Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > Building miniature 'noses' to sniff explosives

October 19th, 2007

Building miniature 'noses' to sniff explosives

Abstract:
It's no secret that a dog's nose is hundreds of times more sensitive than our own olfactory systems. For this reason, humans have long relied upon their four-legged friends to track and detect odors for security, sustenance and survival.

While artificial "noses" have been built to sense malicious chemicals and substances, such as explosives, none has proven quite up to snuff with the canines sniffer in terms of accuracy or ability.

In pursuit of that interminable nose, researchers have turned to nanoscience. They have uncovered ways to detect molecules using tiny sensors called microcantilevers.

Made of silicon, microcantilevers look like miniature diving boards that are 100 microns long, one micron thick and 20 microns wide, says Thomas Thundat, senior scientist at the Oak Ridge National Laboratory who is credited with discovering how the devices can detect chemicals. Up to 40 microcantilevers can fit on a computer chip 3 mm across - smaller than the average pinkie fingernail.

Source:
smalltimes.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Sensors

Executives Explore Key Megatrends and Innovations in MEMS, Sensors, Imaging Tech at SEMI-MSIG European Summits: Speakers to share developments in smart automotive, smart cities, smart industrial, biomedical, consumer and IoT, September 19-21, 2018 in Grenoble, France June 19th, 2018

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

New optical sensor can determine if molecules are left or right 'handed' June 13th, 2018

A nanotech sensor that turns molecular fingerprints into bar codes June 7th, 2018

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Collaboration yields discovery of 12-sided silica cages June 20th, 2018

Carbon nanotube optics poised to provide pathway to optical-based quantum cryptography and quantum computing: Researchers are exploring enhanced potential of carbon nanotubes for unique applications June 18th, 2018

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

Military

Powering the 21st Century with Integrated Photonics: UCSB-Led Team Selected for Demonstration of a Novel Waveguide Platform Which is Transparent Throughout the MWIR and LWIR Spectral Bands June 19th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

Rare element to provide better material for high-speed electronics May 30th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project