Abstract:
A superhydrophobic coating film, and a method for forming the superhydrophobic coating film are provided to improve self-cleaning property and to allow a nanofiber comprising inorganic particles to be prepared relatively easily and massively. A superhydrophobic coating film comprises at least two kinds of inorganic particles having different diameter. Also the superhydrophobic coating film comprises at least two kinds of inorganic particles having different diameter which are dispersed in a polymer solution. Preferably the inorganic particles are selected from the group consisting of silica, titanium dioxide, alumina, ceria and zirconium oxide. Preferably the polymer of the polymer solution is selected from polyethylene oxide, polyacrylamide, poly(vinyl alcohol), polyethylene glycol, polyacrylonitrile, poly(vinyl pyrrolidone), polystyrene, polycaprolactone, and polyethylene terephthalate.
Abstract:
PURPOSE: A producing method of a spherical micro-pore and a metal structure is provided to produce the spherical micro-pore with the patterned large area without using a vacuum device. CONSTITUTION: A producing method of a spherical micro-pore and a metal structure comprises the following steps: forming a single layered or multi layered colloidal particle film on a polymer film; forming an impregnated structure of a colloidal particle by heating the structure from the previous step; selectively removing colloid form the impregnated structure; and selectively alloying metal to the impregnated colloidal particle. The colloidal particle is a spherical particle in the size of 1nanometers~100micrometers. A polymer material forming the polymer film is a thermoplastic resin formed with a polymer selected from the group consisting of a styrene polymer, an acryl polymer, and an epoxy polymer.
Abstract:
PURPOSE: A microcapsule is provided to transfer and release a target material which is smaller than the microcapsule, and to be used as a microcarrier by using an anisotropic swelling phenomenon. CONSTITUTION: A method for preparing a microcapsule using the anisotropic swelling of a bilayer hydrogel microparticle comprises: a step of forming a hydrogel layer with a swelling property; a step of adding a polymer layer which does not swell to the formed hydrogel layer, and forming a bilayer hydrogel microparticle; and a step of forming the microcapsule by swelling the formed bilayer hydrogel microparticle. [Reference numerals] (AA) Bilayer microparticles; (BB) Hydogel layer; (CC) Polymer layer; (DD) Microcapsules;
Abstract:
PURPOSE: A method for manufacturing an optofluidic element in which a metallic sphere gap nano structures are accumulated is provided to reduce costs and time for a process and simplify a process condition by using a self-assembly phenomenon of colloid. CONSTITUTION: A method for manufacturing an optofluidic element in which a metallic sphere gap nano structures are accumulated comprises next steps. Colloid particle layer of a single story, in which colloid particles are regularly arranged, is formed on the top of a polymer thin film, thereby being dipped into the polymer thin film. The colloid particles dipped into the polymer thin film are eliminated so that a spherical pore structure of a nano meter scale is formed on the polymer thin film. A metallic thin film is deposited so that a metallic thin film in the inside of a gap and the metallic thin film on the top of the polymer thin film are discontinuously formed. A patterned metallic structure is manufactured by using an UV-crosslinkable polymer. Minute flexible fluidic elements are integrated in the patterned metallic structure. [Reference numerals] (AA) Colloid particle; (BB) Impregnation; (CC) Eliminating colloid particle; (DD) Polymer; (EE) Depositing metal thin film