Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

New pricing report for bulk graphene materials September 13th, 2014

Berkeley Lab Licenses Boron Nitride Nanotube Technology: New material has unique mechanical and electronic properties September 13th, 2014

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

Sensors

First Colloid and Polymer Science Lecture awarded to Orlin D. Velev: Chemical engineer honored for outstanding research in colloid science September 12th, 2014

UT Arlington research uses nanotechnology to help cool electrons with no external sources September 11th, 2014

Development of Algorithm for Accurate Calculation of Average Distance Travelled by Low-Speed Electrons without Energy Loss that Are Sensitive to Surface Structure September 11th, 2014

Layered graphene sandwich for next generation electronics September 8th, 2014

Discoveries

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

Boosting armor for nuclear-waste eating microbes September 12th, 2014

Ceramics don't have to be brittle: Caltech materials scientists are creating materials by design September 11th, 2014

Researchers Create World’s Largest DNA Origami September 11th, 2014

Announcements

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

New pricing report for bulk graphene materials September 13th, 2014

Berkeley Lab Licenses Boron Nitride Nanotube Technology: New material has unique mechanical and electronic properties September 13th, 2014

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

Homeland Security

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

Watching Schrödinger's cat die (or come to life): Steering quantum evolution & using probes to conduct continuous error correction in quantum computers July 30th, 2014

Production of Toxic Gas Sensor Based on Nanorods July 28th, 2014

Nano-sized Chip "Sniffs Out" Explosives Far Better than Trained Dogs: TAU researcher's groundbreaking sensor detects miniscule concentrations of hazardous materials in the air July 23rd, 2014

Military

Seeking Nanoscale Defenses for Biological and Chemical Threats: WPI co-organizes a NATO workshop to improve the detection and decontamination of biological and chemical agents September 13th, 2014

UT Arlington research uses nanotechnology to help cool electrons with no external sources September 11th, 2014

Penn Engineers Advance Understanding of Graphene’s Friction Properties September 10th, 2014

Light detector to revolutionise night vision technology September 8th, 2014

Research partnerships

NEI Corporation and PneumatiCoat Technologies Sign Agreement to Jointly Develop and Market New Materials for Lithium-ion Batteries September 12th, 2014

Advanced Light Source Sets Microscopy Record| Berkeley Lab Researchers Achieve Highest Resolution Ever with X-ray Microscopy September 11th, 2014

Researchers Create World’s Largest DNA Origami September 11th, 2014

Development of Algorithm for Accurate Calculation of Average Distance Travelled by Low-Speed Electrons without Energy Loss that Are Sensitive to Surface Structure September 11th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE