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

Salehi-Khojin said.

The researchers tested the sensor layer by layer. They found that pristine graphene is insensitive, as they had predicted.

They next set about removing any flaws, or reactive sites called dangling bonds, from the insulating layer. When a pristine insulating layer was tested with pristine graphene, again there was no sensitivity.

"But when dangling bonds were added back onto the insulating layer, we observed a response," said Bijandra Kumar, a post-doctoral research associate at UIC and first author of the Nano Letter study.

"We could now say that graphene itself is insensitive unless it has defects--internal defects on the graphene surface, or external defects on the substrate surface," said UIC graduate student Poya Yasaei.

The finding opens up a new "design space," Salehi-Khojin said. Controlling external defects in the supporting substrates will allow graphene chemFETs to be engineered that may be useful in a wide variety of applications.


'/>"/>

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:7/24/2014)... worldwide rely on sophisticated equipment, trained personnel, and ... areas against terrorist attacks. A revolutionary new electronic ... make their job much easier. , The groundbreaking ... Tel Aviv University ,s School of Chemistry and ... the Herzliya company Tracense, picks up the scent ...
(Date:7/24/2014)... Yet, scientists are making progress in devising suitable ... approach relies on quantum dotsa kind of artificial ... A new study demonstrates that changing the coupling ... electrical impulses can help better control them. This ... as quantum information units, which would produce faster ...
(Date:7/24/2014)... to settle into equilibriuma state of unchanging balance ... of non-equilibrium conditions where new possibilities lie. Non-equilibrium ... such as temperature fluctuations, freezing and melting, or ... body temperature, airplanes to fly, and the Earth ... even though these conditions exist naturally and are ...
(Date:7/24/2014)... July 24, 2014 Research and Markets ... Genomics and Proteomics Analytical Instruments Market 2014-2018" report ... Genomics is the study of the ... of the structure and functions of proteomes or sets ... and technology. Genomics involves the mapping of genes and ...
Breaking Biology Technology:Nano-sized chip 'sniffs out' explosives far better than trained dogs 2New approach to form non-equilibrium structures 2Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 2
... AGREEMENT COVERS MARROWXPRESS(TM) IN KEY GLOBAL MARKETS, ... KOOL ), a leading supplier of innovative ... cells, said today it has signed,a distribution agreement ... used for isolating stem cells from bone,marrow. The ...
... MINNETONKA, Minn., Sept. 9 For the second ... in clinical study management systems, has been recognized ... fastest growing private,organizations. With consistently strong growth over ... growing company in the Twin Cities,metro area, and ...
... of Cervical Cancer Prevention: What Do We Need to Do, Now ... ... HPV Vaccine Era, CHICAGO, Sept. 9 The Society of ... 12-13,2008 at the Hotel SAX in Chicago, IL. Approximately 50 key ...
Cached Biology Technology:ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 2ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 3ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 4MedNet Solutions Again Recognized as one of the Fastest Growing US Companies 2Society of Gynecologic Oncologists to Host Cervical Cancer Prevention Forum 2Society of Gynecologic Oncologists to Host Cervical Cancer Prevention Forum 3
(Date:7/24/2014)... species of fish, according to a new study ... tested fish anti-predator behaviour. , Three-spined sticklebacks ... when exposed to additional noise, whereas no effects ... author Dr Irene Voellmy of Bristol,s School of ... environments have increased substantially during the last few ...
(Date:7/24/2014)... sticky research out of York University shows a surprisingly ... toxic grass fungus: moose saliva (yes moose saliva). ... "Ungulate saliva inhibits a grassendophyte mutualism" shows that moose ... (which hosts a fungus called epichlo festucae that produces ... less toxicity. , "Plants have evolved defense mechanisms to ...
(Date:7/24/2014)... at The University of Texas Health Science Center at ... to help Harris County residents whose vision problems cannot ... with corrective lenses, many people with low vision can ... of low vision devices, such as telescopes, magnifiers and ... Iyer is using the three-year, $164,645 SightFirst grant from ...
Breaking Biology News(10 mins):Moose drool inhibits growth of toxic fungus: York U research 2UTHealth Dr. Bhavani Iyer awarded low vision grant 2
... DURHAM, N.H. The angel investor market in the first ... 30 percent market correction in the second half of 2008 ... $8.9 billion, an increase of 4.7 percent over the same ... at the University of New Hampshire. A ...
... Water channels exist not only in nature microscopical ... body, where they ensure that water can be transported through ... of Gothenburg, Sweden, have discovered that one type of the ... more stable , which may be significant in the treatment ...
... National Science Foundation (NSF) has selected a team of ... the new Sustainable Cities - People, Infrastructures and the ... is leading the project, which includes 20 U.S. universities, ... grant aims to bring together scientists from all over ...
Cached Biology News:Angel investor market stabilizes in first half of 2011, UNH Center for Venture Research finds 2Water channels in the body help cells remain in balance 2National Science Foundation selects University of Colorado Denver team to study city sustainability 2
Request Info...
streptavidin, Alexa Fluor® 750–allophycocyanin conjugate (Alexa Fluor® 750–allophycocyanin streptavidin) *1 mg/mL*...
Biotin-OSu is used to label proteins, immunological agents, DNA and synthetic oligonucleotides. Biotin labeling is detected through enzymatically labeled avidin or streptavidin proteins that conforma...
RAT ANTI MOUSE JAM-2 Immunogen: Recombinant soluble JAM-2...
Biology Products: