Navigation Links
Virus detector harnesses ring of light in 'whispering gallery mode'
Date:8/23/2012

By affixing nanoscale gold spheres onto a microscopic bead of glass, researchers have created a super-sensor that can detect even single samples of the smallest known viruses. The sensor uses a peculiar behavior of light known as "whispering gallery mode," named after the famous circular gallery in St. Paul's Cathedral in London, where a whisper near the wall can be heard around the gallery.

In a similar way, waves of light are sent whirling around the inside of a small glass bead, resonating at a specific frequency. Just as a small object on a vibrating violin string can change its frequency ever so slightly so too can a virus landing on the sensor change the resonant frequency of the light.

With the initial glass sphere, researchers were able to detect changes in frequency from viruses about the size of influenza, a relatively large virus. The system, however, was not sensitive enough to detect anything smaller, such as the Polio virus.

The researchers were able to increase the sensitivity of the device nearly seventyfold by adding gold nanospheres to the surface of the glass, which created what the researchers referred to as "plasmonic hot spots" areas where the light waves coupled with waves of electrons. This hybrid sensor not only detected the presence of the MS2 virus the current light-weight in the world of RNA viruses it also was able to determine the weight of the virus by measuring the precise frequency change of the light. With a few minor adjustments, the sensor should also be able to detect single proteins, such as cancer markers that appear in the blood long before outward signs of cancer can be detected.

The results were published in the American Institute of Physics (AIP) journal Applied Physics Letters.


'/>"/>

Contact: Charles Blue
cblue@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

Page: 1

Related medicine news :

1. Investigators trace of role reusable grocery bag in norovirus outbreak
2. 16th-century Korean mummy provides clue to hepatitis B virus genetic code
3. New study shows why swine flu virus develops drug resistance
4. Vygone Introduces A New Zapper For Effective Relief From Herpes Virus Related Skin Problems
5. Vygone Presents A New Product To Deal With Genital Warts And Other Herpes Virus Related Skin Problems
6. Moffitt researchers find cutaneous human papillomavirus infection a risk factor for skin cancer
7. Hepatitis C Virus Levels Higher in Certain Injection Drug Users
8. Antibodies for new rotavirus vaccines
9. SEARCH study shows 1-year drop in HIV virus levels in rural Ugandan parish after campaign
10. Human papillomavirus types do not replace others after large-scale vaccination
11. Only 1 in 4 Americans With HIV Has Virus Under Control: CDC
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/30/2016)... ... November 30, 2016 , ... "I hate when the mixture ... brushing my teeth," said an inventor from Bridgewater, N.J. "I thought that there had ... handy device." , He developed the patent-pending DEFLECTOR to prevent saliva and toothpaste from ...
(Date:11/30/2016)... FL (PRWEB) , ... November 30, 2016 , ... ... disorder and mental health treatment has announced the opening of a new eating ... partial hospitalization and intensive outpatient treatment for adults and adolescents, both males and ...
(Date:11/30/2016)... , ... November 30, 2016 , ... ... injured workers have been a focus of public policymakers and system stakeholders in ... Institute (WCRI) released its Medical Price Index for Workers’ Compensation, Eighth Edition ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... clinical research community that the FDA Binding Guidance goes into effect next month. ... formats listed in the FDA Data Standards Catalog. The current FDA Data Standards ...
(Date:11/30/2016)... ... 2016 , ... U.S. Security Associates (USA) announced the acquisition ... Richmond, Virginia. The acquisition further strengthens USA’s capabilities within the expanding healthcare ... prides itself on 100% client-retention to the healthcare industry. In addition, ODS has ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... YORK , December 2, 2016 ... the trading session in red, while the Dow Jones Industrial ... at the close of US markets, which prompted Stock-callers this ... stocks: NuVasive Inc. (NASDAQ: NUVA ), Smith & ... (NASDAQ: NXTM ), and Cesca Therapeutics Inc. (NASDAQ: ...
(Date:12/2/2016)... LONDON , Dec. 1, 2016 Around ... every country, region and each habitable land present over ... haunt every individual once in a life time this ... proper care available until now. Given the steady increase ... mortality, together with the spiraling healthcare costs of treatment, ...
(Date:11/30/2016)... Research and Markets has announced the addition ... - MedCore" report to their offering. ... , , The cerebrospinal fluid ... healthy individuals, it is circulated though the brain and its ventricles, the ... of CSF surrounding the brain changes significantly. As ...
Breaking Medicine Technology: