Abstract: A composition for multi-color display material, including a periodic structure having a void structure inside that communicates with the outside, and a mobile particle that is selectively disposed inside or outside of the void structure of the periodic structure.

Abstract: A particle for a display includes a colored particle containing a colorant and a polymer having a chargeable group; and a polymer gel layer that covers a surface of the colored particle and contains a polymer gel.

Abstract: A display medium includes: a pair of substrates having electrodes and disposed to form a space therebetween, at least one of the substrates transmitting light; a dispersion medium enclosed between the substrates; a group of particles that is dispersed in the dispersion medium and that moves in the dispersion medium according to an electric field applied between the substrates; and a treatment layer provided on at least one of surfaces of the substrates that oppose each other, the treatment layer being formed by treating the at least one of surfaces of the substrates that oppose each other with a polymer compound having a silicone chain.

Abstract: The present invention provides a polymer compound having a repeating structure represented by the following Formula (1) or Formula (3). In Formula (1) or Formula (3), R1, R2 and R3 each independently represent a hydrogen atom or an alkyl group; and R4 represents a straight-chained or branched alkyl group having 10 or more carbon atoms. X1 and X2 each represent a divalent linking group. x, y and z each represent mole %, and satisfy the conditions of 0<x?90, 0<y?90, 0<z?2.5, and 70?x+y+z?100. B represents a quaternary ammonium ion, in which at least one alkyl group having 10 or more carbon atoms is bonded to the nitrogen atom of the quaternary ammonium ion, or a cation with delocalized charge; and A represents a counter anion therefor. D represents a phosphoric acid ion which may be alkyl-substituted, a phosphonic acid ion, a carboxylic acid ion, a sulfuric acid ion, a sulfite ion, or the following Anion (II), (III) or (IV); and E represents a counter cation therefor.

Abstract: The polymer gel-containing composition of the present invention contains a solvent having a dielectric constant ? of 5 or less at 20° C., and an ionic polymer gel whose volume is changeable due to being driven with voltage. The ionic polymer gel preferably has a hydrophobic group and an ionic group, and the ionic group preferably has delocalized charge. Further, the ionic polymer gel preferably has a hydrophilic group.

Abstract: A microreactor device includes: a microchannel; magnetic particles that are introduced into the microchannel; and a magnet that is arranged on an outside of the microchannel and exerts a magnetic force on the magnetic particles.

Abstract: A display particle includes: a colored particle including a polymer having a charging group and a colorant; and a reactive silicone polymer or a reactive long-chain alkyl polymer, the polymer being bound to or covering the surface of the colored particle.

Abstract: An optical element includes a pair of a transparent substrate and a back substrate which face each other with a predetermined gap by a spacer, and, a pair of the first electrode and the second electrode, and a periodic structural body as an optical composition for a multi-color display and an electrolytic solution are disposed within the gap of the transparent substrate and the back substrate. Metal ions contained in the electrolytic solution are deposited as metal atoms onto the periodic structural body of the optical composition for a multi-color display, to change a structural color of the periodic structural body. Display that can display a color and has a memory property can be obtained.

Abstract: An image display medium including a pair of substrates, a dispersion medium, and particles of two or more kinds, the particles of each kind being able to move in the dispersion medium in response to an electric field formed between the substrates, each kind of particles having a different color and a different absolute value of a voltage for moving, the voltage for moving being determined from a difference between an electrostatic force that acts on the particles in response to the electric field formed between the substrates and a binding force that acts in a direction of retaining the particles in a state that the particles are in before the electrostatic force acts on the particles, and at least one of an intensity of the binding force and an intensity of the electrostatic force for the particles of each kind being different.

Abstract: An optical material comprising an ionic liquid and a polymer gel including a light controlling material, wherein the polymer gel absorbs and/or releases the ionic liquid in accordance with a temperature change. Also provided is an optical element comprising two substrates and the optical material between the two substrates.

Abstract: The present invention relates to a light-controlling element comprising a polymer gel composition layer containing: a holding member; liquid held by the holding member; and a stimulus-responsive polymer gel which is held by the holding member and which changes in volume by absorbing or discharging the liquid due to an external stimulus, wherein the stimulus-responsive polymer gel is arranged in a single layer in the holding member, and also relates to a method for manufacturing the element. The polymer gel composition layer can be provided with a substrate on one side or both sides thereof, and further can be provided with a stimulus providing member.

Abstract: A microreactor device includes: a microchannel; magnetic particles that are introduced into the microchannel; and a magnet that is arranged on an outside of the microchannel and exerts a magnetic force on the magnetic particles.

Abstract: The present invention provides a polymer gel composition including: at least two polymer compounds which interact with each other to form a polymer complex; and a liquid. One of the polymer compounds forms a three-dimensional crosslinked structure, at least one other polymer compound is compatible with the liquid, and at least a portion of the compatible polymer compound is included in the three-dimensional crosslinked structure. Preferably, when the polymer complex is disassembled or decomposed by stimuli, the polymer compound forming the three-dimensional crosslinked structure changes its volume by absorbing or releasing the liquid. The three-dimensional crosslinked structure is preferably in a particle shape. An optical device using such a polymer gel composition is also provided.

Abstract: A microchannel device includes: a microchannel that comprises a stimuli-sensitive gel and is adjusted by giving a stimulation species to the stimuli-sensitive gel.

Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.

Abstract: A composition for multi-color display material, including: a periodic structure having a void structure inside that communicates with the outside; and a mobile particle that is selectively disposed inside or outside of the void structure of the periodic structure.

Abstract: An optical element includes a pair of a transparent substrate and a back substrate which face each other with a predetermined gap by a spacer, and, a pair of the first electrode and the second electrode, and a periodic structural body as an optical composition for a multi-color display and an electrolytic solution are disposed within the gap of the transparent substrate and the back substrate. Metal ions contained in the electrolytic solution are deposited as metal atoms onto the periodic structural body of the optical composition for a multi-color display, to change a structural color of the periodic structural body. Display that can display a color and has a memory property can be obtained.

Abstract: An optical material comprising an ionic liquid and a polymer gel including a light controlling material, wherein the polymer gel absorbs and/or releases the ionic liquid in accordance with a temperature change. Also provided is an optical element comprising two substrates and the optical material between the two substrates.

Abstract: The present invention relates to a light-controlling element comprising a polymer gel composition layer containing: a holding member; liquid held by the holding member; and a stimulus-responsive polymer gel which is held by the holding member and which changes in volume by absorbing or discharging the liquid due to an external stimulus, wherein the stimulus-responsive polymer gel is arranged in a single layer in the holding member, and also relates to a method for manufacturing the element. The polymer gel composition layer can be provided with a substrate on one side or both sides thereof, and further can be provided with a stimulus providing member.

Abstract: The present invention relates to an optical element including at least; two substrates oppositely arranged; a liquid disposed between the facing surfaces of the substrates; and a chargeable polymer disposed between the facing surfaces of the substrates for swelling or contracting by absorbing or releasing the liquid when an electric field is applied, wherein (1) an area of each adhering fixing portion is smaller than a maximum sectional area of the chargeable polymer particle at the time of maximum swelling, and (2) a non-adhesive portion surrounds each adhering fixing portion, and the non-adhesive portion is disposed at least at a largest outer circumference of the chargeable polymer particle at the time of maximum swelling and extends inside the largest outer circumference of the chargeable polymer at the time of maximum swelling.