Abstract:
A noble preparation method of high functional nonspherical colloidal particles is provided, wherein the nonspherical colloidal particles can be applied as a base material of optoelectronic devices since the nonspherical colloidal particles have a regular and unique structure instead of a spherical structure and have two different physical properties in one self-assembled structure. A preparation method of a high functional nonspherical colloidal self-assembly comprises mixing a mixed solution of first colloidal particles and second colloidal particles smaller than the first colloidal particles with a continuous phase liquid; applying a shear stress to a mixture to obtain a droplet; and removing a solvent from the droplet to form a colloidal self-assembly. A preparation method of a high functional nonspherical porous structure comprises the steps of: mixing a mixed solution comprising first colloidal particles and second colloidal particles smaller than the first colloidal particles with a continuous phase liquid, applying a shear stress to a mixture to obtain a droplet, and removing a solvent from the droplet to prepare a high functional nonspherical colloidal self-assembly; and removing the first colloidal particles from the high functional nonspherical colloidal self-assembly.
Abstract:
A method for preparing micrometer-sized particles is provided to form nanoparticles having micrometer-level sizes or more easily, by applying nanoparticles into liquid droplets and evaporating the liquid droplets. Sphere-shaped nanoparticle agglomerates are formed by removing solvent from liquid droplets, thereby producing spherical micro-particles. The liquid droplets contain nanoparticles and dyes therein, and the liquid droplets are obtained by adding 0.5-5 wt% of surfactant based on 100 wt% of the solvent into continuous solvent. Composite particles are dispersed in the liquid droplets, wherein the composite particles contain two or more kinds of nanoparticles. Further, the nanoparticle is a non-organic particle, an organic particle or a compound particle of the non-organic particle and the organic particle.