Resumes
Resumes
Sorasak Danworaphong Phones & Addresses
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91 Angell St, Providence, RI 02906
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91 S Angell St APT 1, Providence, RI 02906
Work
Position:
Professional/Technical
Education
Degree:
Graduate or professional degree
Emails
Publications
Us Patents
Reflective Strain Gauge And Polarization-Sensitive Devices
View pageUS Patent:
20050087021, Apr 28, 2005
Filed:
Jan 23, 2004
Appl. No.:
10/764263
Inventors:
Gregory Crawford - Providence RI, US
Darran Cairns - Providence RI, US
Christopher Bowley - Woodbury MN, US
Sorasak Danworaphong - Providence RI, US
Adam Fontecchio - Medfield MA, US
Sadeg Faris - Pleasantville NY, US
Le Li - Yorktown Heights NY, US
Darran Cairns - Providence RI, US
Christopher Bowley - Woodbury MN, US
Sorasak Danworaphong - Providence RI, US
Adam Fontecchio - Medfield MA, US
Sadeg Faris - Pleasantville NY, US
Le Li - Yorktown Heights NY, US
International Classification:
G01L001/24
US Classification:
073800000
Abstract:
A reflective strain gauge includes an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection or transmission grating capable of reflecting or transmitting light of a selected wavelength, and means for adhering the film to a surface of a workpiece for monitoring the strain at said surface. A change in the nature of the reflected light is an indication of strain. Also included is a polarizing material having an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection grating capable of reflecting light of a selected wavelength, wherein the reflection grating of the H-PDLC film is oriented, such that the refractive index parallel to said axis of orientation (n) is greater than the refractive index perpendicular to said axis (n).
Reflective Liquid Crystal Strain Gauge With Aspected Particles And Polarization-Sensitive Devices
View pageUS Patent:
6778236, Aug 17, 2004
Filed:
Jun 1, 2000
Appl. No.:
09/584875
Inventors:
Gregory P. Crawford - Providence RI
Darran R. Cairns - Providence RI
Christopher C. Bowley - Woodbury MN
Sorasak Danworaphong - Providence RI
Adam K. Fontecchio - Medfield MA
Sadeg M. Faris - Pleasantville NY
Le Li - Yorktown Heights NY
Darran R. Cairns - Providence RI
Christopher C. Bowley - Woodbury MN
Sorasak Danworaphong - Providence RI
Adam K. Fontecchio - Medfield MA
Sadeg M. Faris - Pleasantville NY
Le Li - Yorktown Heights NY
Assignee:
Reveo, Inc. - Elmsford NY
Brown University Research Foundation - Providence RI
Brown University Research Foundation - Providence RI
International Classification:
G02F 11333
US Classification:
349 86, 33501
Abstract:
A reflective strain gauge includes an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection or transmission grating capable of reflecting or transmitting light of a selected wavelength, and means for adhering the film to a surface of a workpiece for monitoring the strain at said surface. A change in the nature of the reflected light is an indication of strain. Also included is a polarizing material having an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection grating capable of reflecting light of a selected wavelength, wherein the reflection grating of the H-PDLC film is oriented, such that the refractive index parallel to said axis of orientation (n ) is greater than the refractive index perpendicular to said axis (n ).