Clark School Home UMD
ECE

ECE News Story

Davis and Fellow Researchers Awarded Patent for Sensor System

Davis and Fellow Researchers Awarded Patent for Sensor System

Professor Christopher Davis, Research Scientist Igor Smolyaninov, and alumnus Yu-Ju Hung have been awarded U.S. Patent #7,943,908, titled "Sensor system with surface-plasmon-polariton enhanced selective fluorescence excitation and method."

Fluorescent molecules are widely used in numerous research and sensing applications. The scientific community in the field of the fluorescence detection is particularly interested in an understanding of how fluorescent molecules behave in various experimental geometries, especially in close proximity to metal and dielectric interfaces.

The Clark School researchers sought to provide a sensor system with surface-plasmon-polariton (SPP) enhanced selected fluorescence excitation in which the behavior of the surface plasmon polaritons is controlled in an elegant and efficient fashion to obtain a strong fluorescent response. The sensor system was also designed to ensure that it is fully applicable in genomic, proteomic, chemical and biological applications which permits a sufficiently precise determination of presence of fluorescent genes, cells, DNA oligonucleotides, c-DNA, RNA, antibodies, antigens, and proteins.

In a sensor system, an active sensor chip includes an array of periodically-patterned dielectric active sensor patches of different periodicities and geometries formed on a metal film. A specimen under study is positioned on each patch, and the active sensor chip is interrogated by illumination the patches in a predetermined sequence to result in a fluorescence response from each patch enhanced by SPP. The intensity of the fluorescence response is controlled by varying the wavelength, incidence angle, azimuthal orientation and polarization direction of the excitation light beam as the function of the periodicity of the illuminated patch. The system is compatible with commercial fluorescence microscopes and scanned laser interrogation systems.

For more information about this invention, visit http://patents.com/us-7943908.html.

June 4, 2011


Prev   Next

Current Headlines

Alumna Mingyan Liu named ECE chair at University of Michigan

Alumnus Adly Appointed to Deputy Minister of Higher Education for University Affairs 

Baras and Mayergoyz named Distinguished University Professors

Prof. Joseph JaJa Named Interim Chair of ECE Department

Prof. Sang Bok Lee appointed director of Maryland NanoCenter

ECE Inducts Three New Distinguished Alumni

RC65 Honors Chellappa’s 65th Birthday and his Academic Contributions to Computer Vision Research

Ephremides leads new NSF Age of Information project

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar

Additional Resources

UM Newsdesk

Faculty Experts