| 摘要 |
<p>An object of the present invention is to provide a multilayer structured particle which can transmit or reflect light having a specific wavelength selectively within a wide range and a simple and easy method for producing the same. The multilayer structured particle of the present invention is characterized in that a central layer (L0) is provided as a core and two or more layers (Ln) are disposed concentrically with respect to the center of the core, wherein every pair of adjacent layers has a refractive index difference of from 0.01 to 1.5 and at least one layer of the central layer (L0) and the layers (Ln) is a metal oxide layer (M). The method of the present invention for producing a multilayer structured particle is characterized in that the method includes at least two steps, a repetition of at least two steps, or a repetition of at least one step selected from the group consisting of production step (10) of using pulse laser irradiation, production step (20) of using a gaseous metal compound, production step (30) of using a sol-gel method or a double micell layer, and utilization of a sol-gel method (40); or production step (50) of using a double micell layer or production step (60) of using opposite charges.</p> |
