A new method for creating materials with nanopores. It is distinguished by simplicity, scalability and industrial applications.
Modern methods of creating materials with nanoscale pores suggest the presence of two components: one is the foundation of the future of the porous sample, and the second one way or another, removed from the bulk material, freeing up space then. To have turned through- pores, remove substances must permeate the material of continuous filaments, always touching the surface of. Otherwise, it will not be able to completely withdraw from the structure.
But the new study, published on November 27 in the journal Nature, has allowed to demonstrate a more efficient and flexible method for creating porous nanostructures. This approach is called ... Researchers from Cambridge University have shown how to use the osmotic forces can be obtained nanopores, even if the removed component is completely encapsulated in the bulk material.
Lead author of the project, Isan Sivaniya (Easan Sivaniah), explains the essence of the process of COS as follows: ... If it is put into fresh water, salt will not be able to leave the ball, but fresh water is fully capable to get inside that she is doing to reduce the salt concentration inside the. The more water comes in, the more inflated balloon, and eventually it breaks ...
... Left oral osmotic attacks are connected to each other and with the surface of the material, allowing the substance impurities come out and creating a through- pores ...
Researchers have demonstrated the high efficiency obtained by this method the filter at removing particles from water dyes ( malachite green and methyl orange ). As the basic substance acted polystyrene, recycled - acrylic and solvent - acetic acid. The resulting process of COS material consisted of multiple layers of polystyrene thickness of about 65 nm, connected by ... The surface of the material was covered with pores whose size, according to scientists who were 1-2 nm.
Another possible application of the technology - the creation of multi-layer materials with unusual optical properties - was considered in conjunction with experts in photonics and optoelectronics from the University of Seville and the Cavendish Laboratory, which operates and Dr. Sivaniya. Such materials can be used to create sensors that change color when the absorption of trace ( very small) amounts of chemicals.
The authors believe that technology obtained from COS materials can also be used in the manufacture of light emitting devices, fuel cells, solar cells and electrodes for supercapacitors.

