Support with a surface structure for sensitive evanescent-field detection
First Claim
1. A support comprising essentially parallel first and second surfaces, wherein at least one area on said first surface comprises surface structures that form evanescent-fields on the first surface of the support for the detection of optically-active substances within the evanescent-fields formed on the first surface of the support, wherein the surface structures on said surface comprise inclined surfaces that are inclined with respect to a plane of the support by an angle within a range from 10°
- to 85°
.
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Accused Products
Abstract
A support structure, such as an optical disc, is designed having surface structures formed on one or more surfaces of the support to enable formation of evanescent fields in a medium adjacent to the surface structures and allow for detection of optically-active substances within the evanescent fields in the medium. The surface structures may be formed in one or more areas on the surface of the support. The surface structures may have inclined surfaces that are inclined with respect to a general plane of the support surface, and form wedge structures or symmetric pyramidal structures, for example.
20 Citations
26 Claims
- 1. A support comprising essentially parallel first and second surfaces, wherein at least one area on said first surface comprises surface structures that form evanescent-fields on the first surface of the support for the detection of optically-active substances within the evanescent-fields formed on the first surface of the support, wherein the surface structures on said surface comprise inclined surfaces that are inclined with respect to a plane of the support by an angle within a range from 10°
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12. A device for the detection of optically-active substances comprising:
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a support having opposing first and second surfaces, wherein the first surface comprises inclined surface structures that form evanescent-fields on the first surface of the support by TIR (total internal reflection) of light; at least one light source disposed on a side of the support facing the second surface, to emit the light that is directed at the inclined surface structures on the first surface through the support; and at least one detector configured to detect an optically-active substance within an evanescent-field formed by the inclined surface structures on the first surface of the support. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method, comprising acts of:
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providing a support comprising essentially parallel first and second surfaces wherein at least one area on the first surface comprises surface structures that form evanescent fields on the first surface of the support, wherein the surface structures comprise inclined surfaces that are inclined with respect to a plane of the support by an angle from 10°
to 85°
; anddetecting an optically-active substance within a medium disposed adjacent the first surface of the support using evanescent-fields generated by the surface structures on the first surface of the support. - View Dependent Claims (23, 24, 25, 26)
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Specification