Patent ID: 9096764
Filing Date: 2015-08-04
Classification: C09D

Abstract:
1. A tunable photonic crystal composition comprising: particles of a tunable photonic crystal, each particle having a polymer network with a periodic modulation of refractive indices, the polymer network having a reflectance wavelength, wherein the periodic modulation of refractive indices is responsive to an external stimulus and the reflectance wavelength is shifted in response to the external stimulus, the particles of the tunable photonic crystal having an average particle size between about 1 μm and 200 μm; and at least one carrier in which the particles are dispersed, which is selected from the group consisting of: a binder, a solvent, an additive, a filler, and a curing agent, wherein in response to application of the external stimulus, a reflected wavelength of at least a portion of the composition shifts from a first reflected wavelength to a second reflected wavelength due to shifting of the reflectance wavelength of the polymer networks of said particles of the tunable photonic crystal.