Abstract: An infrared cut filter including a film that includes a cyanine dye including a cation having a polymethine and a nitrogen-containing heterocycle at each end of the polymethine, and a tris(pentafluoroethyl)trifluorophosphate anion, and a copolymer including a first repeating unit from a first monomer that is an acrylic monomer having a cyclic ether group, and a second repeating unit from a second monomer that is a monomer having a functional group that reacts with the cyclic ether group.

Abstract: A resin composition including a resin R including a repeating unit having a partial structure of Formula (I) or (II): where QA is an ester bond shown in the Formula (I), RA is a substituent group, n1 is any of integers 1 to 5, * is a bonding site with a remainder of the repeating unit, and ** is a bonding site with a phenyl group in the Formula (I); where QB is a linking group or a single bond other than the ester bond of QA in Formula (I), RB is a substituent group, with at least one RB being a hydroxyl group, n2 is any of integers 1 to 5, and * is a bonding site with a remainder of the repeating unit.

Abstract: An infrared cut-off filter, including a cyanine dye and a copolymer. The cyanine dye includes tris(pentafluoroethyl) trifluorophosphate and a cation having a polymethine and a nitrogen-containing heterocycle at each end of the polymethine. The copolymer includes a first repeating unit from a first monomer and a second repeating unit from a second monomer different from the first monomer. The first monomer includes a phenolic hydroxyl group.

Abstract: An infrared cut-off filter including a cyanine dye including a tris(pentafluoroethyl) trifluorophosphate anion and a cation having a polymethine and a nitrogen-containing heterocycle located at each end of the polymethine, and an acrylic polymer having a unit structure of formula (1).

Abstract: A method for manufacturing a needle-shaped body, including supplying a first aqueous solution to an intaglio plate, supplying a second aqueous solution to the intaglio plate, drying the first and second aqueous solutions in the intaglio plate such that a dried body is formed on the intaglio plate, and separating the dried body from the intaglio plate such that a needle-shaped body including a needle-shaped projection and a support base which supports the needle-shaped projection is obtained. The intaglio plate includes a recess corresponding to the needle-shaped projection, the first aqueous solution is supplied to fill at least a portion of the recess, the first aqueous solution and the second aqueous solution are immiscible, the first aqueous solution forms a projection side layer in the needle-shaped body, and the second aqueous solution forms a support base side layer on the projection side layer in the needle-shaped body.

Abstract: A method of manufacturing an acicular body including a support substrate and a needle formed on the support substrate, includes: supplying a needle forming solution onto an intaglio plate having a recess that has a shape corresponding to the needle; disposing a film on the needle forming solution; compressing the needle forming solution from above the film such that the needle forming solution is moved into the recess; and removing a liquid component from the needle forming solution inside the recess such that the needle forming solution is solidified and that the needle is formed.

Abstract: A method for manufacturing a needle-shaped body, including supplying a first aqueous solution to an intaglio plate, supplying a second aqueous solution to the intaglio plate, drying the first and second aqueous solutions in the intaglio plate such that a dried body is formed on the intaglio plate, and separating the dried body from the intaglio plate such that a needle-shaped body including a needle-shaped projection and a support base which supports the needle-shaped projection is obtained. The intaglio plate includes a recess corresponding to the needle-shaped projection, the first aqueous solution is supplied to fill at least a portion of the recess, the first aqueous solution and the second aqueous solution are immiscible, the first aqueous solution forms a projection side layer in the needle-shaped body, and the second aqueous solution forms a support base side layer on the projection side layer in the needle-shaped body.