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Nano-sized chip 'sniffs out' explosives far better than trained dogs
Date:7/24/2014

contact. When just a single molecule of an explosive comes into contact with the sensors, it binds with them, triggering a rapid and accurate mathematical analysis of the material.

"Animals are influenced by mood, weather, state of health and working hours, the oversaturation of olfactory system, and much more," said Prof. Patolsky. "They also cannot tell us what they smell. Automatic sensing systems are superior candidates to dogs, working at least as well or better than nature. This is not an easy task, but was achieved through the development of novel technologies such as our sensor."

A Technology for a Safer World

The trace detector, still in prototype, identifies several different types of explosives several meters from the source in real time. It has been tested on the explosives TNT, RDX, and HMX, used in commercial blasting and military applications, as well as peroxide-based explosives like TATP and HMTD. The latter are commonly used in homemade bombs and are very difficult to detect using existing technology.

"Our breakthrough has the potential to change the way hazardous materials are detected, and of course should provide populations with more security," said Prof. Patolsky. "The faster, more sensitive detection of tiny amounts of explosives in the air will provide for a better and safer world."

Tracense has invested over $10M in research and development of the device since 2007, and expects to go to market next year. Prof. Patolsky and his team of researchers are currently performing multiple and extensive field tests of prototype devices of the sensor.


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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

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