PROCESS FOR PRODUCING NANOPARTICLE OR NANOSTRUCTURE WITH USE OF NANOPOROUS MATERIAL

摘要

An object is to produce uniformly sized, nanosized microparticles in a short time in large numbers by a simple procedure. Although a technique of filling micropores of nanoporous material with a metal from the bottoms of the micropores by electrodeposition or by a sol-gel method has been available, there has been no process for covering the openings of the micropores or process for producing nanocapsules. A nanostructure including a nanoporous material having micropores filled with a fragmented thin-film material from the opening-side of each micropore, the nanoporous material being obtained by placing a thin-film material on a surface of a nanoporous material and pressing the thin-film material so that the thin-film material is cut out at the surface edge of each micropore of the nanoporous material and pressed into the micropore. By removing the nanoporous material form the nanoporous material, microparticles constituted from the thin-film material that filled the nanoporous material are obtained. By covering all the wall surfaces of the micropores of the nanoporous material in advance, nanocapsules each constituted from a tubular structure composed of the thin film covering the entire wall surface of the micropore and a cover made of a thin-film material filled in the vicinity of the opening of the micropore can be formed.