Navigation Links
Explosive breakthrough in research on molecular recognition
Date:2/12/2013

EdmontonEver wonder how sometimes people still get through security with explosives on their person? Research done in the University of Alberta's Department of Chemical and Materials Engineering has revealed a new way to better detect these molecules associated with explosive mixtures.

A team of researchers including post-doctoral fellows Seonghwan Kim, Dongkyu Lee and Xuchen Liu, with research associate Charles Van Neste, visiting professor, Sangmin Jeon from the Pohang University of Science and Technology (South Korea), and Department of Chemical and Materials Engineering professor Thomas Thundat, has found a method of using receptor-free nanomechanical infrared spectroscopy to increase recognition of chemical molecules in explosive mixtures.

Detecting trace amounts of explosives with mixed molecules presents a formidable challenge for sensors with chemical coatings. The nanomechanical infrared spectroscopy used by the Univesity of Alberta research team provides higher selectivity in molecular detection by measuring the photothermal effect of the absorbed molecules.

Thundat, who holds the Canadian Excellence Research Chair in Oil Sands Molecular Engineering, says the spectroscopy looks at the physical nature of the molecule and "even if there are mixed molecules, we can detect specific molecules using this method."

Seonghwan (Sam) Kim explained that conventional sensors based on coatings generally cannot detect specific molecules in complex mixtures if the concentration of interfering molecules is five times greater than the target molecules. The detection sensitivity and selectivity are drastically increased using the high-power infrared laser because the photothermal signal comes from the absorption of infrared photons and nonradiative decay processes. Using this method, a few trillionths of a gram of explosive molecules can now be detected in a complex mixture even if there is a higher concentration of other interfering molecules.

The research team's findings are published in Scientific Reports by Nature Publishing Group on January 23, 2013.

The research team's current work looks at detecting biomolecules and hydrocarbons in the oil industry and nerve gas stimulants (DMMP), which can be found in household radiators, gasoline, and fabric softeners, for example. The team also hopes to develop a hand-held device for chemical detection that could be utilized in fields such as security, health care and environmental protection.


'/>"/>

Contact: Richard Cairney
richard.cairney@ualberta.ca
780-492-4514
University of Alberta
Source:Eurekalert

Related biology news :

1. RATS research may teach rodents to detect explosives
2. Nanotech device mimics dogs nose to detect explosives
3. International Drug & Explosives Detection Company IDenta Corp. Article to be Published by Zillion International
4. Breakthroughs in Chikungunya research from A*STAR spell new hope for better treatment and protection
5. Interventional radiology: Potential breakthrough to treat mens enlarged prostate
6. WanderID Launches Breakthrough ID Product for Children, Seniors
7. Nanotechnology breakthrough could dramatically improve medical tests
8. NTU researchers study little mighty creature for scientific breakthrough
9. Research breakthrough: High brain integration underlies winning performances
10. Breakthrough technology focuses in on disease traits of single cells
11. Forest carbon monitoring breakthrough in Colombia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... , Dec. 1, 2016   SoftServe , ... BioLock , an electrocardiogram (ECG) biosensor analysis ... a key IoT asset. The smart system ensures ... vehicle,s steering wheel and mobile devices to easily ... As vehicle technology advances, so too ...
(Date:11/29/2016)... 2016   Neurotechnology , a provider ... technologies, today released FingerCell 3.0, a software ... that run on low-power, low-memory microcontrollers. FingerCell ... than 128KB of memory, enabling it to ... limited on-board resources, such as: mobile phones, ...
(Date:11/22/2016)... -- According to the new market research report "Biometric System ... Voice), Multi-Factor), Component (Hardware and Software), Function (Contact and Non-contact), Application, and ... expected to grow from USD 10.74 Billion in 2015 to reach USD ... 2022. Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... PUNE, India , December 2, 2016 ... Billion by 2021, growing at a CAGR of 7.3% during the ... segment while hospitals and diagnostic laboratories segment accounted for the largest ... ... Complete report on global immunohistochemistry (IHC) market spread across 225 ...
(Date:11/30/2016)... 2016 /PRNewswire/ - Portage Biotech Inc. ("Portage" or "the ... excited to announce the formation of EyGen, Ltd. ... ophthalmology assets through proof of concept. EyGen,s lead ... Portage Pharmaceuticals Limited and being developed for topical ... anterior segment diseases. This agent has the potential ...
(Date:11/30/2016)... SAN DIEGO and BEIJING ... Ltd., a leading commercial provider of genomic services and ... expertise, announced today that it has completed a USD ... China Merchants Bank Co., Ltd.,s CMB International Capital Management ... SDIC Innovation Investment Management Co., Ltd. ("SDIC Innovation") and ...
(Date:11/30/2016)... ... November 30, 2016 , ... Energetiq Technology, a world leader ... generation, ultra-bright, Laser-Driven Light Source, the EQ-77, at the MRS Fall Exhibit 2016. ... offers higher radiance and irradiance from a truly broadband white light source. The ...
Breaking Biology Technology: