B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 19/00 (2006.01) B82B 3/00 (2006.01)
Patent
CA 2569222
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.
L~invention se propose de fabriquer des particules de taille nanométrique et uniforme en grande quantité en un court laps de temps grâce à un procédé facile à réaliser. De plus, même si l~on dispose déjà d~une technique de remplissage de matériau nanoporeux avec un métal depuis les fonds des pores selon un procédé d~électrodéposition, etc. et d~une technique de chargement selon un procédé gel sol, il n~existe aucun procédé susceptible de sceller les ouvertures de pores ni d~élaboration de nanocapsules. On place un matériau en film mince à la surface d~un matériau nanoporeux, et l~on met sous pression le matériau en film mince pour découper le matériau en film mince autour de chaque surface poreuse du matériau nanoporeux, avant de l~enfoncer à l~intérieur du pore. On obtient ainsi une nanostructure consistant en matériau nanoporeux dont l~intérieur des pores est rempli du matériau en film mince découpé et introduit dans celui-ci par l~ouverture de celui-ci. On peut obtenir des nanoparticules constituées du matériau en film mince servant au remplissage, en retirant le matériau nanoporeux de la nanostructure. On peut fabriquer des nanocapsules ayant un couvercle constitué d~un matériau en film mince chargé au voisinage de l~ouverture de pore, en revêtant au préalable d~un film mince toute la surface de paroi poreuse d~un matériau nanoporeux, puis en donnant au film mince appliqué sur toute la surface de paroi poreuse une structure tubulaire.
Itoh Hironori
Nomura Shintaro
Japan Science And Technology Agency
Kirby Eades Gale Baker
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