Navigation Links
New security and medical sensor devices made possible by metallic nanostructures
Date:4/7/2009

Scientists have designed tiny new sensor structures that could be used in novel security devices to detect poisons and explosives, or in highly sensitive medical sensors, according to research published tomorrow (8 April) in Nano Letters.

The new 'nanosensors', which are based on a fundamental science discovery in UK, Belgian and US research groups, could be tailor-made to instantly detect the presence of particular molecules, for example poisons or explosives in transport screening situations, or proteins in patients' blood samples, with high sensitivity.

The researchers were led by Imperial College London physicists funded by the Engineering and Physical Sciences Research Council. The team showed that by putting together two specific 'nanostructures' made of gold or silver, they can make an early prototype device which, once optimised, should exhibit a highly sensitive ability to detect particular chemicals in the immediate surroundings.

The nanostructures are each about 500 times smaller than the width of a human hair. One is shaped like a flat circular disk while the other looks like a doughnut with a hole in the middle. When brought together they interact with light very differently to the way they behave on their own. The scientists have observed that when they are paired up they scatter some specific colours within white light much less, leading to an increased amount of light passing through the structure undisturbed. This is distinctly different to how both structures scatter light separately. This decrease in the interaction with light is in turn affected by the composition of molecules in close proximity to the structures. The researchers hope that this effect can be harnessed to produce sensor devices.

Lead researcher on the project Professor Stefan Maier from Imperial's Department of Physics, and an Associate of Imperial's Institute for Security Science and Technology, said:

"Pairing up these st
'/>"/>

Contact: Danielle Reeves
danielle.reeves@imperial.ac.uk
44-207-594-2198
Imperial College London
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology technology :

1. ArunA Biomedical Submits Contract Proposal to Further Develop Environmental Biosensor for National Security
2. Midwest Research Institute Expands in Kansas to Support Regional Economic Development in Animal Health, Biosecurity, and Bioenergy Sectors
3. ArunA Biomedical Awarded Department of Defense Contract to Further Develop Environmental Biosensor for National Security
4. Alliance for Biosecurity Testifies Before Congress on Funding for Medical Countermeasure Development
5. PHARMORX Security Introduces New Technology Solutions for Counterfeiting, Grey Market Diversion, Track & Trace
6. Greater Houston Partnership to Lead Energy Security Discussion
7. News Release: Homeland Security to Take Centre Stage with Global Security Asia 2009
8. Proximity Systems LAN Based Electronic Lock Management System Offers Increased Security, Efficiency and Reporting Capability for Wall-Mounted WorkStations
9. DoD Leader to Address Presidential Biometrics Security Directive at NDIA Conference
10. NSD Bio Group, LLC chosen by U.S.-China Economic & Security Review Commission for Report on Chinas High Tech Sectors
11. EntreMed to Present at the New York Society of Security Analysts Industry Conference
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2013)... Ann Arbor, Mich. Every day, their baby stopped ... air to his lungs. April and Bryan Gionfriddo watched ... true. , "Quite a few doctors said he had ... says April Gionfriddo, about her now 20-month-old son, Kaiba. ... work, we would take it and run with it." ...
(Date:5/23/2013)... 2013 Graphite Metallizing Corporation announces ... mounted in stainless steel pillow blocks. This series ... with the application and installation versatility of pillow ... work exceptionally well when submerged in water, ... such as acids, alkalies, hydrocarbons, black liquor, and ...
(Date:5/23/2013)... (PRWEB) May 23, 2013 The maker ... all types of inventions. They focus on learning practical ... this community gravitate toward bringing their ideas to life ... Biology Movement, works on making projects using biology. Glowing ... of plants to make them glow with bioluminescence genes, ...
(Date:5/23/2013)... Virobay, Inc. today announced that their development ... important milestone, as Virobay has now initiated a Phase ... S inhibitor.   The first Phase 1 ... designed to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics ... "The initiation of this Phase 1 trial with ...
Breaking Biology Technology:Baby's life saved with groundbreaking 3-D printed device that restored his breathing 2Baby's life saved with groundbreaking 3-D printed device that restored his breathing 3Graphite Metallizing Now Offers GRAPHALLOY® Stainless Steel Pillow Blocks for Success in Submersible Applications 2Graphite Metallizing Now Offers GRAPHALLOY® Stainless Steel Pillow Blocks for Success in Submersible Applications 3Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home 2Virobay, Inc. initiates a Phase 1 Trial of VBY-036, a compound intended for the treatment of neuropathic pain 2Virobay, Inc. initiates a Phase 1 Trial of VBY-036, a compound intended for the treatment of neuropathic pain 3
... May 13 Based on its recent analysis ... Precision Biosciences with the 2009 North American Frost ... Year. The company,s radical Directed Nuclease Editor(TM) (DNE) ... of a cell,s genome with high sequence specificity. ...
... Clinical Pathology (ASCP) has joined the American Civil Liberties ... patents on human genes -- specifically, patents covering the ... and ovarian cancer. The lawsuit was filed against ... Directors of the University of Utah Research Foundation in ...
... /PRNewswire-FirstCall/ - Medicago Inc. (TSX-V: MDG), a biotechnology ... vaccines based on proprietary manufacturing technologies and Virus-Like ... expressed a new VLP antigen ("H1 VLP") from ... recent Influenza outbreak in North America and other ...
Cached Biology Technology:Frost & Sullivan Awards Precision Biosciences for Technology Innovation and Molecular Design Process in the Genomics Market 2Frost & Sullivan Awards Precision Biosciences for Technology Innovation and Molecular Design Process in the Genomics Market 3Frost & Sullivan Awards Precision Biosciences for Technology Innovation and Molecular Design Process in the Genomics Market 4ASCP Joins ACLU Lawsuit Opposing Gene Patents 2ASCP Joins ACLU Lawsuit Opposing Gene Patents 3Medicago succesfully expresses VLP antigen for A H1N1 strain 2
(Date:5/23/2013)... The tight wrapping of genomic DNA around nucleosomes ... gene expression. A team of Ludwig-Maximilians-Universitaet (LMU) in ... DNA to be locally displaced from nucleosomes for ... is stored in the cell nucleus, wrapped around ... pairs of four different histone proteins and accommodating ...
(Date:5/23/2013)... cerebral palsy with autologous cord blood. Following a cardiac ... boy had been in a persistent vegetative state ... treatment with the cord blood containing stem cells, the ... learned to speak simple sentences and to move. "Our ... the long-held doubts about the effectiveness of the new ...
(Date:5/23/2013)... Wis. In an age when microbial pathogens are ... tamp down infection, a team of Wisconsin scientists has ... curbing the bacteria that cause staph infections. , Writing ... Society , a group led by University of Wisconsin-Madison ... with the "quorum sensing" behavior of Staphylococcus aureus ...
Breaking Biology News(10 mins):Biochemistry: Unspooling DNA from nucleosomal disks 2First successful treatment of pediatric cerebral palsy with autologous cord blood 2University of Wisconsin chemists find new compounds to curb staph infection 2
... COLLEGE STATION A joke among two Texas ... found Viagra can aid fetal development in female sheep. ... can serve as an excellent animal model for studying ... Viagra (sildenafil citrate), which is used to treat male ...
... HEALTH CARE - Maximizing mammography . . . ... a technology being developed by researchers at Oak Ridge National ... allow doctors to quickly identify trends specific to an individual ... of known cancerous and pre-cancerous conditions. "Our goal is to ...
... LA JOLLA, CA February 3, 2010 For Immediate ... Institute has identified two compounds that act on novel binding ... (HIV), the virus that causes AIDS. The discovery lays the ... drugs to enhance existing therapies, treat drug-resistant strains of the ...
Cached Biology News:Study shows male erectile dysfunction drug enhances fetal growth in female sheep 2Story tips from the US Department of Energy’s Oak Ridge National Laboratory February 2010 2Story tips from the US Department of Energy’s Oak Ridge National Laboratory February 2010 3Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 2Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 3Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 4Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 5
... Express Cloning Checker Kits provide two ... after transformation without time-consuming plasmid preparation. By ... I, all you need to do is ... bacteria directly from the transformation plates into ...
... perfusion system. For real-time or pre-programmed ... electrochemistry, or general liquid-handling research applications. ... accuracy Run experiments automatically - ... and flexibility Turnkey perfusion system ...
... GenBank Accession Number : NM_006225 ... fusion protein corresponding to full length rat ... 7.4, 0.15M NaCl, 0.05% sodium azide before ... Assurance: routinely evaluated by immunoblot on RIPA ...
...
Biology Products: