Navigation Links
Princeton engineers make breakthrough in ultra-sensitive sensor technology
Date:3/21/2011

Princeton researchers have invented an extremely sensitive sensor that opens up new ways to detect a wide range of substances, from tell-tale signs of cancer to hidden explosives.

The sensor, which is the most sensitive of its kind to date, relies on a completely new architecture and fabrication technique developed by the Princeton researchers. The device boosts faint signals generated by the scattering of laser light from a material placed on it, allowing the identification of various substances based on the color of light they reflect. The sample could be as small as a single molecule.

The technology is a major advance in a decades-long search to identify materials using Raman scattering, a phenomena discovered in the 1920s by an Indian physicist, Chandrasekhara Raman, where light reflecting off an object carries a signature of its molecular composition and structure.

"Raman scattering has enormous potential in biological and chemical sensing, and could have many applications in industry, medicine, the military and other fields," said Stephen Y. Chou, the professor of electrical engineering who led the research team. "But current Raman sensors are so weak that their use has been very limited outside of research. We've developed a way to significantly enhance the signal over the entire sensor and that could change the landscape of how Raman scattering can be used."

Chou and his collaborators, electrical engineering graduate students, Wen-Di Li and Fei Ding, and post-doctoral fellow, Jonathan Hu, published a paper on their innovation in February in the journal Optics Express. The research was funded by the Defense Advance Research Projects Agency.

In Raman scattering, a beam of pure one-color light is focused on a target, but the reflected light from the object contains two extra colors of light. The frequency of these extra colors are unique to the molecular make-up of the substance, providing a potentially powerfu
'/>"/>

Contact: Chris Emery
cemery@princeton.edu
609-258-4597
Princeton University, Engineering School
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Princeton scientists find an equation for materials innovation
2. Princeton scientists find unusual electrons that go with the flow
3. Online Systems Engineering Master's Program Attracts Engineers from Fortune 500 Firms
4. NC State engineers discover nanoparticles can break on through
5. Engineers aim to solve burning computer problem
6. Virginia Tech engineers identify conditions that initiate erosion
7. Techstreet Launches BuildingBlocks Utility for Industry Standards Saving Time and Increasing Productivity for Engineers
8. Virginia Tech engineers investigate energy independent monitoring system for bridges
9. New Educational Website Celebrates the Accomplishments of Engineers
10. Engineers tune a nanoscale grating structure to trap and release a variety of light waves
11. UB engineers prove that carbon nanotubes are superior to metals for electronics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Princeton engineers make breakthrough in ultra-sensitive sensor technology 
(Date:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
(Date:12/22/2014)... 22, 2014 Fertility Associates of Memphis ... Bank USA , a network of more than 20 ... partnership, patients have fast access to a national pool ... IVF . Fertility Associates of Memphis is the only ... treatment option. , Dr. William Kutteh , director ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one ... of Nick Maroulis, Pharm.D. to the newly created position ... In this position, Dr. Maroulis will continue to manage ... of our multi-site pharmacies as the company expands. Dr. ... that time he has served in many different capacities ...
(Date:12/19/2014)... Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... that they have been acquired by Roche (SIX: RO, ... privately held company that provides a big data platform ... (NGS) data for the academic and translational research markets. ... and will continue to focus on development of their ...
Breaking Biology Technology:WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... (WNS) is a poorly understood condition that, in the two ... northeastern states and killed as many as half a million ... measure that may help save the affected bats: providing localized ... no idea why it,s spreading so rapidly," says Justin Boyles, ...
... 5 Cardium Therapeutics (NYSE Alternext US: CXM) today announced ... form of debt with accompanying warrants to purchase shares of ... and sole placement agent for the transaction. The material ... in the Company,s Current Report on Form 8-K to be ...
... March 6 S*BIO Pte Ltd today announced ... Emerging BioScience Company of Singapore Award. Dr. Stephen ... the award on behalf of the company, from ... and Industry.The Annual BioSpectrum awards recognize outstanding contributions ...
Cached Biology Technology:Ecologists propose first prevention for white-nose syndrome death in bats 2Ecologists propose first prevention for white-nose syndrome death in bats 3Cardium Completes $3.5 Million Credit Facility 2Cardium Completes $3.5 Million Credit Facility 3Cardium Completes $3.5 Million Credit Facility 4S*BIO Receives BioSpectrum Editor's Choice, Emerging BioScience Company of Singapore Award 2S*BIO Receives BioSpectrum Editor's Choice, Emerging BioScience Company of Singapore Award 3
(Date:12/22/2014)...  NXT-ID, Inc. (NASDAQ: NXTD and ... focused on the growing mobile commerce market, announces it ... Apollo Robbins for the 2015 International CES debut ... Apollo Robbins will be at the NXT-ID ... some of his famous theft techniques to visiting media ...
(Date:12/19/2014)... Dec. 18, 2014  23andMe, Inc., the leading personal ... that pinpoints fine-scale differences in genetic ancestry of individuals ... Since immigrants first arrived more than four ... has served as a meeting place for peoples ... and the ongoing mixing of peoples with African, European, ...
(Date:12/17/2014)... RALEIGH, N.C. , Dec. 16, 2014 ... has licensed its PerformTek biometric technology to industry leaders ... their highly accurate, clinically validated, biometric wearable products. These ... January 6-9 in Las Vegas . ... the technology is accurate, flexible and robust – with ...
Breaking Biology News(10 mins):NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 423andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2
... post-weaning multi-systemic wasting syndrome (PMWS) on British Pig Industry published, ... PMWS, Farm-level intervention could save farmers up to 11,500 per ... pig virus, present on 99 per cent of pig farms has ... a whole, costing British farmers as much as 84 per pig ...
... could be improved by a discovery about how chickens regulate ... make-up can affect the signals sent from its stomach to ... enough to eat. Poultry farmers often have to restrict ... of fullness and can overeat, affecting their ability to reproduce. ...
... online publication version of Nature today presents two manuscripts ... and domestication of wheat. These achievements are the results ... and Developmental Biology (IGDB), Chinese Academy of Sciences, Chinese ... projects sequenced and analyzed two ancestral wheat genomes of ...
Cached Biology News:Pig wasting syndrome costing farmers millions 2Appetite genes are key to better diets for poultry, study shows 2The latest genomic studies of wheat sheds new light on crop adaptation and domestication 2The latest genomic studies of wheat sheds new light on crop adaptation and domestication 3