HOME >> BIOLOGY >> NEWS
ORNL nanoprobe creates world of new possibilities

OAK RIDGE, Tenn., July 14, 2004 -- A technology with proven environmental, forensics and medical applications has received a shot in the arm because of an invention by researchers at the Department of Energy's Oak Ridge National Laboratory.

ORNL's nanoprobe, which is based on a light scattering technique, can detect and analyze chemicals, explosives, drugs and more at a theoretical single-molecule level. This capability makes it far more selective and accurate than conventional competing technologies.

The probe is an optical fiber tapered to a tip measuring 100 nanometers with an extremely thin coating of nanoparticles of silver, which induces the surface-enhanced Raman scattering (SERS) effect. Normally, when a sample is illuminated by a laser beam, there is a small reflection of light, known as Raman scattering. The light shows vibration energies, which are unique to each compound, and that information allows scientists to identify the substance.

With the SERS nanoprobe, the laser light creates rapid oscillations of the electrons in the silver nanoparticles, which produce an enormous electromagnetic field that contributes to increase the Raman scattering signal. The ORNL nanoprobe works with any surface to induce the SERS effect.

"The significance of this work is that we are now able to perform direct analysis of samples -- even dry samples -- with no preparation of the surface," said ORNL's Tuan Vo-Dinh, who leads a team that developed the nanoprobe. "Also, the small scale of the nanoprobe demonstrates the potential for detection in nanoscale environments, such as at the intracellular level."

Ordinarily, surface-enhanced Raman scattering analysis of samples on a surface requires modification or treatment of the sample. This may consist of physically removing the sample and diluting it in a liquid containing silver nanoparticles; however, this practice is unnecessary with the ORNL nanoprobe.

Vo-Dinh and Life Sciences
'"/>

Contact: Ron Walli
wallira@ornl.gov
865-576-0226
DOE/Oak Ridge National Laboratory
14-Jul-2004


Page: 1 2

Related biology news :

1. Electrodes and nanoprobes signal new DNA detection method
2. UAB creates the first Internet server to search for genetic diversity
3. Scientists discover how anthrax creates its deadly spores
4. Ohio State creates first gene chip for horse
5. Philippines: Park expansion creates nations largest contiguous protected area
6. Packard Childrens Hospital gift creates new biotech research center for childrens health
7. Laboratory theme park re-creates RNA world for study
8. Gene loss creates age- and gender-dependent cancer syndrome in mice
9. Gift creates KSU Human Origins Study Institute
10. Purdue creates self-generating nanotubes with dial-up properties
11. Razing old dams solves some problems, creates new ones

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: ORNL nanoprobe creates world new possibilities

(Date:8/20/2015)... CLARA, Calif. , Aug. 20, 2015 /PRNewswire/ ... company focused on improving the user experience and ... and vision technologies, today announced that its ... voice biometric authentication software to be FIDO ... tested TrulySecure for compliance with the FIDO UAF ...
(Date:8/18/2015)... DUBLIN , Aug. 17, 2015 ... the addition of the "Global Biometric Authentication ... Application - Estimation & Forecast, 2015-2020" report ... biometric authentication and identification systems market is expected ... from 2015 to 2020 and generate over $25 ...
(Date:8/12/2015)... 2015  New research unveiled at Black Hat ... to steal users, fingerprints. Information released today by ... scanners on mobile devices, making the security of ... on mobile devices, HYPR Corp. recently released a ... systems with strong cryptographic security. More information on ...
Breaking Biology News(10 mins):TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 2HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 3
(Date:8/27/2015)... , Aug. 27, 2015 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ... and six-month periods ended June 30, 2015. Biorem,s complete second quarter ... ). FINANCIAL HIGHLIGHTS: in ,000,s except earnings per shareThree-months ended ... 2014 , 2015 , 2014 Revenue ... , 4,433 Gross profit , 1,656 , ...
(Date:8/27/2015)... ... 27, 2015 , ... METTLER TOLEDO's web-based EasyFinder™ ... choices to a manageable shortlist of bench and floor scales and terminals. Specifying ... best with the customer’s industry and application. , Side-by-side product comparisons and ...
(Date:8/26/2015)... - iCo Therapeutics ("iCo" or "the Company") (TSX-V: ICO) ... quarter ended June 30, 2015. Amounts, unless specified ... under International Financial Reporting Standards ("IFRS"). ... Oral Amp B program, rapidly advancing towards the ... Rae , President & CEO of iCo Therapeutics. "We ...
(Date:8/26/2015)... FRANCISCO , Aug. 26, 2015  Platform ... that it has received a $1.5M Phase II ... (NIH) to further develop its therapeutic agent to ... clinical need in end stage renal disease (ESRD) ... the National Institute of Diabetes and Digestive and ...
Breaking Biology Technology:BIOREM Reports $718,000 Net Earnings for the Second Quarter 2BIOREM Reports $718,000 Net Earnings for the Second Quarter 3METTLER TOLEDO Updates Online Scale Selection Tool 2iCo Therapeutics Announces Second Quarter 2015 Financial Results 2iCo Therapeutics Announces Second Quarter 2015 Financial Results 3Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 2Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 3
Cached News: