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:4/1/2015)... NJ (PRWEB) April 01, 2015 Earlier ... BioNJ, a vibrant life sciences industry association that represents ... 400 members. , Jonathan Parker, AJO’s Vice President ... Gala Dinner in February, an event that attracted over ... highlights, Don Wright, a 73 year old cancer survivor ...
(Date:3/31/2015)... 31, 2015 CytoSorbents Corporation (NASDAQ CM: ... purification to treat critically-ill and cardiac surgery patients ... and reports financial results for the fiscal year ... CytoSorb® product revenues were a record $3.1M, an ... CytoSorb® revenues of $0.8M Highlights for the Year ...
(Date:3/31/2015)... Eastern Kentucky University is ranked among ... criminal justice degree programs by Nonprofitcollegesonline.com. , “We ... and high quality educational opportunities,” Editor Liz Robertson ... are confident that students will find both at ... site’s first “Students before Profits” list, and EKU ...
(Date:3/31/2015)... 31, 2015  Sonoa Health, a health tech startup ... developed a world-first consumer health portal, Health&, which brings ... devices and more. Today, the Company appointed ... CEO, who brings to the table more than 18-years ... included working closely with the biggest names in Silicon ...
Breaking Biology Technology:HR Consulting Firm, A.J. O'Connor Associates Joins BioNJ – The Vibrant 400 Member Strong Life Sciences Industry Association - and Attends its Annual Dinner 2CytoSorbents Reports Record 2014 Revenue 2CytoSorbents Reports Record 2014 Revenue 3CytoSorbents Reports Record 2014 Revenue 4CytoSorbents Reports Record 2014 Revenue 5CytoSorbents Reports Record 2014 Revenue 6CytoSorbents Reports Record 2014 Revenue 7CytoSorbents Reports Record 2014 Revenue 8CytoSorbents Reports Record 2014 Revenue 9CytoSorbents Reports Record 2014 Revenue 10CytoSorbents Reports Record 2014 Revenue 11EKU Ranked in Top 50 Among Online Criminal Justice Degrees 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 3
... THOROLD, ON, Oct. 15 /PRNewswire/ - Norgen Biotek ... advancing powerful,tools for nucleic acids and protein purification, ... the isolation of nucleic acids from,environmental samples, the ... Kit. These kits are ideal for environmental microbiological,studies, ...
... Baxa is promoting its new PadLock Set Saver product ... Salt Lake City,UT, at The Salt Palace, October 15-17, ... is promoting,its new PadLock Set Saver at the ANCC ... aseptic IV administration set storage,solution, PadLock provides a secure ...
... OLDSMAR, Fla., Oct. 15 Cryo-Cell,International, Inc. (OTC ... largest and most established family cord blood banks, ... months ended August 31,2008., Consolidated revenues for ... approximately $4.6 million for the third quarter of,2007. ...
Cached Biology Technology:High-quality DNA/RNA from Microorganisms in Environmental Samples 2Baxa Corporation Features PadLock(R) Set Saver at the ANCC National Magnet Conference(TM) 2Cryo-Cell International, Inc. Reports Third Quarter 2008 Results 2Cryo-Cell International, Inc. Reports Third Quarter 2008 Results 3Cryo-Cell International, Inc. Reports Third Quarter 2008 Results 4Cryo-Cell International, Inc. Reports Third Quarter 2008 Results 5Cryo-Cell International, Inc. Reports Third Quarter 2008 Results 6
(Date:3/24/2015)... March 24, 2015   Crossmatch ™, a ... announced that its U.are.U ® 4500 Fingerprint ... Goorin Bros . to achieve PCI compliance for ... access to the POS terminal, protecting the retailer ... data breaches. With one-third of ...
(Date:3/23/2015)... , Mar. 23, 2015 NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, announces its biometric ... advertising campaign on CNBC television starting March 30 th ... commence airing in New York markets. ... said: "We are excited about our new ad campaign following ...
(Date:3/20/2015)... , Mar. 19, 2015 Research and Markets ... "Iris Biometrics - Global Strategic Business Report" report ... markets for Iris Biometrics in US$ Thousands. The report provides ... , Japan , Europe ... , and Latin America . ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5
... 2013 Medbox, Inc. (OTC Markets: MDBX) ( www.medboxinc.com ), ... the medical and retail industries, announced that their patented software ... means to meet the priorities spelled out by the US ... United States Attorneys titled, "Guidance Regarding Marijuana ...
... flatworms have the remarkable ability to regrow any missing body ... the molecular basis of regeneration. Over the ... differ depending on the severity of the injury they suffer. ... wound reacts at the cellular and molecular levels quite differently ...
... to the origin of species as "that mystery of mysteries," ... cannot fully explain how new animals and plants arise. ... based on the assumption that the main cause of the ... formation of barriers to reproduction between populations. Those barriers ...
Cached Biology News:Medbox's Marijuana Dispensing System Assists Operators in Complying with Federal Government's New Canna-Business Guidelines 2Medbox's Marijuana Dispensing System Assists Operators in Complying with Federal Government's New Canna-Business Guidelines 3Tissue loss triggers regeneration in planarian flatworms 2Long-held assumption about emergence of new species questioned 2Long-held assumption about emergence of new species questioned 3
... ACS Reagent Grade C 19 H 9 ... 691.95 PRODUCT SPECIFICATIONS Form: Powder Clarity of ... pH 3.0 - Yellow pH 4.6 ... dye in agarose and acrylamide gel electrophoresis. ...
... 22K enables researchers to simultaneously characterize ... biological functions, growth processes, and biotic ... contains sequences representing estimated coverage of ... focuses on well annotated genes selected ...
... liquid handling system from Molecular Devices provides ... one instrument. The system handles a variety ... washing96-, 384- and 1536-welland is the first ... has been optimized to dispense from four ...
... Fluorescence Test Plate consists of an anodized ... Inert Organic Fluorescent Compounds embedded in polymerized ... on BioTeks FLx800 and Synergy Multi-Detection Readers. ... GLP compliance while reducing the need for ...
Biology Products: