Abstract: The antifouling structure of the present invention includes an oxide layer, a surface modification layer that modifies the surface of the oxide layer, and an antifouling liquid retained in the surface modification layer. And in the antifouling structure, the surface modification layer is a modification layer derived from a silane coupling agent; the antifouling liquid includes a first antifouling liquid satisfying Equation (1) below and a second antifouling liquid satisfying Equation (2) below; and the volume ratio (first antifouling liquid/second antifouling liquid) of the first antifouling liquid to the second antifouling liquid is from 1/2 to 100/1: Y?3X+2000??Equation (1) Y>3X+2000??Equation (2) in which, in Equations (1) and (2), Y represents the average molecular weight of the antifouling liquid, and X represents a kinematic viscosity (cSt) at 20° C. of the antifouling liquid.

Abstract: A polymer particle coated with silica comprising: a polymer particle derived from a polymerizable vinyl-based monomer; and a silica film covering the polymer particle, which makes a surface of the polymer particle expose so that an aperture ratio of 0.1 to 1 is possessed and a height h of the silica film and a diameter D of the polymer particle coated with silica have a relationship of 0.5?h/D<1, wherein the silica film includes a polyalkoxysiloxane oligomer condensate.

Abstract: A polymer particle coated with silica comprising: a polymer particle derived from a polymerizable vinyl-based monomer; and a silica film covering the polymer particle, which makes a surface of the polymer particle expose so that an aperture ratio of 0.1 to 1 is possessed and a height h of the silica film and a diameter D of the polymer particle coated with silica have a relationship of 0.5?h/D<1, wherein the silica film includes a polyalkoxysiloxane oligomer condensate.