Navigation Links
Detecting trace amounts of explosives with light
Date:7/10/2014

University of Adelaide research may help in the fight against terrorism with the creation of a sensor that can detect tiny quantities of explosives with the use of light and special glass fibres.

Published in the journal Sensors and Actuators B: Chemical, the researchers describe a novel optical fibre sensor which can detect explosives in concentrations as low as 6.3 ppm (parts per million). It requires an analysis time of only a few minutes.

"Traditionally explosives detection has involved looking for metals that encase them such as in land mines," says project leader Dr Georgios Tsiminis, from the University's Institute for Photonics and Advanced Sensing.

"In today's world, however, homemade improvised explosive devices will often have no metal in them so we need to be able to detect the explosive material itself. This can be difficult as they often don't interact with chemicals and we don't want them near electricity in case they explode."

Instead, the researchers are using a plastic material which emits red light when illuminated with green laser light and the amount of red light it emits is reduced by the presence of explosives.

Three minute holes at the core of specially manufactured optical fibres are coated with the plastic or polymer material in a thin layer. The explosives sample is drawn up the holes in the fibre by capillary action and the amount of red light emitted measured.

"This has high sensitivity and we can detect tiny quantities of an explosive in a small sample," says Dr Tsiminis, who is an Australian Research Council Super Science Fellow. "And not only do we know if explosives are there, we can quantify the amount of explosive by looking at how the light emission changes over time."

Dr Tsiminis says the sensor is ideal for forensics investigations to determine whether explosives have been present in a particular location. It's inexpensive, quick and easy to use and could be done on site to detect trace amounts of explosive.

"What I like about this technology is that it has a lot of complicated physics underlying it, but it is really a very simple concept," Dr Tsiminis says.

"It also requires very little explosives present so is very sensitive. So forensic investigators would be able to take swabs from various surfaces, place them in some organic solvent and, within a few minutes, know if there have been explosives present."


'/>"/>

Contact: Dr. Georgios Tsiminis
georgios.tsiminis@adelaide.edu.au
61-428-22362
University of Adelaide
Source:Eurekalert

Related biology technology :

1. Sequenom Announces Issuance Of European Patent For Novel Methods Of Detecting Fetal Aneuploidy
2. Exclusive News From ARD German TV News Programme: New Methods for Detecting Anabolic Steroids Lead to Hundreds of Positive Doping Tests
3. Donations Required to Finalize Development of Cancer Detecting Breath Device
4. Japan Bioinformatics Announces Release of a Case Study on Detecting SNPs and Short INDELs
5. Safety reflector technology from footwear getting new life in detecting bioterror threats
6. Sequenom, Inc. Announces Issuance Of Patent For Methods Of Detecting Fetal Aneuploidy
7. CONRAD presents new technology combining contraception, HIV and herpes simplex virus-2 prevention
8. Trace Oxygen Analyzer for Measuring PPM O2 in an Inert Gas Purifier
9. Masy Systems Adds Scott Suttinger as Product Manager of DataTrace Dataloggers and Equipment Rentals
10. Contraceptives Market is Expected to Reach USD 23.3 Billion Globally in 2018: Transparency Market Research
11. Plandai Biotechnology, Inc. Enters Into License Agreement With Phyto Nutricare To Develop Nutraceutical Products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/10/2017)... -- International research firm Parks Associates announced today that ... TMA 2017 Annual Meeting , October 11 in Scottsdale, Arizona ... market and how smart safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase ... "The residential security market has experienced continued growth, ...
(Date:10/9/2017)... , Oct. 9, 2017  BioTech Holdings announced ... by which its ProCell stem cell therapy prevents ... ischemia.  The Company, demonstrated that treatment with ProCell ... limbs saved as compared to standard bone marrow ... HGF resulted in reduction of therapeutic effect.  ...
(Date:10/9/2017)... (PRWEB) , ... October 09, ... ... published on October 5, 2017, in the medical journal, Epilepsia, Brain Sentinel’s ... the gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) using ...
(Date:10/6/2017)... (PRWEB) , ... October 06, 2017 , ... ... entrepreneurship within the healthcare and technology sector at their fourth annual Conference where ... featuring 30 inspiring speakers and the ELEVATE pitch competition showcasing early stage digital ...
Breaking Biology Technology:
(Date:4/3/2017)... 2017  Data captured by IsoCode, IsoPlexis ... a statistically significant association between the potency ... and objective response of cancer patients post-treatment. ... whether cancer patients will respond to CAR-T ... as to improve both pre-infusion potency testing and ...
(Date:3/30/2017)... KONG , March 30, 2017 The ... a system for three-dimensional (3D) fingerprint identification by adopting ground breaking ... into a new realm of speed and accuracy for use in ... at an affordable cost. ... ...
(Date:3/29/2017)... , March 29, 2017  higi, the health ... in North America , today announced ... and the acquisition of EveryMove. The new investment and ... set of tools to transform population health activities through ... lifestyle data. higi collects and secures data ...
Breaking Biology News(10 mins):