Tunable bragg stack
AssigneeOpalux Incorporation
InventorsAndre Arsenault, Geoffrey Alan Ozin, Daniel Patrick Puzzo
Life of this patent
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Abstract
A tunable photonic crystal device comprising: alternating layers of a first material and a second material, the alternating layers comprising a responsive material, the responsive material being responsive to an external stimulus, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength; wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength.
Claims31
A tunable photonic crystal comprising:
- a first layer comprising a first refractive index;
- and
- a second layer comprising a second refractive index, wherein the second layer is in contact with the first layer,
- wherein the first and second refractive indices are different, and
- wherein the first or second layer comprises a responsive material that is responsive to an external stimulus, wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the tunable photonic crystal shifting from a first reflected wavelength to a second reflected wavelength,
- wherein the first layer comprises a polymer.
The tunable photonic crystal of 9, wherein the electrochemical cell further comprises a spacer between the first and second electrodes.
A tunable photonic crystal, comprising:
- a first layer comprising a first refractive index;
- and
- a second layer comprising a second refractive index, wherein the second layer is in contact with the first layer,
- wherein the first and second refractive indices are different, and
- wherein the first or second layer comprises a responsive material that is responsive to an external stimulus, wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the tunable photonic crystal shifting from a first reflected wavelength to a second reflected wavelength,
- wherein the first layer comprises a layer of nano- or microparticles.
A tunable photonic crystal, comprising:
- a first layer comprising a first refractive index;
- and
- a second layer comprising a second refractive index, wherein the second layer is in contact with the first layer,
- wherein the first and second refractive indices are different, and
- wherein the first or second layer comprises a responsive material that is responsive to an external stimulus, wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the tunable photonic crystal shifting from a first reflected wavelength to a second reflected wavelength,
- wherein the external stimulus is a mechanical stimulus and the responsive material is expandable or compressible, a thermal stimulus, or a magnetic stimulus and the responsive material is magnetically responsive material.
Dependencies are inferred from the claim text.