Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2007-01-16
2007-01-16
Lavarias, Arnel C. (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C435S288700, C250S559400, C250S566000
Reexamination Certificate
active
10763995
ABSTRACT:
A method and apparatus f or performing an assay process, featuring providing microbeads in a solution; placing the microbeads on an alignment substrate; reading codes of the microbeads and the position thereof on the alignment substrate; reading the fluorescence on each microbead and the position order thereof on the alignment substrate; and determining an assay result based on bead position order and bead code of the earlier reading steps, where the microbead is an encoded particle having a particle substrate; a portion of the substrate being made of a substantially single material and having at least one diffraction grating embedded therein, the grating having a resultant refractive index variation within the single material at a grating location; and the grating providing an optical output signal indicative of a code when illuminated by an incident light signal propagating from outside said substrate, the optical output signal being a result of passive, non-resonant scattering from said grating when illuminated by said incident light signal.
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Kersey Alan D.
Li Tuo
Moon John
Putnam Martin A.
CyVera Corporation
Lavarias Arnel C.
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