ENHANCED SENSITIVITY OF A WHISPERING GALLERY MODE MICROSPHERE SENSOR BY A HIGH-REFRACTIVE INDEX SURFACE LAYER
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 24, 2007
app pub date -
Nov 17, 2006
filing date -
Nov 18, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The use of whispering gallery mode (WGM) evanescent waves to detect adsorption of molecules to the surface of microsphere sensors and more particularly to the utilization of a high refractive index surface layer to increase the sensitivity thereof. The present invention examines the sensor capability of WGM in a dielectric sphere coated with a thin uniform dielectric layer of a high refractive index. Among the utilities of such a modified resonator for the sensing are to have an evanescent field of a different penetration depth without using a non-silica based microsphere or changing the laser wavelength, to further enhance the sensitivity by drawing the optical field of WGM into the coating layer, and to realize the same relative shifts for WGM of different radial modes, thus eliminating ambiguities in the measurement of a refractive index change in the surrounding medium.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully