Abstract: Shown is a bimesogenic compound having high solubility in a liquid crystal compound, a liquid crystal composition, a chiral dopant, an additive including an antioxidant or an ultraviolet light absorber, and a polymerizable liquid crystal compound, each of which is used in other bimesogenic compounds or a liquid crystal display device, while maintaining desired physical properties. A compound is represented by formula (1), a liquid crystal composition contains the compound, conjugate fibers with an encapsulated liquid crystal obtained from the liquid crystal composition, and a liquid crystal display device is obtained from the conjugate fibers with the encapsulated liquid crystal.

Abstract: A Polyvinylidene fluoride-based microporous membrane comprising: a substrate film; and the following microporous membrane, wherein the microporous membrane is an asymmetric membrane, and has a skin layer in which micropores are formed and a support layer which supports the skin layer and in which pores larger than the micropores are formed, a material of the microporous membrane is a polyvinylidene fluoride-based resin, the skin layer has a plurality of spherical bodies, a plurality of linear binding materials extend three-dimensionally from the respective spherical bodies, the adjacent spherical bodies are connected with each other by the linear binding materials to form a three-dimensional network structure where the spherical bodies serve as intersections, and the number of defects (the number of colored coarse voids) is less than 20.

Abstract: A liquid crystal compound is represented by formula (1): In formula (1), R1 is alkyl or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2 and Z3 are independently a single bond, —CF2O— or the like; X1 is fluorine, chlorine, —CF3 or the like; L1 and L2 are independently hydrogen, fluorine or the like; a and b are independently 0, 1, 2 or 3; and W is a group represented by formula (1a) or formula (1b); In formula (1a) and formula (1b), L3 to L8 are independently hydrogen, fluorine or the like.

Abstract: A liquid crystalline compound, a liquid crystal composition, and a liquid crystal display element are provided. The liquid crystalline compound satisfying at least one physical property among high stability against heat and light, high transparency, low minimum temperature of the liquid crystal phase, low viscosity, proper optical anisotropy, negatively large dielectric anisotropy, proper elastic constant, good compatibility with other liquid crystalline compounds at room temperature and low temperature. The liquid crystalline compound represented by formula (1).

Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics including a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or the liquid crystal composition having a suitable balance regarding at least two of the above characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having small viscosity as a second component, and may contain a specific component having high maximum temperature or small viscosity as a third component, a specific component having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive.

Abstract: A liquid-crystal-composition has negative-dielectric-anisotropy and contains at least one compound selected from polar compounds represented by formula (1) as first-additive and at least one compound selected from compounds represented by formula (2) as first-component, and a liquid-crystal-display-device includes the composition. In formulas (1) and (2), R1 is hydrogen, halogen or 1-12C alkyl, R2 is a group represented by —OH, —OR0, —NH2, —NHR0 or —N(R0)2, in which R0 is 1-5C alkyl; R3 and R4 are independently 1-12C alkyl or 2-12C alkenyl; rings A, B and C are independently 1,4-cyclohexylene or 1,4-phenylene; ring D is 1,4-phenylene in which at least one hydrogen is replaced by fluorine or chlorine; Z1, Z2 and Z3 are independently single-bond; Sp1 and Sp2 are independently single-bond, 1-7C alkylene; a is 0 to 4; and b is 0 to 1.

Abstract: The disclosure provides a liquid crystalline compound that has at least one of physical properties such as high stability with respect to heat and light, a high clearing point (or a high upper limit temperature), a low lower limit temperature of a liquid crystal phase, a low viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant, favorable compatibility with other liquid crystalline compounds at room temperature and low temperatures, a liquid crystal composition including the compound, and a liquid crystal display element including the composition. The compound is represented by Formula (1). Here, R1 is an alkyl group having 2 to 10 carbon atoms in which one —CH2CH2— is substituted with —CH?CH—; R2 is an alkyl group having 1 to 8 carbon atoms; ring A1 is 1,4-cyclohexylene; Y1 and Y2 are hydrogen or fluorine; Z1 is a single bond; and n1 is 1 or 2.

Abstract: A polymerizable liquid crystal composition is presented which can form a polymer that allows formation of a uniform homeotropic alignment even without forming an alignment film on the supporting substrate and has excellent chemical strengths such as heat resistance and solvent resistance. The polymerizable liquid crystal composition includes at least one type of polyfunctional polymerizable liquid crystal compound and a cardo-type fluorene monomer, wherein based on a total amount of the polyfunctional polymerizable liquid crystal compound, a content of a monofunctional polymerizable liquid compound is less than 5.0% by weight.

Abstract: A compound represented by Formula (1): R1 is hydrogen or an alkyl group that may be substituted; rings A1 to A2 are cyclohexylene or phenylene that may be substituted; a is 0 to 4; Z1 is a single bond or an alkylene group that may be substituted; Sp1 to Sp3 are a single bond or an alkylene that may be substituted; M1 to M4 are H, F, Cl, or an alkyl group that may be substituted; R2 and R3 are hydrogen, a group represented by Formula (1-a), or an alkyl group having 1 to 5 carbon atoms that may be substituted; and at least one of R2 and R3 is a group represented by Formula (1-a); Sp4 is a single bond or an alkylene group that may be substituted; R4 and R5 are hydrogen or an alkyl group; and at least one of R4 and R5 is an alkyl group.

Abstract: A liquid crystal composition satisfies at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and high stability to ultraviolet light, or having a suitable balance regarding at least two of the characteristics. The liquid crystal composition contains a quencher as an additive, and may contain a specific compound having large positive dielectric anisotropy as a first component, a specific compound having high maximum temperature or small viscosity as a second component, or a specific compound having large negative dielectric anisotropy as a third component.

Abstract: A material for a negative electrode active material having capability of achieving excellent cycle performance while maintaining satisfactory initial efficiency (initial capacity), a production method for the material, a composition for a negative electrode, using the material, a negative electrode, and a secondary battery. A core-shell structure that includes the following components (A) and (B), and satisfies the following conditions (i) and (ii): (A): a core containing at least Si (silicon), O (oxygen) and C (carbon) as a constituent element, and containing crystalline carbon and non-crystalline carbon as a constituent; and (B): a shell involving the core, and including a SiOC structure having a graphene layer, and (i): having an atomic composition represented by formula SiOxCy (0.5<x<1.8, 1.0<y<5.0), and (ii): having a predetermined value of less than 1.0×105 ?·cm in specific resistance determined by powder resistance measurement.

Abstract: To provide a polar compound having high chemical stability, a high ability to align liquid crystal molecules, and high solubility in a liquid crystal composition, and a high voltage holding ratio of a liquid crystal display element. A compound represented by Formula (1): R1 is a hydrogen atom or an alkyl group that may be substituted; a is 2 to 12; and R2 is Formula (1-a), Formula (1-b), and Formula (1-c); Sp1 to Sp3 are a single bond or an alkylene group that may be substituted; M1 and M2 are H, F, Cl, or an alkyl group that may be substituted; and X1 is —OH, —NH2, —OR3, —N(R3)2, —COOH, —SH or —Si(R3)3.

Abstract: Since a switching element using a nematic liquid crystal medium has a long response time, there is a limit to the number of control instances over a certain time. By using a liquid crystal composition exhibiting an optical isotropic phase, an element capable of performing polarization control at high speed is provided. A mixture comprising the liquid crystal composition and polymerizable monomers, a polymer/liquid crystal composite material obtained by polymerizing the mixture, an element comprising the liquid crystal composition or the polymer/liquid crystal composite, and a LIDAR comprising the element are provided.

Abstract: A liquid crystal composition without requiring an alignment film or alignment treatment on a substrate. The problem is solved by a low molecular weight polar compound capable of homogeneously aligning a liquid crystal medium relative to the substrate, for example, a low molecular weight polar compound represented by formula (1): M-P??(1) In formula (1), M is a nonpolar group having 1 or more carbons, and P is a polar group.

Abstract: To provide a polymerizable liquid crystal compound in order to produce a retardation film having excellent front contrast. A polymerizable liquid crystal composition including a compound represented by Formula (1). In Formula (1), for example, W1 is an alkoxycarbonyl group having 1 to 10 carbon atoms, an alkanoyl group having 1 to 10 carbon atoms, or a polymerizable functional group, A1 is independently 1,4-phenylene or naphthalene-2,6-diyl, Z1 is a linking group, m and n are independently an integer of 0 to 7, and satisfy 3?m+n?8, and P1 is a polymerizable functional group.

Abstract: Provided is a silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product that is represented by the general formula SiOxHy (0.01<x?0.3, 0<y<0.35) and has Si—H bonds, said silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product being characterized by (A) including more than 65.0 wt % of silicon nanoparticles that have a volume-based average particle size of 10-500 nm, exclusive, and that do not include particles having a particle size of 1000 nm or larger, and (B) including a silicon oxide structure derived from hydrogen polysilsesquioxane that coats the silicon nanoparticles and is chemically bonded to the surfaces of the silicon nanoparticles.

Abstract: Polysilsesquioxane covering silicon nanoparticles, or a calcined product thereof, comprising silicon nanoparticles, which have a volume-basis mean particle size of 10-500 nm, exclusive, and do not include particles having a particle size of 1000 nm or larger, and polysilsesquioxane, which covers the silicon nanoparticles and is chemically bonded to the surfaces of the silicon nanoparticles, said polysilsesquioxane covering silicon nanoparticles or the calcined product thereof having Si—H bonds. When observed using a transmission electron microscope (TEM), the thickness of the polysilsesquioxane is 1-30 nm, inclusive.

Abstract: A silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product-metal oxide complex comprising a silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product and a metal oxide, wherein the silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product contains 5 wt % to 95 wt % of silicon nanoparticles having a volume-based mean particle size of more than 10 nm but less than 500 nm, and a hydrogen polysilsesquioxane-derived silicon oxide structure that coats the silicon nanoparticles and is chemically bonded to the surfaces of the silicon nanoparticles. The silicon nanoparticle-containing hydrogen polysilsesquioxane sintered product is represented by the general formula SiOxHy (0.01<x<1.35, 0<y<0.35) and has Si—H bonds. The metal oxide consists of one or more metals selected from titanium, zinc, zirconium, aluminum, and iron.

Abstract: Liquid crystal compound satisfying at least one of physical properties such as high stability to heat or light, high maximum temperature, high clearing point, low minimum temperature of liquid crystal phase, small viscosity, suitable optical-anisotropy, large negative dielectric-anisotropy, suitable elastic constant and good compatibility with other liquid crystal compounds; liquid crystal composition containing the compound; and liquid crystal display device including the composition. Compound represented by formula (1), wherein R1 is alkyl having 1 to 15 carbons; R2 is alkyl having branched-chain and 3 to 15 carbons; A1, A2 are independently 1,2-cyclopropylene; Z1, Z2 are independently single bond or alkylene having 1 to 15 carbons; L1, L2 are fluorine, chlorine, —OCF3 or —OCH2F; X1, X2 are oxygen or sulfur; and a is 0 or 1, b is 0 or 1, and sum of a and b is 0, 1 or 2.

Abstract: A liquid crystal compound having positive dielectric anisotropy is provided and contains a compound represented by formula (1) as a first component, a compound represented by formula (2) as a second component, a polar compound as a first additive and a polymerizable compound as a second additive. In formula (1), R1a is alkyl having 1 to 12 carbons, or the like; ring Q and ring S are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1a and Z2a are independently a single bond or the like; X1a and X2a are independently hydrogen or fluorine; Y1a is fluorine, chlorine, alkyl having 1 to 12 carbons in which at least one hydrogen is replaced by fluorine or chlorine, or the like; q is 1, 2, 3 or 4; s is 0, 1, 2 or 3; and a sum of q and s is 4 or less.