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:11/26/2014)... , Nov. 26, 2014 Space is ... exploration of space requires astronauts to maintain consistently high ... success, and prevent potential errors and accidents. Despite the ... known about how cognition is affected by prolonged spaceflight, ... Now, Penn Medicine researchers are poised to help ...
(Date:11/26/2014)... The ETC (Emerging Technology Centers) ... announced today that applications for AccelerateBaltimore™ (AB) 2015 ... you have a big idea?,” asked ETC’s President ... about it. AccelerateBaltimore helps you and your big ... 13 weeks.” Interested game changers with “big ...
(Date:11/26/2014)... November 25, 2014 SonaCare Medical, ... Ultrasound (HIFU) devices, recently participated in the American ... Mass 360° .” Key opinion leaders in urology ... related to small renal masses while attendees had ... ablative technologies in hands-on labs. Attendees at the ...
(Date:11/26/2014)... November 25, 2014 The Pittcon marketing ... official conference and exposition mobile app, ... download in the App Store for iOS and Android ... resource tool before, during and after the event. It ... on exhibiting companies, technical sessions, Conferee Networking sessions and ...
Breaking Biology Technology:Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 2Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 4AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 3Pittcon Releases 2015 Mobile App 2
... June 23 Replidyne, Inc.,(Nasdaq: RDYN ) today ... with Asubio Pharma Co., Ltd. for faropenem medoxomil (faropenem).,In ... it has,terminated its supply agreement with Asubio Pharma Co., ... These decisions were made as a,result of the Company ...
... Web-based programs give sponsors easy-to-use tools to store, mine ... transfer knowledge base to ensure enrollment success, ... recruitment technology leader, announced the release of a new,product, ... support in-house recruitment capabilities for clinical,trial sponsors. The goal ...
... Ariz., June 23 MedPredict has published ... insight for pharma and,biotech companies hoping to ... The report, entitled "Thought Leader Insight & ... with a panel of,specialists in anesthesiology, psychiatry, ...
Cached Biology Technology:Replidyne Terminates Faropenem Agreements 2Replidyne Terminates Faropenem Agreements 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 2TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 4In Pain Market, Huge Unmet Needs, Tough Regulatory Environment Challenge Pharmaceutical Companies, According to MedPredict 2
(Date:11/4/2014)... --   3D scanner developer ... Fuel3D , a developer of 3D scanning solutions, today ... million (£4 million). This funding builds on the company,s initial ... paves the way for the commercial launch of the company,s ... was led by Chimera Partners and will be used to ...
(Date:11/4/2014)...   Neurotechnology , a provider of high-precision ... version of its fingerprint matching algorithm has achieved ... evaluation organized by NIST. The MINEX test measures ... 378 fingerprint standard template format. MINEX compliance is ... the United States and ...
(Date:11/3/2014)... of Colorado Cancer Center study published in ... Sciences describes the activity of a recently discovered ... or IL-37. It has been known to limit inflammation ... adaptive immune system: IL-37 inhibits the ability of the ... "Knowing this mechanism that underlies IL-37,s effect on the ...
Breaking Biology News(10 mins):Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3PNAS: From HIV to cancer, IL-37 regulates immune system 2
... 2009)A minimally invasive interventional radiology treatmentthat safely and ... herniated diskswill become standard in the United States ... the Society of Interventional Radiology,s 34th Annual Scientific ... examined just how ozone relieves the pain associated ...
... once a week displayed higher cognitive skills at the age of ... a study of nearly 4,000 teenagers published in the March issue ... a week was enough to increase combined, verbal and visuospatial intelligence ... more than once a week increased them by just under 11 ...
... strokes has taken a significant step forward today (09 ... brain tissue in rats. The team of scientists ... Council (BBSRC) and led by Dr Mike Modo of ... work, carried out at the Institute of Psychiatry and ...
Cached Biology News:Oh, my aching back: Give me a shot of ozone 2Oh, my aching back: Give me a shot of ozone 3Teenage boys who eat fish at least once a week achieve higher intelligence scores 2Teenage boys who eat fish at least once a week achieve higher intelligence scores 3Stem cells replace stroke-damaged tissue in rats 2
GLP-compliant, CLIA-certified DNA sequencing service. ASQ and SQA certified quality assurance staff. Auditors welcome....
Sequencing and primer design rolled into one. Just give us your clone and a reference sequence, and we'll do the rest. Single-strand or double-strand coverage. Guaranteed results....
... to human XAB2 (amino terminus) XAB2 ... its interaction with XPA. Immunoprecipitation experiments have ... interacts with the transcription-coupled repair-specific proteins CSA ... polymerase II. Microinjection experiments with XAB2 antibodies ...
... using advanced automated high throughput microplate processing equipment that dispenses ... accommodate virtually any lot size of the following formats (with ... 8 and 12 well strips, ... 384 well microplate, 1536 ...
Biology Products: