Navigation Links
Tiny sensors tucked into cell phones could map airborne toxins in real time
Date:5/13/2010

A tiny silicon chip that works a bit like a nose may one day detect dangerous airborne chemicals and alert emergency responders through the cell phone network.

If embedded in many cell phones, its developers say, the new type of sensor could map the location and extent of hazards like gas leaks or the deliberate release of a toxin.

"Cell phones are everywhere people are," said Michael Sailor, professor of chemistry and biochemistry at the University of California, San Diego who heads the research effort. "This technology could map a chemical accident as it unfolds."

In collaboration with Rhevision, Inc., a small startup company located in San Diego, Sailor's research group at UCSD has successfully finished the first phase of development of the sensor and have begun to work on a prototype that will link to a cell phone.

The sensor, a porous flake of silicon, changes color when it interacts with specific chemicals. By manipulating the shape of the pores, the researchers can tune individual spots on the silicon flake to respond to specific chemical traits.

"It works a little like our nose," Sailor said. "We have a set of sensory cells that detect specific chemical properties. It's the pattern of activation across the array of sensors that the brain recognizes as a particular smell. In the same way, the pattern of color changes across the surface of the chip will reveal the identity of the chemical."

Already their chips can distinguish between methyl salicylate, a compound used to simulate the chemical warfare agent mustard gas, and toluene, a common additive in gasoline. Potentially, they could discriminate among hundreds of different compounds and recognize which might be harmful.

A megapixel camera smaller than the head of a pencil eraser captures the image from the array of nanopores in Sailor's chip.

To focus on the fine-scale detail in their optical array, the team uses a new kind
'/>"/>

Contact: Michael Sailor
scinews@ucsd.edu
University of California - San Diego
Source:Eurekalert  

Page: 1 2

Related biology news :

1. UCLA researchers show how worlds smallest coffee ring may help biosensors detect disease
2. Conference to discuss future of nanotechnology enabled sensors
3. New biosensors reveal workings of anti-psychotic drugs in the living brain
4. Scientists use nanosensors for first time to measure cancer biomarkers in blood
5. SRNL, automakers to develop high-performance wireless sensors networks
6. New way to make sensors that detect toxic chemicals
7. Uncooperative voltage sensors
8. A London effort to develop point-of-care nanosensors for HIV diagnosis and monitoring
9. Researchers develop flow sensors based on hair structures of blind cavefish
10. Clemson researchers advance nano-scale electromechanical sensors
11. Photonic crystal biosensors detect protein-DNA interactions
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Tiny sensors tucked into cell phones could map airborne toxins in real time
(Date:4/23/2014)... a newly coined term for novels and films which focus ... of Copenhagen shows how these fictions serve as a mental ... climate change and imagine other living conditions. , "Global ... the atmosphere; it is also a cultural phenomenon in which ... the films we see. And there are so many of ...
(Date:4/23/2014)... University of Exeter researcher has shed light on how ... in Australia,s remote outback have become reviled as pests ... of the Environment and Sustainability Institute at the University ... camel in Australia, from their historic role helping to ... as unwelcome "invader." , The deserts of the Australian ...
(Date:4/23/2014)... leading a 2 million Food Standards Agency (FSA) project ... and industry workers. , Norovirus outbreaks can rapidly ... batch of frozen strawberries infected 11,000 people in Germany, ... of which strains cause infection and which foods are ... , Researchers will produce data that will help the ...
Breaking Biology News(10 mins):Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3How Australia got the hump with 1 million feral camels 2How Australia got the hump with 1 million feral camels 3
... that allowing babies to swim is possibly not as ... till now," underlines Dr. Joachim Heinrich. He leads ... for Epidemiology. Prof. Dr. Dr. H. Erich ... This is a first indication. Nevertheless, it requires other ...
... receives funding from Hope Against Cancer (formerly The ... bilberries can prevent or delay the onset of ... University of Leicester, is leading an investigation ... produced substance Mirtoselect (extracted from bilberries), with the ...
... Mich. Scientists have identified and described stem cells specific ... master cells that give rise to the specialized cell types ... possible to pinpoint functioning stem cells in the stomach, either ... of University of Michigan Medical School researchers has succeeded in ...
Cached Biology News:Bilberry extract -- can it help prevent certain cancers? 2Bilberry extract -- can it help prevent certain cancers? 3Stomach stem cell discovery could bring cancer insights 2Stomach stem cell discovery could bring cancer insights 3
(Date:1/15/2014)... Canada (PRWEB) January 15, 2014 This ... on nonclinical and clinical safety assessment in biosimilars. , ... path for biosimilar drug development, however the complex nature ... to quality, safety and efficacy extremely challenging. Based on ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 The Microcompetition with ... major disease. One of these latent viruses is the Epstein ... arthritis (RA). Rheumatoid arthritis (RA) is a chronic inflammatory disease ... a study found that RA patients have high concentrations of ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of Notched ... tinnitus. Patients listen to sound therapy that is tailor-made ... weeks to months, their tinnitus volume decreases. , AudioNotch has ... and Notched White Noise. Now, AudioNotch is pleased to announce ...
(Date:1/14/2014)... Histogen, Inc., a regenerative medicine company developing ... simulated embryonic conditions, today announced that they have entered ... for physician-dispensed aesthetic products containing Histogen’s proprietary multipotent cell ... an amendment to the existing license between Histogen and ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Study: 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 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3
... about IT project failure rates. Youve probably heard mention of ... poor requirements and scope definition, lack of business relevance or ... of this hand wringing is the real root cause. Its ... For each one, the source is the failure of specific ...
... Welcome to the global village called BIO 03. Lets ... , ,Starting at the Wisconsin Pavilion in the cavernous exhibit ... 100 the anniversary Harley-Davidson motorcycle parked in the corner. OK, ... its a great way to lure people into our aisle. ...
... Note: The Wisconsin Technology Council has published ... The 24-page publication highlights the states research base, ... contacts and the I-Q Corridor that joins Chicago, ... Technology Network has arranged to post excerpts from ...
Cached Biology Technology:Analog people in the digital revolution 2Analog people in the digital revolution 3On Location at BIO 2003 2Life Science: From the arts to the outdoors: Living and Playing in Wisconsin 2Life Science: From the arts to the outdoors: Living and Playing in Wisconsin 3Life Science: From the arts to the outdoors: Living and Playing in Wisconsin 4Life Science: From the arts to the outdoors: Living and Playing in Wisconsin 5
B2-Microgloulin...
... utilizies CTI Molecular Imaging's proprietary Focus™ detector ... volume as the R4. The microPET ... any commerically avaiable PET scanner. Focus ... of any scinitallor based PETsystems. The ...
...
... product has been developed to significantly increase ... proteins. Stability is increased at room ... centigrade. This product is subjected to ... or azide. This formulation insures consistently ...
Biology Products: