HOME >> BIOLOGY >> NEWS
Tiny paddle oscillator senses the mass of a virus

ITHACA, N.Y. -- By using a device only six-millionths of a meter long, researchers at Cornell University have been able to detect the presence of as few as a half-dozen viruses -- and they believe the device is sensitive enough to notice just one.

The research could lead to simple detectors capable of differentiating between a wide variety of pathogens,i ncluding viruses, bacteria and toxic organic chemicals.

The experiment, an extension of earlier work in which similar devices were used to detect the mass of a single bacterium, is reported in a paper, "Virus detection using nanoelectromechanical devices," in the September 27, 2004, issue ofApplied Physics Letters by Cornell research associate Rob Ilic of the Cornell NanoScale Facility (CNF), Yanou Yang, a Cornell graduate student in biomedical engineering, and Harold Craighead, Cornell professor of applied and engineering physics. The work was done with the assistance of Michael Shuler, Cornell professor of chemical and biological engineering, and microbiologist Gary Blissard of the Boyce Thompson Institute for Plant Research on the Cornell campus.

At CNF, the researchers created arrays of tiny silicon paddles from 6 to 10 micrometers (millionths of a meter) long, half a micrometer wide, and about 150 nanometers (billionths of a meter) thick, with a one-micrometer square pad at the end. Think of a tiny fly-swatter mounted by its handle like a diving board. A large array of paddles were mounted on a piezoelectric crystal that can be made to vibrate at frequencies on the order of 5 to 10 megaHertz (mHz). The experimenters then varied the frequency of vibration of the crystal. When it matched the paddles' resonant frequency, the paddles began to vibrate, as measured by focusing a laser on the paddles and noting the change in reflected light, a process called optical interferometry.

The natural resonant frequency at which something vibrates depends on, among other things, its mass. A
'"/>

Contact: Bill Steele
ws21@cornell.edu
607-255-7164
Cornell University News Service
4-Nov-2004


Page: 1 2 3

Related biology news :

1. Monkeys understand numbers across senses
2. Features of replication suggest viruses have common themes, vulnerabilities
3. Marijuana component opens the door for virus that causes Kaposis sarcoma
4. Discovery in plant virus may help prevent HIV and similar viruses
5. Detecting transmissibility of avian influenza virus in human households
6. CTRC enrolls first patients in novel phase II study for sarcoma -- living virus destroys cancer cell
7. Expert to provide update after worst tomato virus hits California
8. University of Colorado licenses two influenza virus detection discoveries to Quidel Corp.
9. Modified herpes virus keeps arteries free-flowing following procedures
10. MIT, BU team builds viruses to combat harmful biofilms
11. First all-African produced genetically engineered maize is resistant to maize streak virus

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Tiny paddle oscillator senses the mass virus

(Date:5/18/2015)... Sweden , May 18, 2015 ... fingerprint sensors FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from one ... from June until and including Q3 2015 and the sensors ... . Communicated order values for 2015 hereby amount to ... for Q1 2015 of 140 MSEK and a number of ...
(Date:5/11/2015)... , May 11, 2015  Through a well-rounded UAS ... had a strong showing at AUVSI,s Unmanned 2015 ... representatives of Ohio,s UAS industry met ... abroad from all points along the UAS ecosystem. ... Coalition,s (DDC) Vice President for Aerospace Rich Knoll . ...
(Date:5/7/2015)... Fingerprint Cards (FPC) introduces ... FPC,s smallest touch fingerprint sensors to date.  ... integration on the backside of the phone, and ... to integrate touch fingerprint sensors in the OEMs, ... for module manufacturers to customize the look and ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2
(Date:5/26/2015)... (PRWEB) May 26, 2015 The ... with the Max Planck Society establishing the ... Photonics. The center will link two of the world's ... will be only the third Max Planck Centre in ... international society for optics and photonics, was with ...
(Date:5/26/2015)... HILDEN, Germany , May 26, ... QGEN ; Frankfurt Prime Standard: QIA) today ... Insight ® (QCI™) bioinformatics content and software ... report on genomic variants identified in next-generation sequencing ... bioinformatics platform are in oncology, for somatic and ...
(Date:5/26/2015)... (PRWEB) May 26, 2015 Global ... have announced plans for the company’s first cellular and ... followed by a full day, hands-on stem cell training ... J. Victor Garcia Gimenez, M.D., President of Therapeutic Confrontations ... medical community’s increasing interest in regenerative medicine and recent ...
(Date:5/26/2015)... San Diego, CA (PRWEB) May 26, 2015 ... Biopharma, announced the beginning of a long-term relationship ... works on behalf of its members to provide ... “I am extremely pleased to count VGP as ... to more arthritic dog patients nationwide. Concentrating and ...
Breaking Biology Technology:Third Max Planck Centre in North America Inaugurated at University of Ottawa 2Third Max Planck Centre in North America Inaugurated at University of Ottawa 3QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 2QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 3QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 4QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 5Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 2Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 3VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 2VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 3
Cached News: