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

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Oxford Instruments Asylum Research Introduces the MFP-3D InfinityTM AFM Featuring Powerful New Capabilities and Stunning High Performance April 18th, 2014

Conductive Inks: booming to $2.8 billion by 2024 April 17th, 2014

Sensors

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Biologists Develop Nanosensors to Visualize Movements and Distribution of Plant Stress Hormone April 15th, 2014

LetiDays Grenoble to Present Multiple Perspectives on Development, Challenges and Markets for the IoT April 14th, 2014

In latest generation of tiny biosensors, size isn't everything: UCLA researchers overturn conventional wisdom on nanowire-based diagnostic devices April 11th, 2014

Discoveries

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Thinnest feasible membrane produced April 17th, 2014

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

Announcements

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Oxford Instruments Asylum Research Introduces the MFP-3D InfinityTM AFM Featuring Powerful New Capabilities and Stunning High Performance April 18th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Homeland Security

Nanotube coating helps shrink mass spectrometers March 25th, 2014

Bionic plants: Nanotechnology could turn shrubbery into supercharged energy March 16th, 2014

Detecting Bioterrorism: Is Chemistry Enough? Los Alamos scientist addresses bioaerosol risks and detection March 12th, 2014

Colored diamonds are a superconductor’s best friend March 6th, 2014

Military

'Exotic' material is like a switch when super thin April 18th, 2014

Tiny particles could help verify goods: Chemical engineers hope smartphone-readable microparticles could crack down on counterfeiting April 15th, 2014

Targeting cancer with a triple threat: MIT chemists design nanoparticles that can deliver three cancer drugs at a time April 15th, 2014

Scalable CVD process for making 2-D molybdenum diselenide: Rice, NTU scientists unveil CVD production for coveted 2-D semiconductor April 8th, 2014

Research partnerships

Novel stapled peptide nanoparticle combination prevents RSV infection, study finds April 17th, 2014

Scientists Capture Ultrafast Snapshots of Light-Driven Superconductivity: X-rays reveal how rapidly vanishing 'charge stripes' may be behind laser-induced high-temperature superconductivity April 16th, 2014

Scalable CVD process for making 2-D molybdenum diselenide: Rice, NTU scientists unveil CVD production for coveted 2-D semiconductor April 8th, 2014

Carbon nanotubes grow in combustion flames April 1st, 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