HOME >> BIOLOGY >> NEWS
UCSD chemists develop portable nerve gas sensor

Using a silicon chip and parts from an inexpensive CD player, chemists at the University of California, San Diego have developed a portable nerve-gas sensor capable of detecting "G-type" nerve agents, such as sarin, soman and GF.

The achievement should eventually permit the development of a large number of small and inexpensive sensors that could be deployed by soldiers across a battlefield or by police after a terrorist explosion to rapidly detect the presence of certain nerve agents and to track the movements of the deadly plumes.

"With multiple sensors that have a radio transmitter attached to them, you can tell how big the cloud is and where it is moving and relay that information to a base station," says Michael J. Sailor, a professor of chemistry and biochemistry at UCSD. He will provide details of his group's achievements today at the 220th national meeting of the American Chemical Society in Washington, DC.

The innovative silicon sensor was constructed by a team that included William C. Trogler, a professor of chemistry and biochemistry, and postdoctoral associates Sonia Letant and Honglae Sohn. It works by selectively detecting compounds with a phosphorus-fluorine chemical bond, such as sarin, at very low concentrations.

To accomplish this, the scientists used a catalyst that Trogler and his co-workers had developed for the Army to detoxify materials containing nerve agents and other deadly chemicals with phosphorus-fluorine bonds. This catalyst breaks the phosphorus-fluorine bond in "G"-type nerve agents, resulting in the production of hydrogen fluoride, which is used commercially to etch and frost glass.

The sensor detects the presence of hydrogen fluoride through a silicon interferometer-a stamp-sized silicon wafer, similar to a computer chip, with an optical coating containing the catalyst. The rainbow-colored optical coating, which is akin to the sheen left by a thin film of oil on water, changes color when mole
'"/>

Contact: Kim McDonald
kimmcdonald@ucsd.edu
858-534-7572
University of California - San Diego
20-Aug-2000


Page: 1 2 3

Related biology news :

1. NIH roadmap for biomedical research focus of chemists at American Chemical Society meeting
2. New multidisciplinary research tops chemists meeting Aug. 22-26
3. Wisconsin chemists find a new chink in TBs armor
4. UCLA chemists develop new coating for nanoscale probes
5. NJIT chemists pave way for cheap, usable field test for polluted, toxic, water, air, food
6. Frog skin and supercomputers lead Penn chemists to designing better bacteria killers
7. Purdue chemists put the twist on protein building block
8. New pollutant cleanup technique puzzles, pleases chemists
9. Homeland security symposium covers what chemists can do to help protect the nation
10. Michigan, Connecticut and Illinois chemists receive award for drug to combat antibiotic resistance
11. Carnegie Mellon University chemists create versatile polymer brushes

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: UCSD chemists develop portable nerve gas sensor

(Date:4/17/2014)... . Our eyes ... us with a continuous stream of information about our own ... in a car the world glides by us and ... effort, our brain calculates self-motion from this "optic flow". This ... gaze during our own movements. Together with biologists from the ...
(Date:4/17/2014)... years ago, Katia Silvera , a postdoctoral scholar at ... a field trip in a mountainous area in central Panama ... before. , Unable to identify it, they contacted German Carnevali, ... to be an unnamed species. So Carnevali recently named it ... the genus name, comprising about 40 species in the world. ...
(Date:4/17/2014)... in Europe, Asia and the United States are spreading ... impacting native honeybee populations at this time, according to ... including Nosema microsporidia and Varroa ... to these invasive pests, which suggests to us that ... and the United States currently are not necessary in ...
Breaking Biology News(10 mins):How vision makes sure that little fish do not get carried away 2How vision makes sure that little fish do not get carried away 3How vision makes sure that little fish do not get carried away 4Orchid named after UC Riverside researcher 2Orchid named after UC Riverside researcher 3East African honeybees are safe from invasive pests… for now 2East African honeybees are safe from invasive pests… for now 3
(Date:1/15/2014)... NY (PRWEB) January 15, 2014 The Microcompetition ... a major disease. One of these latent viruses is the ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic inflammatory ... theory, a study found that RA patients have high concentrations ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 Freeslate, ... solutions, today announced that Lupin Limited, one of India’s ... CM Protégé PharmD System for high throughput ... India, is focused on a wide range of quality, ...
(Date:1/14/2014)... 14, 2014 Date: Friday, April 11, 2014 ... Country Club, 1360 Almshouse Road, Warrington, Pa. , ... solely dedicated to finding a cure for hepatitis B and ... host its annual Crystal Ball on Friday, April 11 at ...
(Date:1/14/2014)... a leading provider of strategic communications services to corporations and organizations ... the United States and Europe ... is returning to the firm,s Washington, D.C. ... than two years of service as Associate Commissioner for the Office ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2
Cached News: