Navigation Links
Glowing films developed by UC San Diego chemists reveal traces of explosives
Date:5/23/2008

New spray-on films developed by UC San Diego chemists will be the basis of portable devices that can quickly reveal trace amounts of nitrogen-based explosives.

Contaminated fingerprints leave dark shadows on the films, which glow blue under ultraviolet light. One of the films can distinguish between different classes of explosive chemicals, a property that could provide evidence to help solve a crime, or prevent one.

A recent episode of CSI: Miami featured the technology, which linked fingerprints left on a video camera to a bomb used in a bank heist, revealing the motive for the robbery. In real life, the security systems company RedXDefense has developed a portable kit based on the technology that security officers could use with minimal training.

Detection relies on fluorescent polymers developed at UCSD by chemistry and biochemistry professor William Trogler and graduate student Jason Sanchez. Its a very intuitive detection method that doesnt require a scientist to run, Trogler said.

Sanchez and Trogler describe the synthesis and properties of their polymers in a forthcoming issue of the Journal of Materials Chemistry.

The polymers emit blue light when excited by ultraviolet radiation. Nitrogen-based explosive chemicals such as TNT quench that glow by soaking up electrons.

Because the polymers fluoresce brightly, no special instruments are needed to read the results. Only a very thin film sprayed on a suspect surface is needed to reveal the presence of a dangerous chemical. A single layer of the polymer, about one thousandth of a gram, is enough to detect minute amounts of some explosives, as little as a few trillionths of a gram (picograms) on a surface a half-foot in diameter. Handling explosives can leave 1,000 times that quantity or more stuck to fingers or vehicles.

The films also adhere directly to potentially contaminated surfaces, making them more sensitive than previous methods, which r
'/>"/>

Contact: Susan Brown
sdbrown@ucsd.edu
858-246-0161
University of California - San Diego
Source:Eurekalert

Page: 1 2

Related biology news :

1. Bright lights: Mystery of glowing antibody solved by Scripps research scientists
2. Films of Mitchell and Kenyon illuminate lefties decline in Victorian England
3. Microbial biofilms evoke Jekyll & Hyde effects
4. Turning on cell-cell communication wipes out staph biofilms
5. MIT crafts bacteria-resistant films
6. A new radiation therapy treatment developed for head and neck cancer patients
7. Model for the assembly of advanced, single-molecule-based electronic components developed at Pitt
8. New southernpeas developed by ARS, cooperators
9. New method developed to identify genetic determinants of Alzheimers disease
10. Biomagnetics developed for use in new breast cancer tests
11. Bioinformatics technology developed at Argonne provides new insight into microbial activities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2015)... , June 23, 2015   Valencell, ... the results of a recent study that illustrates ... the wrist during activity. In a study conducted ... compared along with the Apple Watch against a ... heart rate during activity. The study demonstrated that ...
(Date:6/18/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... commerce market announces that its Wocket® smart wallet will be ... Mark", scheduled to air on WABC Radio (am770) in ... The broadcast air- time for the extensive ... NXT-ID, Inc.,s CEO Gino Pereira will be discussing ...
(Date:6/17/2015)... Calif. , June 17, 2015  Synaptics ... human interface solutions, today announced that Xiaomi, one ... the Synaptics ® ClearPad ® family ... display driver integrated circuits (DDICs) for its latest ... By leveraging ClearPad for full in-cell display solutions ...
Breaking Biology News(10 mins):Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 3Synaptics Touchscreen and Display Driver IC Solutions Power Xiaomi's Latest Flagship Smartphones 2Synaptics Touchscreen and Display Driver IC Solutions Power Xiaomi's Latest Flagship Smartphones 3
... team excavating an ancient Maya village in El Salvador buried ... ancient field of manioc, the first evidence for cultivation of ... field was discovered under roughly 10 feet of ash, said ... excavation of the ancient village of Ceren since its discovery ...
... with its front legs, how do its hind legs know ... issue of Current Biology, a publication of Cell Press, reveals ... a lasting impression. By comparison, feline memories of having just ... researchers found that cats could remember having stepped over a ...
... including jet fuel, gasoline, carbon anodes and heating oil ... coal and refinery by-products, according to a team of ... coal-to-jet fuel work that we have been doing for ... associate at Penn State,s Energy Institute. "Our aim is ...
Cached Biology News:CU-Boulder team discovers first ancient manioc fields in Americas 2CU-Boulder team discovers first ancient manioc fields in Americas 3Tracking feline memories on the move 2Coal-based fuels and products hit the refinery 2
(Date:7/2/2015)... ... 2015 , ... In’Tech Medical SAS ( http://www.intech-medical.com ), a ... the acquisition of Turner Medical, Inc ., thus becoming a global leader ... Spine Industry. The acquisition of Turner Medical ideally supplements In’Tech Medical’s product offering, ...
(Date:7/1/2015)... ... July 01, 2015 , ... The next-generation sequencing (NGS) clinical market is ... the molecular diagnostics industry. BCC Research reveals in its new report that the market ... costs, and a growing need for better diagnostics as part of a molecular diagnostics ...
(Date:7/1/2015)... , July 1, 2015 Isagenix International, ... has earned three Gold, three Silver, and three Bronze ... gala held in Chicago this ... the premier business awards program in the U.S. ... our company,s strength in developing leaders, cultivating talent, creating ...
(Date:7/1/2015)... ... July 01, 2015 , ... NEMA 4 (IP66) Medical ... new Medical Joysticks have an impermeable molecular barrier protection against bio-hazardous agents. ... that will increase healthcare worker safety and reduce financial costs. , CTI Electronics ...
Breaking Biology Technology:In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 3NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3Isagenix Earns Nine American Business Awards 2Isagenix Earns Nine American Business Awards 3Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2
... Institute, the leading provider of specialized training solutions ... subsidiary of Campbell Alliance, today announced the release ... Management Suite of e-courses.  The suite is ... account managers by addressing high-priority topics that drive ...
... from beneficial bacteria found in yogurt and dairy products ... bowel disorders (IBD), suggests a study led by Vanderbilt ... The study, published May 23 in the Journal ... p40, was effective as an intervention in animal models ...
... 2011The Annual Meeting of the American Crystallographic Association (ACA) ... in New Orleans, Louisiana. Crystallography is the science devoted ... solids and in complicated molecules. The study of biomolecules, ... important materials are often calculated by crystallographers using beams ...
Cached Biology Technology:Account Management Training Suite Delivers Two Key Performance Dimensions 2Protein from probiotic bacteria may alleviate inflammatory bowel disorders 2Protein from probiotic bacteria may alleviate inflammatory bowel disorders 3Sulfates in extreme places, DNA tied in knots and magnetic cooling at crystallography meeting 2Sulfates in extreme places, DNA tied in knots and magnetic cooling at crystallography meeting 3Sulfates in extreme places, DNA tied in knots and magnetic cooling at crystallography meeting 4
... polystyrene with frosted labeling surfaces, volume ... counting. 100% integrity tested. Linkage: This ... number, created to easily match Cornings ... yet, please order under the old ...
iNOS/NOS Type II Purified Anti-Mouse, Anti-Rat, Anti-Human clone Polyclonal, Isotype Rabbit Ig, 150 µg Consult technical datasheet for details....
... The high-throughput fluidics (HTF) system, 100-240 V, ... suspension array system that automates delivery of ... into the Bio-Plex array reader. The HTF ... nonpressurized bulk sheath container to constantly maintain ...
... Disposable. Virgin, optically clear polystyrene with ... alphanumeric coordinates for cell counting. 100% ... is a new product number, created ... If showing no availability yet, please ...
Biology Products: