A colloidosome with a variable pore size and a preparation method thereof are provided. The preparation method includes the steps of modification of nanoparticles, preparation of amphiphilic nanoparticles, preparation of a colloidosome with a variable pore size and the like. Through specific setting of each step, the finally prepared colloidosome is stable and has a variable pore size, and a hydrophobic polymer chain in a cavity of the colloidosome has corresponding contraction and extension forms in different medium environments, such as water and oil, to block or expose pores, so as to meet application requirements for transmission in selective media.

Systems, methods, and compositions provided herein relate to preparation of beads encapsulating biomolecules for performing sequential reactions on the biomolecules. Some embodiments include preparation of nucleic acid reactions within the bead, wherein the bead includes pores that allow diffusion of molecules into or out of the beads while retaining other molecules of interest.

A multi-compartment microcapsule quenches fluorophores in response to a stimulus. In some embodiments, the multi-compartment microcapsules have first and second compartments separated by an isolating structure adapted to change in permeability in response to the stimulus, wherein the first and second compartments contain reactants that come in contact and react to quench a fluorescent compound when the isolating structure changes in permeability.

Hollow particles each having a shell composed of at least one layer, wherein the at least one layer contains a nitrogen atom-containing resin having a refractive index of 1.57 or less.

The wet adhesion of a coating composition may be improved through the use of voided latex particles as opacifying agents which contain a hollow interior as well as an outer shell of a polymer containing functional groups such as amino, 1,3-diketo, urea or ureido. Other types of functional groups may be introduced to the outer shell polymer in order to vary other desired characteristics of the coating. The voided latex particles are non-film-forming.

There is provided a method of producing silica capsules, the method comprising: adding a silica precursor to emulsified droplets in the presence of salt and alcohol to enhance silica growth around the emulsified droplets by an ion association effect, thereby forming silica capsules. Also provided are silica capsules producible by such a method.

A fluid storage media includes a plurality of microspheres. Each microsphere includes a porous core with a porous core material and having an exterior surface. A stored fluid is within the porous core. A coating layer covers all of the exterior surface of the porous core. The coating layer includes a coating material which transitions from a first state to a second state, wherein in the first state the coating material is permeable to the stored fluid, and in the second state the material is impermeable to the stored fluid. The coating material in the second state is configured to encapsulate and maintain the stored fluid inside the porous core. A method of making a fluid storage media, a method of delivering a fluid and a method of delivering a biologically active fluid medication to a patient are also disclosed.

In one embodiment this, invention relates to preparing non-conducting polymer-based partially-open, hollow reservoirs (POHR) in the nano-size to micro-size range that encapsulate an additive, which can be released from the reservoirs. This invention also relates to methods of preparing such POHR, and for releasing the additive. This invention further relates to matrix that comprises such reservoirs and the method of preparing such matrix. This invention also relates to applications, for example in bio-active mitigation or enhancement, corrosion inhibition, lubrication, and adhesion, that benefit from using such release of a functional additive (FA).

A method for synthesizing carbon nanocages, including N-doped carbon nanocages, includes a first step of forming a solution including a metal salt and an organic carbon source; a second step of drying the solution to obtain a precursor powder; and a third step of annealing the precursor powder to obtain a nanocage including a metal nanoparticle surrounded by a carbon shell. The metal nanoparticle is then removed from the carbon shell by applying an acid solution.

One embodiment of the present disclosure provides a method for producing an angle-independent colloidal particles-based structure, the method having: preparing two or more types of hollow colloidal particles, wherein the types are distinguished based on a size of the hollow colloidal particles thereof, wherein the types have different particle sizes; and dispersing the at least two types of hollow colloidal particles to produce an amorphous structure, wherein the amorphous structure realizes the same color independently of an angle of an incident light thereto.