Photonic crystal biosensor structure and fabrication method
First Claim
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1. A sensor comprising a nanoporous material, having a low refractive index, supported on a bottom surface by a substrate, and coated on a top surface with a high dielectric constant dielectric coating;
- wherein, the high dielectric constant dielectric coating or the high dielectric constant dielectric coating in combination with the nanoporous material form a sub-wavelength period grating structure;
wherein, when the sensor is illuminated a resonant grating effect is produced on a reflected radiation spectrum; and
wherein the depth and period of the sub-wavelength period grating structure are less than the wavelength of the resonant grating effect.
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Abstract
The invention provides sensor compositions and method of making sensors.
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Citations
31 Claims
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1. A sensor comprising a nanoporous material, having a low refractive index, supported on a bottom surface by a substrate, and coated on a top surface with a high dielectric constant dielectric coating;
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wherein, the high dielectric constant dielectric coating or the high dielectric constant dielectric coating in combination with the nanoporous material form a sub-wavelength period grating structure; wherein, when the sensor is illuminated a resonant grating effect is produced on a reflected radiation spectrum; and wherein the depth and period of the sub-wavelength period grating structure are less than the wavelength of the resonant grating effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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- 20. A sensor comprising a waveguiding structure formed by a waveguiding film covering a substrate, wherein the waveguiding film has a refractive index higher than the refractive index of the substrate, and a diffraction grating is contained with in the waveguiding structure, wherein the diffraction grating is comprised of a nanoporous material having a low dielectric constant.
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