Optics: measuring and testing – By light interference
Reexamination Certificate
2008-04-29
2008-04-29
Connolly, Patrick (Department: 2877)
Optics: measuring and testing
By light interference
Reexamination Certificate
active
07365855
ABSTRACT:
Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.
REFERENCES:
patent: 5255075 (1993-10-01), Cush
patent: 6628376 (2003-09-01), Nikitin et al.
patent: 2007/0008546 (2007-01-01), Ho et al.
patent: 2007/0139646 (2007-06-01), Singh
patent: 2007/0139648 (2007-06-01), Singh
patent: 2007/0146718 (2007-06-01), Takase et al.
Bo Liedberg, et al., Surface Plasmon Resonance for Gas Detection and Biosensing, Sensors and Actuators, vol. 4, 1983, pp. 299-304.
S. G. Nelson, et al., High Sensitivity Surface Plasmon Resonanace Sensor Based on Phase Detection, Sensors and Actuators B: Cemical, vol. 35, Issues 1-3, Sep. 1996, pp. 187-191.
Chien-Ming Wu, et al., High-sensitivity Sensor Based on Surface Plasmon Resonance and Heterodyne Interferometry, Sensors and Actuators B: Chemical, vol. 92, Issues 1-2, Jul. 1, 2003, pp. 133-136.
Anna K. Sheridan, et al., Phase Interrogation of an Integrated Optical SPR Sensor, Sensors and Actuators B: Chemical, vol. 97, Issue 1, Jan. 1, 2004, pp. 114-121.
H. P. Ho, et al., Real-time Optical Biosensor Based on Differential Phase Measurement of Surface Plasmon Resonance, Biosensors and Bioelectronics, vol. 20, Issue 10, Apr. 15, 2005, pp. 2177-2180.
S. Y. Wu, et al., Highly Sensitive Differential Phase-sensitive Surface Plasmon Resonance Biosensor Based on the Mach-Zehnder Configuration, Optics Letters, vol. 29, No. 20, Oct. 15, 2004.
Ho Ho Pui
Kong Siu Kai
Law Wing Cheung
Lin Chinlon
Wong Chi Lok
Connolly Patrick
Darby & Darby PC
Marquis Thomas R.
The Chinese University of Hong Kong
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