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

Dartmouth team creates new method to control quantum systems May 24th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Attosecond physics: A switch for light-wave electronics May 24th, 2016

Supercrystals with new architecture can enhance drug synthesis May 24th, 2016

Sensors

Dartmouth team creates new method to control quantum systems May 24th, 2016

Electronic device detects molecules linked to cancer, Alzheimer's and Parkinson's: An inexpensive portable biosensor has been developed by researchers at Brazil's National Nanotechnology Laboratory with FAPESP's support May 20th, 2016

Making organs transparent to improve nanomedicine (video) May 13th, 2016

Scientists take a major leap toward a 'perfect' quantum metamaterial: Berkeley Lab, UC Berkeley researchers lead study that uses trapped atoms in an artificial crystal of light May 13th, 2016

Discoveries

Dartmouth team creates new method to control quantum systems May 24th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Attosecond physics: A switch for light-wave electronics May 24th, 2016

Supercrystals with new architecture can enhance drug synthesis May 24th, 2016

Announcements

Dartmouth team creates new method to control quantum systems May 24th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Attosecond physics: A switch for light-wave electronics May 24th, 2016

Supercrystals with new architecture can enhance drug synthesis May 24th, 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

Nanoscale Trojan horses treat inflammation May 24th, 2016

Programmable materials find strength in molecular repetition May 23rd, 2016

Rice de-icer gains anti-icing properties: Dual-function, graphene-based material good for aircraft, extreme environments May 23rd, 2016

UW researchers unleash graphene 'tiger' for more efficient optoelectronics May 16th, 2016

Research partnerships

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Mille-feuille-filter removes viruses from water May 19th, 2016

Carnegie Mellon develops bio-mimicry method for preparing and labeling stem cells: Method allows researchers to prepare mesenchymal stem cells and monitor them using MRI May 19th, 2016

The CEA Announces Expanded Collaboration with Intel to Advance Cutting-edge Research and Innovation in Key Digital Areas May 17th, 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