Navigation Links
Single-step technique produces both p-type and n-type doping for future graphene devices
Date:2/11/2010

g doses of electron-beam radiation and then studied how it influenced the properties of carriers in the graphene lattice," Murali said. "The e-beam gave us a fine range of control that could be valuable for fabricating nanoscale devices. We can use an electron beam with a diameter of four or five nanometers that allows very precise doping patterns."

Electronic measurements showed that a graphene p-n junction created by the new technique had large energy separations, indicating strong doping effects, he added.

Researchers elsewhere have demonstrated graphene doping using a variety of processes including soaking the material in various solutions and exposing it to a variety of gases. The Georgia Tech process is believed to be the first to provide both electron and hole doping from a single dopant material.

Doping processes used for graphene are likely to be significantly different from those established for silicon use, Murali said. In silicon, the doping step substitutes atoms of a different material for silicon atoms in the material's lattice.

In the new single-step process for graphene, the doping is believed to introduce atoms of hydrogen and oxygen in the vicinity of the carbon lattice. The oxygen and hydrogen don't replace carbon atoms, but instead occupy locations atop the lattice structure.

"Energy applied to the SOG breaks chemical bonds and releases hydrogen and oxygen which bond with the carbon lattice," Murali said. "A high e-beam energy converts the whole SOG structure to more of a network, and then you have more oxygen than hydrogen, resulting in a p-type doping."

In volume manufacturing, the electron beam radiation would likely be replaced by a conventional lithography process, Murali said. Varying the reflectance or transmission of the mask set would control the amount of radiation reaching the SOG, and that would determine whether n-type or p-type areas are created.

"Making ev
'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. New lab-on-a-chip technique developed at U of T
2. Leading Cardiovascular Surgeons Gather from Around the World to Share Ross Procedure Survival Data, Techniques at 2nd Annual Summit
3. Graphitic memory techniques advance at Rice
4. Single-molecule technique captures calcium sensor calmodulin in action
5. New MRI technique could mean fewer breast biopsies in high-risk women
6. New statistical technique improves precision of nanotechnology data
7. Five Cord Blood Transplant Centers in Catalonia and Valencia Join a Study to Test a New Technique to Treat Leukemia and Lymphoma
8. Secret of sandcastle construction could help revive ancient building technique, researchers say
9. Quest Diagnostics to Present Genomic Studies Related to New Testing Techniques for Leukemia and Prostate Cancer at 2009 ASCO Meeting
10. Gender-Selection Technique Embraced for Hopeful Parents
11. Novel CU-Boulder technique shrinks size of nanotechnology circuitry
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Single-step technique produces both p-type and n-type doping for future graphene devices
(Date:7/3/2015)... (PRWEB) , ... July 03, 2015 , ... ... highly-regarded by Fortune 500 companies and professional service industries alike-- typically known for ... make clients laugh, honor a good cause and break from their day jobs. ...
(Date:7/3/2015)...  Pomerantz LLP announces that a class action lawsuit ... the "Company")(NYSE: PBYI ) and certain of its ... Court, Central District of California , ... class consisting of all persons or entities who purchased ... 2015 inclusive (the "Class Period").  This class action seeks ...
(Date:7/2/2015)... , July 2, 2015  Spherix Incorporated (Nasdaq: ... the fostering and monetization of intellectual property, today announced ... Spherix Incorporated v. Verizon Services Corp. et al. ... Court for the Eastern District of Virginia ... July 1, 2015 interpreting certain key claims in favor ...
(Date:7/1/2015)... CA (PRWEB) , ... July 01, 2015 , ... It ... brain injury (TBI) using single photon emission computed tomography (SPECT) according to ... The study, which examined over 20,000 brain scans and is believed to be the ...
Breaking Biology Technology:The Alexander Group Declares Their Independence with a Bit of Levity 2SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 2SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 3SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 4Spherix Issues A Litigation Update 2Spherix Issues A Litigation Update 3Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 3Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 4
... conference on equity capital, the category of financing labeled ... snickers from the participants. , ,It turns out ... personal funds is nothing to laugh about, according to ... , ,William D. Bygrave, a lead researcher of ...
... Wis. - The University of Wisconsin-Madison has been ... college guide that attempts to measure higher education's contributions ... Monthly magazine debuted a college guide that ... promoting social mobility and advancing the economy. "While other ...
... says taxpayers will save more than $16 million a ... the lifetime of new state procurement contracts on seven ... technology areas. , ,The new contracts are the result ... to ensure taxpayer dollars are used responsibly. Beyond ...
Cached Biology Technology:Family reunion? Don't forget your business plan 2Family reunion? Don't forget your business plan 3New guide ranks UW-Madison tops in research 2
(Date:6/24/2015)... This report provides market analysis of the ... It contains an analysis of the drivers, challenges, and ... from the short, medium, and long term perspective landscapes. ... and technology trends that currently, prevail in the market. ... to efficiently manage the increasing marine traffic and increasing ...
(Date:6/23/2015)... June 23, 2015   MedNet Solutions , ... the entire spectrum of clinical research, is pleased ... ™ , the company,s intuitive, flexible and affordable ... Silver 2015 Stevie® Award by the American ... Services Website category.  The American Business Awards are ...
(Date:6/18/2015)... 2015 This report analyzes the worldwide markets ... Product Segments, which includes Immunoassay Analyzers and Reagents: Enzyme ... Immunoassay Systems, and Nephelometric Immunoassay Systems. The report provides ... , Japan , ... Latin America , and Rest of World. ...
Breaking Biology News(10 mins):Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2Global Immunoassay Systems Market 2Global Immunoassay Systems Market 3Global Immunoassay Systems Market 4Global Immunoassay Systems Market 5Global Immunoassay Systems Market 6Global Immunoassay Systems Market 7Global Immunoassay Systems Market 8Global Immunoassay Systems Market 9Global Immunoassay Systems Market 10Global Immunoassay Systems Market 11Global Immunoassay Systems Market 12Global Immunoassay Systems Market 13Global Immunoassay Systems Market 14Global Immunoassay Systems Market 15Global Immunoassay Systems Market 16Global Immunoassay Systems Market 17Global Immunoassay Systems Market 18Global Immunoassay Systems Market 19Global Immunoassay Systems Market 20Global Immunoassay Systems Market 21Global Immunoassay Systems Market 22Global Immunoassay Systems Market 23Global Immunoassay Systems Market 24Global Immunoassay Systems Market 25Global Immunoassay Systems Market 26Global Immunoassay Systems Market 27Global Immunoassay Systems Market 28Global Immunoassay Systems Market 29
... COLLEGE STATION Scientists plan to put two and two ... corn quality and yields. Two traits that impact corn ... scientific discoveries to improve products at the farm level. ... study by Texas AgriLife Research scientists who have been awarded ...
... HILL Bacteria can swim, propelling themselves through fluids using ... strolling along solid surfaces using little fibrous legs called pili. ... establish the infections such as meningitis that cause ... Now researchers at the University of North Carolina at Chapel ...
... a buffer physique, there,s hope. A team of American scientists ... the cause of age-related muscle atrophy that could lead to ... online the FASEB Journal ( http://www.fasebj.org ), shows ... in muscle cells, leading to cell death and muscle atrophy. ...
Cached Biology News:Genes for drought-tolerance, aflatoxin may mingle to boost corn production 2A single atom controls motility required for bacterial infection 2A single atom controls motility required for bacterial infection 3New finding may help baby boomers get buff 2
Monoclonal Anti-Gα o purified immunoglobulin buffered aqueous solution Solution in phosphate buffered saline pH 7.4, containing 0.08% sodium azide. partially purified bovine brain Gα O ...
Anti human PPAR gamma2 mouse monoclonal antibody...
Mouse monoclonal [RIZ1723] to PRDM2/RIZ...
... Reacts with an early ... infection 3 hours post-infection exhibiting ... reaches peak intensity between 6-24 ... extremely intense coarsely granular staining. ...
Biology Products: