Navigation Links
Engineers fine-tune the sensitivity of nano-chemical sensor
Date:5/8/2013

Researchers have discovered a technique for controlling the sensitivity of graphene chemical sensors.

The sensors, made of an insulating base coated with a graphene sheet--a single-atom-thick layer of carbon--are already so sensitive that they can detect an individual molecule of gas. But manipulating the chemical properties of the insulating layer, without altering the graphene layer, may yet improve their ability to detect the most minute concentrations of various gases.

The finding "will open up entirely new possibilities for modulation and control of the chemical sensitivity of these sensors, without compromising the intrinsic electrical and structural properties of graphene," says Amin Salehi-Khojin, assistant professor of mechanical and industrial engineering at the University of Illinois at Chicago, and principal investigator on the study. He and his coworkers at the UIC College of Engineering collaborated with researchers from the Beckman Institute and the Micro and Nanotechnology Laboratory at the University of Illinois at Urbana-Champaign and two institutions in Korea. Their findings are reported in the journal Nano Letter, available online in advance of publication.

Since its discovery nearly 10 years ago, graphene--in sheets, or rolled into nanotubes--has attracted huge scientific interest. Composed of a single layer of carbon atoms, graphene has potential for use in hundreds of high-tech applications. Its 2-D structure, exposing its entire volume, makes it attractive as a highly sensitive gas detector.

Salehi-Khojin's team, and others, earlier found that graphene chemical sensors depended on a structural flaw around a carbon atom for their sensitivity. They set out to show that "pristine" graphene sensors--made of graphene that was perfectly flawlesswouldn't work. But when they tested these sensors, they found they were still sensitive to trace gas molecules.

"This was a very surprising result,"
'/>"/>

Contact: Jeanne Galatzer-Levy
jgala@uic.edu
312-996-1583
University of Illinois at Chicago
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Stanford engineers use nanophotonics to reshape on-chip computer data transmission
2. Arizona State University engineers aim to improve performance of technology in extreme environments
3. Stanford engineers weld nanowires with light
4. Straintronics: Engineers create piezoelectric graphene
5. Cloak of invisibility: Engineers use plasmonics to create an invisible photodetector
6. Stanford engineers perfecting carbon nanotubes for highly energy-efficient computing
7. Engineers achieve longstanding goal of stable nanocrystalline metals
8. UCLA engineers develop new energy-efficient computer memory using magnetic materials
9. UT Arlington engineers working to prevent heat buildup within 3D integrated circuits
10. Cornell bioengineers discover the natural switch that controls spread of breast cancer cells
11. Forget about leprechauns, engineers are catching rainbows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2015)... Sept. 2, 2015 Research and ... addition of Jain PharmaBiotech,s new report ... their offering. An increasing ... biotechnology industries is anticipated. Nanotechnology will be ... - from formulations for optimal delivery to ...
(Date:9/2/2015)... ... September 02, 2015 , ... The wet ... use of special anti-vascular endothelial growth factor agents given by injection into the ... not have a scientific protocol for the many millions diagnosed with it. AMD ...
(Date:9/2/2015)... Virginia , September 2, 2015 ... of the winners of the 2015 BeHEARD science challenge, ... that offers rare disease researchers, access to the latest ... use its drug repositioning and pathway analytics capability to ... Wylder Nation Foundation in the study of Niemann-Pick Disease ...
(Date:9/2/2015)... , Sept. 2, 2015 Aytu BioScience, Inc. ... treatments for urological and related conditions, announced today that ... private placement convertible note financing, raising a total of ... totaling $3.175 million. Josh Disbrow ... this private placement are intended to be used to ...
Breaking Biology Technology:Global Nanobiotechnology Applications, Markets and Companies Report 2015-2024 2Global Nanobiotechnology Applications, Markets and Companies Report 2015-2024 3StemCell GeneticMed Announces That It Has Started Stem Cell Treatments for Age Related Dry Macular Degeneration (AMG) 2Biovista Sponsors Wylder Nation Foundation's Research on Acid Sphingomyelinase Deficiency 2Aytu BioScience Completes $5.175 Million Private Placement 2Aytu BioScience Completes $5.175 Million Private Placement 3
... May 1 /PRNewswire-Asia/ -- Yongye Biotechnology International, Inc. (OTC ... distributor of plant and animal nutrient products located in ... of the independently owned Yongye branded retail stores in ... day sales.A Yongye branded retail store in Qianjiang City ...
... SAN DIEGO, May 1 BioMed Realty Trust, Inc. ... has entered into a new 15-year lease with Regeneron ... Landmark at Eastview campus in Tarrytown, New York, which ... lease expansion, Alan D. Gold, BioMed,s Chairman and Chief ...
... Held on May 15, 2009 at 8:00 am (Eastern) ... May 1 /PRNewswire-Asia/ -- WuXi PharmaTech (Cayman) Inc. (NYSE: ... medical device R&D outsourcing company with operations in China ... release financial results for the first quarter of 2009 ...
Cached Biology Technology:Yongye Biotechnology Distributor has Record Breaking Single Store Sales Day 2Yongye Biotechnology Distributor has Record Breaking Single Store Sales Day 3BioMed Realty Trust Expands Landmark Leases With Regeneron Pharmaceuticals 2BioMed Realty Trust Expands Landmark Leases With Regeneron Pharmaceuticals 3WuXi PharmaTech Schedules First-Quarter 2009 Earnings Release 2
(Date:8/17/2015)... Aug. 17, 2015  NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market and creator ... campaign for Q4 2015. The new marketing campaign is ... of Amplitude Marketing Group ( http://amplitudemarketing.com/ ) and TPMG ... a leader in retail driven marketing and brand awareness ...
(Date:8/11/2015)... GOTHENBURG, Sweden , August 11, 2015 ... sensor FPC1155. Already received as well as expected revenues in 2015 ... included in FPC,s communicated revenue guidance of approximately 2,200 MSEK for ... is a prominent smartphone manufacturer ... ZUK selected FPC1 155 ...
(Date:8/6/2015)... JOSE, Calif. , Aug. 6, 2015 /PRNewswire/ ... leading developer of human interface solutions, today announced ... TouchPad technologies on Windows 10. Microsoft leveraged Synaptics, ... to the operating system. Through ... drivers are fully certified with Microsoft,s Precision TouchPad ...
Breaking Biology News(10 mins):NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 2NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 3FPC's Touch Fingerprint Sensor FPC1155 in ZUK's Smartphone Z1 2Synaptics Chosen for Human Interface Co-Development on Windows 10 2
... Jr., M.D., one of the "fathers" of the ... receive the seventh annual American Association for Cancer ... Cancer Prevention Research. The award is given ... the field of cancer prevention research in basic, ...
... National Jewish Health have identified a simple gene-based blood ... patients, response to therapy than current tests. The test, ... care and help clear a backlog of promising medications ... published the results of a small "proof-of-principal" trial in ...
... Signal Patterns, SP Labs Election Patterns Report explains ... of voters; report also,reveals that openness and conscientiousness ... findings, PLEASANTVILLE, N.Y., Oct. 23 SP ... of scientific-based social web,applications that characterize and connect ...
Cached Biology News:Meyskens honored with AACR-Prevent Cancer Foundation award 2New test promises quicker, more accurate evaluation for cystic fibrosis patients 2New test promises quicker, more accurate evaluation for cystic fibrosis patients 3New Study Reveals the Emotional Impact and Effectiveness of Negative Campaigning 2New Study Reveals the Emotional Impact and Effectiveness of Negative Campaigning 3New Study Reveals the Emotional Impact and Effectiveness of Negative Campaigning 4
... ProLink Express is the first fully automated ... and transfer operations with complete data tracking. ... bacterial colony picking through final protein expression ... capable of delivering a plate to any ...
...
... does sequence alignment, 3D structure visualization, phylogenetic ... all in a single application. ... databases, Uniprot, sort and filter them in ... want it, rapidly searching, filtering and sorting ...
...
Biology Products: