Method for preparing colloidal crystal by emulsion suspension

• Main Authors: TANG YONGKANG, MA LIYUN, SU WENJING, YAO TINGTING, LI GANG, GAN ZHIPING
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2018
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The invention discloses a method for preparing a colloidal crystal by emulsion suspension. The method comprises the following steps: step 1, preparing a colloidal particle suspension emulsion; step 2,injecting the colloidal particle suspension emulsion into the lower surface of a membrane substrate to be coated, and enabling the suspension emulsion to be suspended at the lower surface of the membrane substrate to be coated under attractive force of the membrane substrate to be coated to the suspension emulsion; and step 3, transferring the to-be-coated membrane substrate suspending the suspension emulsion into an atmosphere with a temperature of 40-150 DEG C, and making the dispersion liquid in the suspension emulsion evaporated to obtain the colloidal crystal. According to the invention,colloidal particles are regularly arranged under actions of force such as capillary force and self gravity generated by evaporation of the dispersion liquid, so that the colloidal crystal is prepared, when the suspension emul