Patent ID: 8643938
Filing Date: 2014-02-04
Classification: C08K,C09D,G02F

Abstract:
1. A microcapsule which comprises a core that is encapsulated by an envelope, wherein at least one particle with a motion component and an indication component is provided in a substance forming the core which is capable of being transferred by the action of a substance-activating energy, at least for a short time, from a solid state or higher-viscosity state to a low-viscosity state, and wherein the at least one particle is capable of undergoing a change as to its position and/or orientation due to the action of a particle-activating energy occurring during the low-viscosity state of the substance of the core, and wherein the substance of the core reverts back, upon completion of the input of energy, to the solid state or higher-viscosity state, thereby immobilising the at least one particle in its new position and/or orientation, wherein only particles of the same kind are provided within the core and in that the microcapsule has particles incorporated therein which are arranged to form a colloidal, photonic crystal when exposed to an external energy while the substance forming the core is in the low-viscosity state, and in that the substance forming said core consists of a photorheological liquid.