A method for producing a cholesteric liquid crystal layer is a method that can produce a cholesteric liquid crystal layer whose reflection surface is not parallel to a substrate surface by a simple method. The method includes: a step 1 of forming a composition layer satisfying a condition 1, a condition 2, or a condition 3 on a substrate, using a liquid crystal composition including a liquid crystal compound; and a step 2 of subjecting the composition layer to a treatment for cholesterically aligning the liquid crystal compound in the composition layer to form a cholesteric liquid crystal layer.

A method for producing a cholesteric liquid crystal layer is a method that can produce a cholesteric liquid crystal layer whose reflection surface is not parallel to a substrate surface by a simple method. The method includes: a step 1 of forming a composition layer satisfying a condition 1, a condition 2, or a condition 3 on a substrate, using a liquid crystal composition including a liquid crystal compound; and a step 2 of subjecting the composition layer to a treatment for cholesterically aligning the liquid crystal compound in the composition layer to form a cholesteric liquid crystal layer.

Provided is an optically anisotropic layer with which an image display device having suppressed occurrence of oblique light leakage can be manufactured; and an optical film, a polarizing plate, and an image display device, each having the optically anisotropic layer. The optically anisotropic layer is obtained by curing a polymerizable liquid crystal composition including a predetermined rod-like liquid crystal compound and a predetermined monofunctional compound, and immobilizing an alignment state of the rod-like liquid crystal compound, in which a number a1 of atoms of the rod-like liquid crystal compound and a number a2 of atoms of the monofunctional compound satisfy a relationship of Expression (1): 0.2<a2/a1≤0.68, and the rod-like liquid crystal compound is immobilized in a state of being vertically aligned with respect to the main surface of the optically anisotropic layer.

An object of the present invention is to provide a liquid crystal polymer film having a low dielectric loss tangent. In addition, an object of the present invention is to provide a laminate having the liquid crystal polymer film.

The liquid crystal polymer film includes a liquid crystal polymer and a filler, in which, in a case where the liquid crystal polymer film includes one kind of the filler, a dielectric loss tangent of the filler under conditions of 25° C. and a frequency of 10 GHz is 0.0020 or less, and in a case where the liquid crystal polymer film includes two or more kinds of the fillers, a mass average value of dielectric loss tangents of the two or more kinds of the fillers under the conditions of 25° C. and a frequency of 10 GHz is 0.0020 or less, and a ratio of a volume occupied by the filler is 10% by volume or more with respect to a total volume of the liquid crystal polymer film.

An object of the present invention is to provide a liquid crystal polymer film having a low dielectric loss tangent. In addition, an object of the present invention is to provide a laminate having the liquid crystal polymer film.

The liquid crystal polymer film includes a liquid crystal polymer and a filler, in which, in a case where the liquid crystal polymer film includes one kind of the filler, a dielectric loss tangent of the filler under conditions of 25° C. and a frequency of 10 GHz is 0.0020 or less, and in a case where the liquid crystal polymer film includes two or more kinds of the fillers, a mass average value of dielectric loss tangents of the two or more kinds of the fillers under the conditions of 25° C. and a frequency of 10 GHz is 0.0020 or less, and a ratio of a volume occupied by the filler is 10% by volume or more with respect to a total volume of the liquid crystal polymer film.

Methods for colloidal particle manipulation mediated by an elastic fluid responsive to changes in boundary conditions, including methods of controlling motion of colloidal particles using wavy wall boundary conditions. Methods for driving transitions in topological defect configurations of colloidal particles using wavy wall boundary conditions.

Methods for colloidal particle manipulation mediated by an elastic fluid responsive to changes in boundary conditions, including methods of controlling motion of colloidal particles using wavy wall boundary conditions. Methods for driving transitions in topological defect configurations of colloidal particles using wavy wall boundary conditions.

A liquid crystal emulsification method that can reduce formulation restriction and adjust the size of a dispersed phase with small variation in size of the dispersed phase, and a liquid crystal emulsion are provided. The liquid crystal emulsification method includes: adding a moisture content and/or an oil content at a predetermined ratio to a surfactant having an HLB falling within a predetermined range; and setting a temperature during formation of a dispersion or an emulsion to a predetermined temperature, to adjust a lamellar liquid crystal having a regular molecular arrangement in which the oil content and/or the moisture content are alternately arranged in a bilayer membrane formed from the surfactant.

A liquid crystal emulsification method that can reduce formulation restriction and adjust the size of a dispersed phase with small variation in size of the dispersed phase, and a liquid crystal emulsion are provided. The liquid crystal emulsification method includes: adding a moisture content and/or an oil content at a predetermined ratio to a surfactant having an HLB falling within a predetermined range; and setting a temperature during formation of a dispersion or an emulsion to a predetermined temperature, to adjust a lamellar liquid crystal having a regular molecular arrangement in which the oil content and/or the moisture content are alternately arranged in a bilayer membrane formed from the surfactant.

A polymer film is provided, the polymer film comprises a liquid crystal polymer, comprising a soluble liquid crystal polymer and an insoluble liquid crystal polymer; and a polyimide polymer, accounting for 5 wt % or more of the polymer film. A method for manufacturing the polymer film is also provided, the method for manufacturing the polymer film comprises steps: providing a liquid crystal polymer powder, a particle size of the liquid crystal polymer powder is 0.1 um to 20 um; providing a liquid crystal polymer glue, a solid content of which is greater than 3 wt %; providing a polyamic acid glue; mixing the liquid crystal polymer powder, the liquid crystal polymer glue and the polyamic acid glue into a mixed solution, the mixed solution is made into a gel film, and the gel film is baked at a temperature of 300° C. to form a polymer film.