Abstract:
Provides are a porous separator that prevents a short-circuit between two electrodes by using a porous nanofiber web where nanofibers have a core-shell structure, to thereby promote safety and thinning simultaneously. The porous separator includes: a porous nonwoven fabric playing a support role and having micropores; and a porous nanofiber web that is laminated on one side of the porous nonwoven fabric, and plays a role of an adhesive layer and an ion-containing layer when the porous nanofiber web is in close contact with an opposed electrode, wherein a portion of the porous nanofiber web is incorporated in a surface layer of the porous nonwoven fabric, to thus partially block pores of the porous nonwoven fabric and to thereby lower porosity of the porous nonwoven fabric. The porous nanofiber web has nanofibers obtained by spinning a mixture of a swellable polymer and a non-swellable polymer to have a core-shell structure.
Abstract:
Provided is a wearable device having a flexible battery, and the wearable device includes: a functional unit; a band unit that fixes the functional unit to a wrist of a user; and a thin plate flexible battery that is embedded in the band unit and supplies power to the functional unit.
Abstract:
This disclosure provides a three-dimensional (3D) microenvironment presenting defined biochemical and physical cues that regulate cellular behavior and use of the microenvironment. A composition to form the 3D microenvironment is provided by combining one or more natural or synthetic polymeric materials and substrate proteins recombinantly or chemically functionalized with a variety of bioactive peptides such as extracellular matrix-derived or growth factor-derived peptides. The disclosure also provides for devices and methods for screening for optimal combinations of the bioactive motifs in order to create an extracellular microenvironment that can regulate specific cellular behavior such as cell growth, proliferation, migration or differentiation.
Abstract:
Provided are a heat radiation member and a mobile terminal having the same, in which the heat radiation member includes: a heat radiation sheet configured to disperse and radiate transferred heat and block and insulate transferred heat; and a passage formed in the heat radiation sheet and configured to pass a communication radio signal, wherein the passage comprises at least one punching area penetrating the heat radiation sheet.
Abstract:
Provided are an ion-exchange membrane and a filter module using the same. The ion-exchange membrane includes: a porous membrane that is formed by accumulating nanofibers obtained by electrospinning an ion-exchange solution, or a non-pore membrane that is formed by accumulating liquid droplets obtained by electrospraying an ion-exchange solution.
Abstract:
Provided are a deionization composite electrode, a method of manufacturing the deionization composite electrode, and a deionization apparatus using the same. The deionization composite electrode includes: a porous substrate having fine pores; an ion exchange membrane that is formed by electrospraying an ion exchange solution on one surface of the porous substrate; and a conductive film that is formed on the other surface of the porous substrate.
Abstract:
Provided are filter media for liquid filters and a method of manufacturing the same, in which a thin filter layer is formed and the content of nanofibers weighs light, by laminating a low weight nanofiber web on a porous nonwoven fabric, and thus a less differential pressure is applied before and after filtering, to thereby increase a pass flow rate. The filter medium includes: a porous support that plays a strength support role; and a nanofiber web that is laminated on one side of the porous support and is made of nanofibers of a polymer material, in which the nanofiber web comprises fine pores of a three-dimensional structure, through which a liquid to be treated passes, wherein content of the nanofibers is less than 5 gsm.
Abstract:
Provided are a filter medium, a manufacturing method thereof, and a filter apparatus using the filter medium. The filter medium includes: a porous substrate; a nanofiber web that is laminated on both sides of the porous substrate, and that has a number of fine pores formed by electrospinning a polymer material; and an adhesive unit for adhering the porous substrate and the nanofiber web integrally, wherein the adhesive unit is achieved by applying heat whose temperature is lower than the melting point of the porous substrate and higher than the melting point of the nanofiber web.
Abstract:
A manufacturing method of an amorphous soft magnetic core using a Fe-based amorphous metallic powder includes size-sorting an amorphous metallic powder obtained by pulverizing an amorphous ribbon prepared by a rapid solidification process (RSP) and then using the amorphous metallic powder having a particle size distribution so as to comprise 10 to 85 wt. % of powder having a particle size of 75 to 100 μm, 10 to 70 wt. % of powder having a particle size of 50 to 75 μm, and 5 to 20 wt. % of powder having a particle size of 5 to 50 μm to manufacture an amorphous soft magnetic core with excellent high-current DC bias characteristic and good core loss characteristic.
Abstract:
Provided is an organic thin film forming apparatus, an organic thin film forming method, and a method of manufacturing an organic thin film device using the same, in which an organic light-emitting layer (photoactive layer) and/or an electron transport layer can be formed on a substrate when an organic light emitting diode (OLED) or an organic solar cell is manufactured. The organic thin film forming apparatus includes: a solution spray unit for spraying a solution on a substrate; and a hot gas spray unit for spraying a hot gas onto fine liquid droplets that have been sprayed from the solution spray unit and that are in flight, to thereby evaporate a solvent contained in the fine liquid droplets.