Navigation Links
Sniffing out a better chemical sensor
Date:10/29/2008

Marrying a sensitive detector technology capable of distinguishing hundreds of different chemical compounds with a pattern-recognition module that mimics the way animals recognize odors, researchers at the National Institute of Standards and Technology (NIST) have created a new approach for electronic noses. Described in a recent paper,* their electronic nose is more adept than conventional methodologies at recognizing molecular features even for chemicals it has not been trained to detect and is also robust enough to deal with changes in sensor response that come with wear and tear. The detector could be a potent tool for applications such as sniffing out nerve agents, environmental contaminants, and trace indicators of disease, in addition to monitoring industrial processes and aiding in space exploration.

In animals, odorant molecules in the air enter the nostrils and bind with sensory neurons in the nose that convert the chemical interactions into an electrical signal that the brain interprets as a smell. In humans, there are about 350 types of sensory neurons and many copies of each type; dogs and mice have several hundreds more types of sensory neurons than that. Odor recognition proceeds in a step-by-step fashion where the chemical identity is gradually resolved: initial coarse information (e.g. ice-cream is fruit-flavored vs. chocolate) is refined over time to allow finer discrimination (strawberry vs. raspberry). This biological approach inspired the researchers to develop a parallel divide and conquer method for use with the electronic nose.

The technology is based on interactions between chemical species and semiconducting sensing materials placed on top of MEMS microheater platforms developed at NIST. (See NIST Microhotplate May Help Search for Extraterrestrial Life, NIST Tech Beat, Oct., 2001.) The electronic nose employed in the current work is comprised of eight types of sensors in the form of oxide films deposited on t
'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Scat sniffing dogs detecting rare California carnivores
2. New caledonian crows find 2 tools better than 1
3. Restoring sight, advances in fertility treatments and better visibility for pilots at FIO
4. New CPR promises better results by compressing abdomen, not Chest
5. City birds better than rural species in coping with human disruption
6. Doctors learn to control their own brains pain responses to better treat patients
7. Study reveals that immigrant teenagers eat better than Spanish teenagers
8. New membrane strips carbon dioxide from natural gas faster and better
9. New approach builds better proteins inside a computer
10. People who skip meals: are they better off?
11. Researchers successfully simulate photosynthesis and design a better leaf
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sniffing out a better chemical sensor
(Date:7/11/2014)... 3, 2014, Shenzhen, China Researchers from Salk Institute ... the first time evaluated the safety and reliability ... successfully developed a new method, TALEN-HDAdV, which could ... stem cell (hiPSC). This study published online in ... theoretical foundation for stem cell-based gene therapy. , ...
(Date:7/11/2014)... 2014 The increased risk of kidney injury related ... fluids reflects the mass of HES molecules, according to ... journal of the International Anesthesia Research Society (IARS). , ... effect of HES on cultured human renal proximal tubule ... Wunder and colleagues of University Hospital Wrzburg, Austria. ...
(Date:7/11/2014)... 11, 2014 Research and Markets ... Technology Market - Industry Analysis Size Share Growth Trends ... http://photos.prnewswire.com/prnh/20130307/600769 ... created a need for high level security in both ... authentication such as username and passwords, tokens etc. are ...
Breaking Biology News(10 mins):A new genome editing method brings the possibility of gene therapies closer to reality 2In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2International Biometrics Technology Market - Industry Analysis Size Share Growth Trends and Forecast to 2019 2
... Academic Affairs John Wiecha, MD, MPH, in the Department ... Health (NIH) American Recovery & Reinvestment Act (ARRA) Challenge ... valued at more than $950,000 will fund a study ... diabetes. The health education will be conducted either ...
... years ago, vertebrates lacked the ability to chew their food. ... a flexible, fused basket of cartilage. This week, an ... the University of Colorado at Boulder published evidence that three ... development of jaws in higher vertebrates. The finding is ...
... adverts, the secret of fertility might not be eternal youth. ... Research at the Consejo Superior de Investigaciones Cientficas in Seville, ... have evolved to protect their seeds. His research is published ... Botany ( http://dx.doi.org/10.1093/aob/mcq160 ). Prof. Herrera said: "No ...
Cached Biology News:Wiecha receives grant to study face-to-face vs. virtual health education for African-American women 2Genetic clues to evolution of jaws in vertebrates unearthed by CU-led team 2
(Date:7/11/2014)... Fla. , July 11, 2014 /PRNewswire-iReach/ -- Maxim ... high-quality peptides that are used solely in scientific experiments, ... two successful years in business, Maxim Peptide, which was ... just launched a new and updated website that now ... blog section has been updated with fascinating articles about ...
(Date:7/11/2014)... 11, 2014 BCC Research ( http://www.bccresearch.com ... POLYMERASE CHAIN REACTION (PCR) TECHNOLOGY: GLOBAL MARKETS , the ... reached nearly $140 billion in 2013. This is estimated ... five-year compound annual growth rate (CAGR) of 28.6%. , ... interesting and exciting possibilities within the broader PCR field. ...
(Date:7/11/2014)... , July 11, 2014  Researchers have ... three-dimensional images. The new technology, called Virtual Finger, ... small structures like neurons and synapses using the ... unique technology makes 3D imaging studies orders of ... at an unprecedented level across many areas of ...
(Date:7/10/2014)... 10, 2014 Product and process ... low abundance and are often “lost in the ... , Join presenters Dr. Rowel Tobias, Senior Scientist, ... Anders, Head of Quality at Nanotherapeutics, Inc., to ... can speed detection and quantitation while achieving the ...
Breaking Biology Technology:Maxim Peptide Celebrates Second Anniversary Online with an Updated Website and Special Deals Section 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 3Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2
... Number of ... Jobseekers, ... device and diagnostics job board and career fair,company, will host the ... event will take place at the Minneapolis,Airport Marriott from 11 am ...
... The Board of,Directors of Baxter International Inc. (NYSE: ... share of Baxter common stock., This payment represents ... this year by 30 percent. This quarterly dividend is,payable ... of September 10,2008., Baxter International Inc. develops, manufactures ...
... Poniard,Pharmaceuticals, Inc. (Nasdaq: PARD ), a ... A. Martell, president and chief,operating officer, will participate ... will provide a corporate overview, including a discussion,of ... picoplatin,the Company,s lead product candidate., * Oppenheimer ...
Cached Biology Technology:DeviceSpace(TM) to Host Medical Device and Diagnostics Career Fair in Minneapolis 2Poniard Pharmaceuticals Announces Upcoming Conference Participation 2
... LABTrack provides a familiar interface ... collaboration, and warehousing. The transition from ... nearly transparent. LABTrack contains an ... forms and rules mechanism. These functions ...
... Major Science Major Science MS 300V ... power supply designed to meet most electrophoresis ... use unit. Major Science MS 300V power ... Current to instruments used in electrophoresis. 4 ...
... MAX POWER 500V Programmable Power Supply ... which can handle virtually any application ... current blotting. It is unique in ... The MAX POWER Programmable Power Supply ...
... Science Smart Minis 150V power supply (Cat. ... power supplies designed to meet most electrophoresis ... use unit. The Minis 150V power supply ... Minis Power Supply is designed for individuals ...
Biology Products: