Navigation Links
New research gives insight into graphene grain boundaries
Date:1/15/2013

th the CVD method to pieces of a cyclone fence.

"If you had two pieces of fence, and you laid them on the ground next to each other but they weren't perfectly aligned, then they wouldn't match," he said. "That's a grain boundary, where the lattice doesn't match."

The research involved Pop's group, led by Beckman Fellow Josh Wood, growing the graphene at the Micro and Nanotechnology Lab, and transferring the thin films to a silicon (Si02) wafer. They then used the STM at Beckman developed by Lyding for analysis, led by first author Justin Koepke of Lyding's group.

Their analysis showed that when the electrons' itinerary takes them to a grain boundary, it is like, Lyding said, hitting a hill.

"The electrons hit this hill, they bounce off, they interfere with themselves and you actually see a standing wave pattern," he said. "It's a barrier so they have to go up and over that hill. Like anything else, that is going to slow them down. That's what Justin was able to measure with these spectroscopy measurements.

"Basically a grain boundary is a resistor in series with a conductor. That's always bad. It means it's going to take longer for an electron to get from point A to point B with some voltage applied."

Images from the STM reveal grain boundaries that suggest two pieces of cloth sewn together, Lyding said, by "a really bad tailor."

In the paper, the researchers were able to report on their analysis of the orientation angles between pieces of graphene as they grew together, and found "no preferential orientation angle between grains, and the GBs are continuous across graphene wrinkles and Si02 topography." They reported that analysis of those patterns "indicates that backscattering and intervalley scattering are the dominant mechanisms responsible for the mobility reduction in the presence of GBs in CVD-grown graphene."

Lyding said that the relationship between the orientation angle of the pieces of graphene and the wavelength of an el
'/>"/>

Contact: Steve McGaughey
smcgaugh@illinois.edu
217-244-5582
Beckman Institute for Advanced Science and Technology
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Sustainable Valley Technology Group Provides Technology Innovation Grant To Help Researchers & Start-Ups With Funding, Business Support, Equipment & Facilities
2. Live Webinar on Protection of Phase 1 Research Volunteers
3. Rockingham County Economic Development Launches New Website to Market Research and Tech Park
4. Verified Clinical Trials Will Exhibit at the Annual 2013 SCOPE Summit to Discuss the Professional Research Subject and the Clinical Trial Database Registry
5. New Research Helps Explain Weakened Immune Response in Elderly
6. Penn researchers show new level of control over liquid crystals
7. Market for Biologic Imaging Reagents and Medical Imaging & Diagnosing Analyzed in New Research Reports at ReportsnReports.com
8. Carin Grings remains identified by researchers at Uppsala University
9. LA Dental Bone Graft Substitute & Other Biomaterials Market Reviewed in New iData Research Report Available at MarketPublishers.com
10. Liquid crystal research, future applications advance
11. New funding to research super material graphene
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New research gives insight into graphene grain boundaries
(Date:12/22/2014)... /PRNewswire/ - RepliCel Life Sciences Inc. (OTCQB: REPCF) (TSX.V: ... the development of autologous cell therapies, announced today the ... Calgary in conjunction with co-authors from Kyoto University and ... company,s ongoing clinical research using dermal sheath cup (DSC) ... The paper entitled " Hair Follicle Dermal Stem ...
(Date:12/22/2014)... , Dec. 22, 2014  ( www.competitivehealth.com ) ... an online medical bill review and advocacy service, has ... the FREE WellCard Savings discount health services marketplace. ... that was more than they expected to pay. As ... health care costs, WellCard Savings is pleased to offer ...
(Date:12/22/2014)... 2014 Fertility Associates of Memphis has ... USA , a network of more than 20 contributing ... patients have fast access to a national pool of ... . Fertility Associates of Memphis is the only fertility ... option. , Dr. William Kutteh , director of ...
(Date:12/19/2014)... 2014 BioPlus Specialty Pharmacy ... the promotion of Nick Maroulis, Pharm.D. to the newly ... , In this position, Dr. Maroulis will continue ... the directors of our multi-site pharmacies as the company ... and during that time he has served in many ...
Breaking Biology Technology:Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2
... Capital Partners and Versant Ventures Lead ... Help Transform Clinical Microbiology, MADISON, Wis., Sept. 12 ... in equity financing. The round,was led by CHL Medical Partners, ... also participating. In,conjunction, CHL,s Ron Lennox will become chairman of ...
... raw materials for the chemical industry and generate power ... manufacturing processes. , Making synthesis gas - a blend ... step in turning natural gas or biomass into bulk ... and ammonia, which are the feedstock of the global ...
... in Clean Technology and Global Business Potential, ... Inc., a,leading algal biotechnology company, today announced that ... the GoingGreen 100 Top Private Companies for,2007. The ... the,AlwaysOn editorial panel. In order to be eligible ...
Cached Biology Technology:OpGen Announces $23.6 Million Series A Financing 2OpGen Announces $23.6 Million Series A Financing 3A POX on syn 2Solazyme, Inc. Selected by AlwaysOn as a GoingGreen 100 Top Private Company Award Winner 2Solazyme, Inc. Selected by AlwaysOn as a GoingGreen 100 Top Private Company Award Winner 3
(Date:12/17/2014)... 2014  HITLAB SM announced today its ... to confirm its adherence to current U.S. Food ... HITLAB to conduct regulated smart device and smart ... patient safety and research quality. "HITLAB ... and delivery with innovative technology," said Laura ...
(Date:12/17/2014)... 2014 Research and Markets ( ... "Global Chemical Sensor Market 2015-2019" report ... http://photos.prnewswire.com/prnh/20130307/600769 One major trend upcoming ... medical sensors in biomedical applications. Chemical sensors help ... correct diagnosis during surgical procedures. The Global Chemical ...
(Date:12/15/2014)... DUBLIN , Dec. 12, 2014 Research ... announced the addition of the "Global Facial ... http://photos.prnewswire.com/prnh/20130307/600769 ... the identification of individuals. Facial recognition system measures ... as nose, jaw edges, mouth, and the distance ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
... /PRNewswire-iReach/ -- We,ve heard they may be easy enough ... yoga facial exercises regimen, the whole face and neck ... exercises using the fingertips are oftentimes performed to generate ... really work? (Photo: http://photos.prnewswire.com/prnh/20130710/CG44610 ) ...
... people with schizophrenia have marked problems with motivation, ... These negative symptoms of schizophrenia can be disabling ... For many years it was thought this was ... with successful goal attainment. However, recent laboratory studies ...
... Lithuania , July 10, 2013   ... identification technologies, today announced new releases across their ... including: MegaMatcher 4.5 multi-biometric SDK for large-scale applications, ... facial identification, VeriEye 2.7 for iris identification and ...
Cached Biology News:Getting Rid of Facial Wrinkles and Toning Up in 2013 2Getting Rid of Facial Wrinkles and Toning Up in 2013 3Calculating the value of effortful behavior: A clue to schizophrenia-related disability? 2Neurotechnology Announces MegaMatcher Accelerator 6.0 High-speed, High-volume Multibiometric Identification Solution and Updates to Entire Biometric Product Line 2Neurotechnology Announces MegaMatcher Accelerator 6.0 High-speed, High-volume Multibiometric Identification Solution and Updates to Entire Biometric Product Line 3Neurotechnology Announces MegaMatcher Accelerator 6.0 High-speed, High-volume Multibiometric Identification Solution and Updates to Entire Biometric Product Line 4
Performance, mycoplasma, virus, and endotoxin tested...
... 10X BlueJuice Gel ... for easy loading and ... in agarose or native ... buffer features higher density ...
... Cloning is the most ... cloning PCR products. TOPO ... Blunt TOPO vectors are ... with topoisomerase I. This ...
ready-to-use solution...
Biology Products: