Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Nano Sensor Detects Minute Traces of Plastic Explosives

Abstract:
Working in collaboration with the RhineMain Polytechnic, materials scientists at the TU Darmstadt have developed an extremely sensitive explosives sensor that is capable of detecting even slight traces of the high-explosive chemical compound pentaerythritol tetranitrate (PETN). Terrorists had employed PETN in several attacks on commercial aircraft.

Nano Sensor Detects Minute Traces of Plastic Explosives

Germany | Posted on July 26th, 2011

To date, the high-explosive chemical compound PETN could be detected exclusively by means of wipe tests and an ion-mobility spectrometer. However, since conducting such tests involves considerable time and effort, it is employed at airports for spot-checking only. Airport scanners and dogs trained to sniff out explosives have a hard time detecting PETN, since PETN is only slightly volatile and therefore liberates only small numbers of molecules into the ambient air. PETN is also a high explosive. Just a few grams are enough to totally destroy a medium-sized passenger car. Thanks to those properties, PETN has recently been frequently employed by terrorists. PETN was found in the package bombs that were intended to blow up cargo planes late last year and was also employed by the "underpants bomber" in his attempted attack on a passenger plane in December 2009.

Scientists at the TU‑Darmstadt have recently developed a nanosensor capable of detecting a single PETN‑molecule among ten billion air molecules. Explaining the new type of explosive detector's operation, Dipl.‑Ing. Mario Boehme stated that, "If a PETN‑molecule enters the sensor's nanotube, the nitro groups characteristic of PETN adhere to its surface and change its electrical conductivity, and that change may be detected by electronic instrumentation."

Checking for explosives without spending more time in the process

In order to detect PETN using the new sensor, all that is necessary is conducting ambient air across the sensor. Boehme added that, "One possibility would be equipping the conventional metal detectors and X‑ray machines employed at airport security checkpoints with the new sensor and a device for inducting air." That approach would allow discreetly checking all passengers and their luggage for explosives without spending more time in the process. He went on to state that, "However, another possibility would be utilizing a hand-held device similar to a table vacuum cleaner that would allow checking individual passengers." Since the sensors are extremely small and inexpensive to manufacture, he can also envision employing them at sports events or in other types of security checks. He and his research associates are currently seeking industrial collaboration partners.

####

For more information, please click here

Contacts:
Jörg Feuck
+49 6151 16-2063


Sandra Siebert
Tel.: +49(0)6151–16 2750
FAX: +49(0)6151–16 4128

Copyright © AlphaGalileo

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Building a smart cardiac patch: 'Bionic' cardiac patch could one day monitor and respond to cardiac problems June 28th, 2016

New, better way to build circuits for world's first useful quantum computers June 28th, 2016

Yale researchers’ technology turns wasted heat into power June 27th, 2016

FEI Launches Helios G4 DualBeam Series for Materials Science: The Helios G4 DualBeam Series features new capabilities to enable scientists and engineers to answer the most demanding and challenging scientific questions June 27th, 2016

Sensors

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Artificial synapse rivals biological ones in energy consumption June 21st, 2016

A new form of hybrid photodetectors with quantum dots and graphene June 19th, 2016

Drum beats from a one atom thick graphite membrane June 15th, 2016

Discoveries

Building a smart cardiac patch: 'Bionic' cardiac patch could one day monitor and respond to cardiac problems June 28th, 2016

New, better way to build circuits for world's first useful quantum computers June 28th, 2016

Yale researchers’ technology turns wasted heat into power June 27th, 2016

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Announcements

Building a smart cardiac patch: 'Bionic' cardiac patch could one day monitor and respond to cardiac problems June 28th, 2016

New, better way to build circuits for world's first useful quantum computers June 28th, 2016

Yale researchers’ technology turns wasted heat into power June 27th, 2016

FEI Launches Helios G4 DualBeam Series for Materials Science: The Helios G4 DualBeam Series features new capabilities to enable scientists and engineers to answer the most demanding and challenging scientific questions June 27th, 2016

Homeland Security

Team builds first quantum cascade laser on silicon: Eliminates the need for an external light source for mid-infrared silicon photonic devices or photonic circuits April 21st, 2016

Nanoporous material's strange "breathing" behavior April 7th, 2016

Sniffing out a dangerous vapor: University of Utah engineers develop material that can sense fuel leaks and fuel-based explosives March 28th, 2016

Detecting and identifying explosives with single test December 10th, 2015

Military

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Scientists engineer tunable DNA for electronics applications June 21st, 2016

Marrying superconductors, lasers, and Bose-Einstein condensates: Chapman University Institute for Quantum Studies (IQS) member Yutaka Shikano, Ph.D., recently had research published in Scientific Reports June 20th, 2016

Research partnerships

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

FEI and University of Liverpool Announce QEMSCAN Research Initiative: University of Liverpool will utilize FEI’s QEMSCAN technology to gain a better insight into oil and gas reserves & potentially change the approach to evaluating them June 22nd, 2016

Tailored DNA shifts electrons into the 'fast lane': DNA nanowire improved by altering sequences June 22nd, 2016

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




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic