Hollow fiber formed using metal nano particles
View Patent ↗A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.
1. A hollow fiber, comprising:
a hollow tube having a hollow region for transmitting a light;
a first metal thin film formed on an inner wall of the hollow tube, the first metal thin film having a chemical stability; and
a transparent thin film comprising a material chemically changed from a second metal thin film formed by baking metal nano particles dispersed in a solvent and provided on an opposite surface of the first metal thin film with respect to a surface contacting to the inner wall, the transparent thin film being transparent with respect to a wavelength of the light.
2. The hollow fiber according to claim 1 , wherein the metal nano particles comprise silver nano particles, and the transparent thin film comprises a silver iodide formed by iodizing a silver thin film formed by baking the silver nano particles dispersed in the solvent.
3. The hollow fiber according to claim 1 , wherein the metal nano particles comprise copper nano particles, and the transparent thin film comprises a copper oxide formed by oxidizing a copper thin film formed by baking the copper nano particles dispersed in the solvent.