The present disclosure provides a surface-modified alginate micro-capsule having a core-shell structure in which a core is fluidizable phase alginate, and a shell is alginate hydrogel crosslinked with epigallocatechin gallate dimer, a preparation method thereof, and a cell encapsulation method using the same.

Latex emulsions and a process of making the same that incorporates voided latex particles having a core with a hydrophilic component; at least one intermediate shell with, as polymerized units, one or more hydrophilic monoethylenically unsaturated monomer, one or more nonionic monoethylenically unsaturated monomer, or mixtures thereof; an outer shell formed of a polymer having a Tg of at least 60? C; and a surface treatment applied to the outer shell in which a plurality of silicone oligomers with reactive functional groups are cross-linked with one another in order to provide a cross-linked outer surface. The core and the at least one intermediate shell are contacted with a swelling agent in the presence of less than 0.5% monomer based on the overall weight of the voided latex particles. In addition, one or more of the core, the intermediate shell, or the outer shell includes a surfactant.

Hybrid microparticle having a polymer core and a shell which surrounds the polymer core at least in sections and which has a silicon dioxide layer; characterized by an RF value, the RF value being defined as the ratio of an external surface area amenable to the adsorption of nitrogen to a surface area which is computable from an arithmetic mean diameter of the hybrid microparticle considered as an ideal sphere, where the shell has a structure selected from: closed and smooth, with the shell having an RF value of between 1 and 1.5; closed and hillocky, with the shell having an RF value of between 1.51 and 3; or open, with the shell having an RF value of greater than 3.01.

Hybrid microparticle having a polymer core and a shell which surrounds the polymer core at least in sections and which has a silicon dioxide layer; characterized by an RF value, the RF value being defined as the ratio of an external surface area amenable to the adsorption of nitrogen to a surface area which is computable from an arithmetic mean diameter of the hybrid microparticle considered as an ideal sphere, where the shell has a structure selected from: closed and smooth, with the shell having an RF value of between 1 and 1.5; closed and hillocky, with the shell having an RF value of between 1.51 and 3; or open, with the shell having an RF value of greater than 3.01.

According to an embodiment of the present invention, provided are hollow particles which have a wall portion containing polyurethane or polyurea, have an internal porous structure, and have a plurality of opening spaces blocked by the wall portion in an outermost portion of the porous structure, and a manufacturing method thereof, and a pore forming material, particles for cosmetics, and a weight reducing material.

According to an embodiment of the present invention, provided are hollow particles which have a wall portion containing polyurethane or polyurea, have an internal porous structure, and have a plurality of opening spaces blocked by the wall portion in an outermost portion of the porous structure, and a manufacturing method thereof, and a pore forming material, particles for cosmetics, and a weight reducing material.

A method of separating a vesicle from a sample may include forming a fusant by fusing a first lipid membrane structure and the vesicle, where the vesicle may include a lipid bilayer membrane, and where the first lipid membrane structure may include a vesicular membrane-fusogenic lipid, and fusing the fusant and a second lipid membrane structure positioned at a predetermined field on a substrate.

A method of separating a vesicle from a sample may include forming a fusant by fusing a first lipid membrane structure and the vesicle, where the vesicle may include a lipid bilayer membrane, and where the first lipid membrane structure may include a vesicular membrane-fusogenic lipid, and fusing the fusant and a second lipid membrane structure positioned at a predetermined field on a substrate.

Disclosed herein is a method for fabricating a flexible colloidal crystal heterostructure. The method may include applying cold plasma treatment on a top surface of a flexible polymer substrate, horizontally depositing monodispersed polystyrene colloidal particles onto the top surface of the flexible polymer substrate, and creating a vertical temperature gradient in layers of monodispersed polystyrene colloidal particles. The vertical temperature gradient may be perpendicular to the top surface and may be created by heating an opposing bottom surface of the flexible polymer substrate.

Disclosed herein is a method for fabricating a flexible colloidal crystal heterostructure. The method may include applying cold plasma treatment on a top surface of a flexible polymer substrate, horizontally depositing monodispersed polystyrene colloidal particles onto the top surface of the flexible polymer substrate, and creating a vertical temperature gradient in layers of monodispersed polystyrene colloidal particles. The vertical temperature gradient may be perpendicular to the top surface and may be created by heating an opposing bottom surface of the flexible polymer substrate.