Navigation Links
Nanowire-based sensors offer improved detection of volatile organic compounds
Date:6/27/2011

A team of researchers from the National Institute of Standards and Technology (NIST), George Mason University and the University of Maryland has made nano-sized sensors that detect volatile organic compoundsharmful pollutants released from paints, cleaners, pesticides and other productsthat offer several advantages over today's commercial gas sensors, including low-power room-temperature operation and the ability to detect one or several compounds over a wide range of concentrations.

The recently published work* is proof of concept for a gas sensor made of a single nanowire and metal oxide nanoclusters chosen to react to a specific organic compound. This work is the most recent of several efforts at NIST that take advantage of the unique properties of nanowires and metal oxide elements for sensing dangerous substances.

Modern commercial gas sensors are made of thin, conductive films of metal oxides. When a volatile organic compound like benzene interacts with titanium dioxide, for example, a reaction alters the current running through the film, triggering an alarm. While thin-film sensors are effective, many must operate at temperatures of 200 C (392 F) or higher. Frequent heating can degrade the materials that make up the films and contacts, causing reliability problems. In addition, most thin-film sensors work within a narrow range: one might catch a small amount of toluene in the air, but fail to sniff out a massive release of the gas. The range of the new nanowire sensors runs from just 50 parts per billion up to 1 part per 100, or 1 percent of the air in a room.

These new sensors, built using the same fabrication processes that are commonly used for silicon computer chips, operate using the same basic principle, but on a much smaller scale: the gallium nitride wires are less than 500 nanometers across and less than 10 micrometers in length. Despite their microscopic size, the nanowires and titanium dioxide nanoclusters they'r
'/>"/>

Contact: Michael Baum
michaek.baum@nist.gov
301-975-2763
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Photonic crystal biosensors detect protein-DNA interactions
2. Clemson researchers advance nano-scale electromechanical sensors
3. Researchers develop flow sensors based on hair structures of blind cavefish
4. A London effort to develop point-of-care nanosensors for HIV diagnosis and monitoring
5. Uncooperative voltage sensors
6. New way to make sensors that detect toxic chemicals
7. SRNL, automakers to develop high-performance wireless sensors networks
8. Conference to discuss future of nanotechnology enabled sensors
9. New biosensors reveal workings of anti-psychotic drugs in the living brain
10. Scientists use nanosensors for first time to measure cancer biomarkers in blood
11. UCLA researchers show how worlds smallest coffee ring may help biosensors detect disease
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanowire-based sensors offer improved detection of volatile organic compounds
(Date:12/10/2014)...  Valencell, a leader in performance biometric data sensor technology, ... its licensees for highly accurate, clinically validated biometric technology. ... from fitness and health sectors, but first responders/military and ... only as useful as the biometric data it delivers. ...
(Date:12/10/2014)... SAN DIEGO , Dec. 9, 2014 CIE San ... that provides the connective tissue that enhances care coordination among ... share client-level information; earned a second $1 million grant from ... aging in community and; will be recognized as a "Live ...
(Date:12/10/2014)... SUNNYVALE, California , December 9, 2014 ... with ITN,s BCARD Platform   ... cloud-based enterprise meeting scheduling solutions for business-to-business (B2B) ... the world leader in mobile near-field communication (NFC), ...
Breaking Biology News(10 mins):Wearable Technology Products Demand Highly Accurate Biometric Technology 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3
... 2009 American Society for Microbiology (ASM) ICAAC Young ... Hohl, Assistant Professor, Vaccine and Infectious Diseases Institute, ... Division of Allergy and Infectious Diseases, University of ... this award recognizes early career scientists for research ...
... The 2009 American Society for Microbiology (ASM) ICAAC ... Masopust, Assistant Professor, University of Minnesota, Minneapolis. Sponsored ... early career scientists for research excellence in microbiology ... interest is understanding the immunological memory of bacterial ...
... COLUMBUS, Ohio -- Engineers at Ohio State University have found ... which might someday replace gasoline in automobiles. The process ... bacterial fermentation tank. Normally, bacteria could only produce a ... chemical for every liter of water in the tank -- ...
Cached Biology News:Researchers boost production of biofuel that could replace gasoline 2
(Date:1/22/2015)... ALTO, Calif. , Jan. 22. 2015  Varian Medical Systems ... and software, has been honored for its commitment to sustainability ... sustainable companies. Varian is the highest ranked healthcare equipment company ... announced today during the World Economic Forum at ...
(Date:12/24/2014)... Dec. 24, 2014  United Therapeutics Corporation (NASDAQ: ... MDT ) has submitted a pre-market approval application ... the use of Medtronic,s SynchroMed ® II implantable ... use with United Therapeutics, Remodulin ® (treprostinil) Injection ...
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument ... Buffers, Valves, Guages, Seals), Accessories, Services, End User ... 2019” provides a detailed overview of the major ... strategies impacting the preparative and process chromatography market ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 On Friday, ... 83, the Omnibus and Continuing Resolution Appropriations Act of ... condition eligible to receive funding through the Congressionally Directed ... Defense (DoD). The Hydrocephalus Association (HA), working in conjunction ...
Breaking Biology Technology:Varian Honored Among World's 100 Most Sustainable Corporations 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2
... Wis. - Gov. Jim Doyle, during visits to Green ... the state's production of renewable energy. , ,In what was ... joint public-private effort to generate 25 percent of electricity and ... facing an energy crisis," Doyle said at Virent Energy ...
... - After receiving FDA clearance for two new ... is prepared to market its products to healthcare providers. ... Administration Center for Devices and Radiologic Health in ... two new products to its line of brain mapping ...
... Wis. - Platypus Technologies recently made ... line of products and court strategic partners - and ... nanotechnology company is prepared to expand its product lineup ... by researchers, and management is in discussions with larger ...
Cached Biology Technology:Doyle launches 2025 alternative energy plan 2Kyron wins FDA approval for brain imaging technology 2Platypus ready to unveil new commercial lines 2Platypus ready to unveil new commercial lines 3Platypus ready to unveil new commercial lines 4
... First-Strand cDNA Labeling System - dUTP ... reactions. For the generation and purification ... are packaged together for complete cDNA ... can be used for performing labeling ...
Canine Serum...
Collected from sexually mature, mixed sex, mixed breed dogs. Serum from specific breeds available by request....
CASPR (H-66)...
Biology Products: