Guided mode resonant filter biosensor using a linear grating surface structure
DCFirst Claim
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1. A biosensor comprising:
- (a) a one-dimensional grating surface structure comprised of a material having a low refractive index;
(b) a high refractive index material layer that is applied on top of the low refractive index one-dimensional grating layer; and
(c) one or more specific binding substances immobilized on a surface of the high refractive index layer opposite of the one-dimensional grating surface structure comprised of a material having a low refractive index;
wherein the one or more specific binding substances are bound to their binding partners and wherein one or more specific binding substances and their binding partners are detection label-free,wherein, when the biosensor is illuminated a resonant grating effect is produced on a reflected radiation spectrum, and wherein cross-section of the one-dimensional grating is less than the wavelength of the resonant grating effect.
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Abstract
Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also provides optical devices useful as narrow band filters.
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Citations
15 Claims
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1. A biosensor comprising:
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(a) a one-dimensional grating surface structure comprised of a material having a low refractive index; (b) a high refractive index material layer that is applied on top of the low refractive index one-dimensional grating layer; and (c) one or more specific binding substances immobilized on a surface of the high refractive index layer opposite of the one-dimensional grating surface structure comprised of a material having a low refractive index;
wherein the one or more specific binding substances are bound to their binding partners and wherein one or more specific binding substances and their binding partners are detection label-free,wherein, when the biosensor is illuminated a resonant grating effect is produced on a reflected radiation spectrum, and wherein cross-section of the one-dimensional grating is less than the wavelength of the resonant grating effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A liquid-containing vessel comprising a biosensor as an internal surface, wherein the biosensor comprises:
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(a) a one-dimensional grating surface structure comprised of a material having a low refractive index; (b) a high refractive index material layer that is applied on top of the low refractive index one-dimensional grating layer; and (c) one or more specific binding substances immobilized on a surface of the high refractive index layer opposite of the one-dimensional grating surface structure comprised of a material having a low refractive index;
wherein the one or more specific binding substances are bound to their binding partners and wherein one or more specific binding substances and their binding partners are detection label-free,wherein, when the biosensor is illuminated a resonant grating effect is produced on a reflected radiation spectrum, and wherein cross-section of the one-dimensional grating is less than the wavelength of the resonant grating effect. - View Dependent Claims (15)
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Specification