, 2015 ImmunoCellular Therapeutics, ... to report financial results for the second quarter 2015 on ... a conference call and webcast on that day at 5:00 ... and provide a business update. The call will be hosted ...   , , , LIVE CALL: ...
(Date:7/23/2015)... ... ... Science and technology continue to improve all aspects of brain tumor care –from ... Chang, MD, director of the Division of Neuro-oncology at UC San Francisco. , Dr. ... development of new treatments and advancing strategies to minimize treatment side effects at the ...
Breaking Biology Technology:Origin Agritech Limited to Announce Third Quarter Fiscal 2015 Unaudited Financial Results on August 5th, 2015 2Origin Agritech Limited to Announce Third Quarter Fiscal 2015 Unaudited Financial Results on August 5th, 2015 33SBio Acquires Zhejiang Wansheng Pharmaceutical 23SBio Acquires Zhejiang Wansheng Pharmaceutical 33SBio Acquires Zhejiang Wansheng Pharmaceutical 4ImmunoCellular Therapeutics to Report Second Quarter 2015 Financial Results on August 6, 2015 2Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 2Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 3
... of global climate change and population growth call for sweeping ... warns a group of prestigious scientists, including an expert in ... research team, led by Nina Federoff, science and technology adviser ... a "critical need to get beyond popular biases against the ...
... process that produces both n-type and p-type doping ... the promising material for future electronic devices. ... increase conductivity in graphene nanoribbons used for interconnects. ... to graphene and then exposing it to electron-beam ...
... , CINCINNATI , Feb. 11 Kendle ... quarter and full-year 2009 financial results after the market closes on ... call and simultaneous webcast on Thursday, Feb. 25 at ... , Conference Call Instructions , To participate in the ...
Cached Biology Technology:Dramatic changes in agriculture needed as world warms and grows, researchers say 2Single-step technique produces both p-type and n-type doping for future graphene devices 2Single-step technique produces both p-type and n-type doping for future graphene devices 3Kendle Announces Details Regarding Fourth Quarter and Full-Year 2009 Earnings Conference Call and Webcast 2Kendle Announces Details Regarding Fourth Quarter and Full-Year 2009 Earnings Conference Call and Webcast 3
(Date:7/23/2015)... Research and Markets ( http://www.researchandmarkets.com/research/rzzp3v/global_outlook_of ) ... Outlook of the Biometrics Industry 2015 " ... global biometrics market is likely to witness significant ... to the uptake of multiple technologies available. The ... the growth of biometrics in existing applications as ...
(Date:7/20/2015)... DENVER , July 20, 2015  Acuity ... Mobility Report: The Convergence of Commerce and Privacy" ... billion mobile biometric apps will be downloaded to ... users. The mobile biometrics market is projected to ... app revenue during the seven-year forecast period.    ...
(Date:7/9/2015)... , July 07, 2015 ... the addition of the "Biometrics for Banking; ... 2015-2020" report to their offering. ... contributor to this growth and the forecast is ... in revenue for companies involved in delivering biometric ...
Breaking Biology News(10 mins):Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... very fatty beans from which oil is refined into biodiesel in ... University of Southern Denmark along with researchers from Brazil have succeeded ... be possible to alter the bean,s structure in order to get ... however shows that this may not be an easy task. ...
... researchers has used next generation sequencing to identify ... pediatric speech disorder. The findings are published in ... Journal of Neurodevelopmental Disorders http://www.jneurodevdisorders.com/content/5/1/29 . ... rare, severe speech disorder that in some patients ...
... special issue of the International Journal of Global Warming ... loss and damage from the perspective of affected people in ... how climatic stressors affect communities, what measures households take to ... they are unable to adjust sufficiently. The guest-editors, Kees ...
Cached Biology News:Proteins in one of the world's main biodiesel plants have been mapped -- and it does not look good 2Loss and damage from climate change 2Loss and damage from climate change 3
... arrays have been developed for affinity ... A variety of ProteinChip chemical surfaces ... to their unique biochemical properties. Each ... side-by-side sample comparison, and the chips ...
Thermal printer paper is used with the thermal printer for the VersaFluor fluorometry systems. Supplied as 10 rolls....
The thermal printer, 120 V, is used to record fluorescence data acquired with the VersaFluor fluorometry systems. The printer includes a cable and power adaptor....
... Leu-CMK FLISP Assay with SR-101 ... Em=620 nm) • Accurately measure serine ... or permeabilization • B-Bridge's FLISP Kits ... serine proteases (FLISPs) to measure chymotrypsin-like ...
Biology Products: