Navigation Links
Researchers improve technology to detect hazardous chemicals
Date:11/20/2012

Scientists at Imperial College London have developed a system to quickly detect trace amounts of chemicals like pollutants, explosives or illegal drugs.

The new system can pick out a single target molecule from 10 000 trillion water molecules within milliseconds, by trapping it on a self-assembling single layer of gold nanoparticles.

The team of scientists, all from the Department of Chemistry at Imperial, say this technology opens the way to develop devices that are compact, reusable and easy to assemble, and could have a range of uses including detecting illegal drugs, explosives, pollutants in rivers or nerve gases released into the air. Results of the research are published this week in Nature Materials.

In one potential use, such a device could detect tiny traces of explosives or other illegal substances left behind by criminals on the surfaces they touch. The advances made by this team would help law enforcers to identify and deal with such activities involving illegal substances.

Research co-author, Michael Cecchini, said: "Our system could solve a key problem of reliable and portable chemical testing for use in the outside world. It is very sensitive and could well be used to look for very small amounts of a specific molecule even in busy, public areas."

The target molecules are identified by an effect called Surface Enhanced Raman Scattering (SERS) of light. This technique, which has been around since the late 1970's, works because each molecule scatters light in a unique way. Previous research has shown that the signal can be amplified by catching molecules in a particular way on a layer of metal nanoparticles. However, these sheets are complex to manufacture.

The scientists overcame this problem by dealing with interfaces of two liquids that do not mix, such as water and oil, or water and air interface. By manipulating the electrical charge of the gold nanoparticles and the composition
'/>"/>

Contact: Simon Levey
s.levey@imperial.ac.uk
44-020-759-46702
Imperial College London
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. New England Biolabs Introduces Polbase, an Information Repository of Scientific Data for Polymerase Researchers
2. In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
3. Multidisciplinary team of researchers develop world’s lightest material
4. Researchers shrink tumors and minimize side effects using tumor-homing peptide to deliver treatment
5. Innovative MetaMorph® NX Software Shatters Barriers Between Researchers and Image Analysis Goals with Exclusive Visual Workflow
6. UCLA researchers demonstrate fully printed carbon nanotube transistor circuits for displays
7. Penn and Brown researchers demonstrate earthquake friction effect at the nanoscale
8. Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public
9. Researchers develop one of the worlds smallest electronic circuits
10. MU researchers identify key plant immune response in fight against bacteria
11. Researchers realize high-power, narrowband terahertz source at room temperature
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers improve technology to detect hazardous chemicals
(Date:1/22/2015)... 2015 Controlled Substance Compliance Services (CSCS), ... companies check the legal requirements around using controlled substances ... , As their international operations expand and become ... solutions built as a result of the first phase ...
(Date:1/22/2015)... Jersey , 22 de enero de 2015  El Dr. ... hoy su llamada a nominaciones para 2015. Este prestigioso ... hecho, o tiene el potencial para hacer, contribuciones destacadas ... se aceptarán hasta el 15 de marzo de 2015 ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision medicine ... to enable the broad use of genomic, imaging and other ... appointment of Michelle Munson , CEO of Aspera, an ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 "We ...
(Date:12/24/2014)... 2014  United Therapeutics Corporation (NASDAQ: UTHR ) ... ) has submitted a pre-market approval application to the ... of Medtronic,s SynchroMed ® II implantable drug infusion ... United Therapeutics, Remodulin ® (treprostinil) Injection delivered intravenously ...
Breaking Biology Technology:Global Compliance Service for Controlled Substances to Expand to China 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4GenoSpace Expands Board with Appointment of Michelle Munson 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... Aug. 7 SyntheMed, Inc. (OTC Bulletin Board: SYMD), ... of anti-adhesion products, announced today that REPEL-CV Bioresorbable Adhesion ... National Association for Children,s Heart Disorders, Inc. Michelle L. ... to inform parents of children with congenital heart defects ...
... , BOTHELL, Wash., Aug. 7 SCOLR Pharma, ... for the three and six months ended June 30, 2009. ... President and CEO, said, "We continue to advance discussions with a ... potential partners have been committing resources to due diligence and preliminary ...
... EXTON, Pa., Aug. 7 Kensey Nash Corporation today ... distribution rights, along with the trademark, inventory and other ... line. Under the terms of the agreement, the Company ... OsseoFit distribution agreement. Pursuant to the agreement, following a ...
Cached Biology Technology:REPEL-CV(TM) Adhesion Barrier Receives Endorsement of Kids With Heart 2SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 2SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 3SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 4SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 5SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 6SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 7SCOLR Pharma, Inc. Reports Second Quarter 2009 Financial Results 8Kensey Nash Announces Agreement to Acquire Rights to OsseoFit Product 2Kensey Nash Announces Agreement to Acquire Rights to OsseoFit Product 3
(Date:1/22/2015)... , Jan. 9, 2015 Valid S.A. ("Company") (BM&FBOVESPA: ... market in general the State of Washington,s ... for a new enrollment and central issuance system for driver,s ... The project planning and development will start in ...
(Date:1/22/2015)... 15, 2015  BellBrook Labs, a leader in high ... launch of a TR-FRET (time resolved Forster resonance ... Assay, a high throughput screening assay for glycosyltransferases ... allow for sensitive detection of hundreds of human ...
(Date:1/22/2015)... , Jan. 21, 2015  Analyst Report Issued by Small ... Brands report showed that planet-wide, transactions at merchants on the ... the total number of credit, debit, and prepaid cards reached ... were victims of fraudulent card usage in 2012, and credit ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2
... inexpensive land along coastlines for vacation homes and tourist hotels. ... that threatens the very coral reefs attracting tourists in the ... Research Institute and colleagues find that bacteria on coral reefs ... in seawater increases. , "I set up a seawater system ...
... Garvan Institute, in collaboration with Spanish scientists, have formulated ... normal growth controls, which may have far-reaching implications for ... found large regions of DNA are 'switched off' in ... the Garvan Institute, says: "These large regions ?referred to ...
... multifaceted study involving the Kuna Indians of Panama, ... chemical compound that is, in part, responsible, for ... chocolate products. , The researchers, who are from ... of Duesseldorf, Germany; and Harvard Medical School, hope ...
Cached Biology News:Cancer cells suppress large regions of DNA by a reversible process that can be tackled 2Heart-healthy compound in chocolate identified 2
Rad 50 Immunogen: c-terminal mRad 50 (604 amino acids). Storage: 4 C...
...
... Materials for 15-20 enhancements when used as directed, ... Enhancement System is designed to amplify the desired signal ... for evaluating proteins with low expression., ... to blocking the membrane; 1x solution; 250 ml, ...
Applications: Western blotting ...
Biology Products: