Abstract:
It is disclosed that titania nanoparticles adequate for fabricating a photo-electrode of a dye-sensitized solar cell which is efficient and longlasting and a fabrication method thereof. The titania nanoparticles can provide high photoelectric conversion efficiency of the solar cell with help of fast electron mobility due to its high crystallinity and can reduce process time required for adsorbing the dye molecules on the surface of the titania nanoparticles. By modifying surface characteristics of the titania nanoparticles, it is allowed for dye molecules to be easily adsorbed on the surface of the titania nanoparticles and the life span of the dye molecules adsorbed on it is expanded with help of reduced photo-degradation rate of them at service conditions.
Abstract:
The present invention relates to a method of treating spherical oxide particles comprising subjecting the spherical oxide particles to heat treatment above room temperature. Spherical oxide particles synthesized by a sol-gel method, specifically silica particles, are heat treated to minimize defects occurring during particle alignment, thereby eventually enhancing the volume stability of the silica particles. Since a silica layer with less structural defects fabricated according to the present invention has high physical stability and provides high crystallinity over a large area, it can be used in fields that require photonic crystals having superior optical properties, such as light refractive layers, waveguides, etc.
Abstract:
Provided are a saturated N-heterocyclic carbene-ligand metal complex derivative, a method for preparing the same, and a method for preparing a silane compound by hydrosilylation using the same as a catalyst. To describe in more detail, the metal complex derivative has a saturated N-heterocyclic carbene derivative and an olefin ligand at the same time. A silane compound is prepared by hydrosilylation in the presence of the metal complex derivative as a catalyst. The provided metal complex derivative of the present invention has superior stability during hydrosilylation reaction and is capable of effectively performing the hydrosilylation reaction at low temperature even with small quantity. Further, a product with superior regioselectivity may be obtained. In addition, after the hydrosilylation reaction is completed, the metal complex derivative may be recovered and recycled.
Abstract:
The present invention relates to novel imidazole derivatives or pharmaceutically acceptable salts thereof, preparation methods thereof and pharmaceutical compositions for prevention and treatment of melanoma containing the same as active ingredients. The novel imidazole derivatives or pharmaceutically acceptable salts thereof according to the present invention have excellent inhibitory effects on various protein kinases, which cause melanoma, such as B-RAF, C-RAF, Aurora-A, BTK, Flt3, Ret, KDR/VEGFR2, P38α/MAPK14, RAF1, FMS, and the like, so they can be used for the prevention and treatment of melanoma.
Abstract:
Disclosed are novel indazole derivatives represented by the following Chemical Formula 1 or pharmaceutically acceptable salts, hydrates or solvates thereof, and pharmaceutical compositions for the prevention or treatment of proliferative diseases, containing the same as an active ingredient. Having potent inhibitory effect against protein kinase, such as b-raf, KDR, Fms, Tie2, SAPK2a and Ret, inducing diseases caused by abnormal cell proliferation, the novel indazole derivatives can be used for the prevention or treatment of diseases caused by abnormal cell proliferation.
Abstract:
A microactuator includes a substrate whose one end is fixed; a phase change film which is deposited on the substrate and has a high phase change rate, high strain and high stress during phase change; a protective film deposited on the phase change film; and a current pulse supply unit for supplying thermal energy to induce the phase transition of the phase change film, wherein the other end of the substrate is moved due to changes of the volume and residual stress of the phase change film accompanied by the phase transition thereof. The phase change film is made of a chalcogenide phase change material.
Abstract:
Provided is a protein detection system using a micro-cantilever and based on immune responses, wherein the micro-cantilever shows significantly improved sensitivity to allow detection of a trace amount of biomolecule. To the micro-cantilever, sandwich immunoassay is applied, and the sandwich immunoassay uses a polyclonal antibody or silica nanoparticles having a monoclonal antibody bound thereto, so that variations in the output signals of the cantilever are amplified and the detection sensitivity is significantly improved. The system enables detection of disease specific antigen at several femtomolar levels, and makes it possible to detect a trace amount of protein related to diseases, particularly to cancers, with ease.
Abstract:
Disclosed is an optical recognition user input device and method for recognizing user input that can prevent an error in recognition of plural touch points. A plurality of optical transmission/reception modules (T/R) are disposed around a touch panel including a plurality of pixels. Each of the optical T/R modules includes a light emitting unit and a light receiving unit. A controller controls operation of the optical T/R modules and calculates a user touch location on the touch panel based on an optical signal received by the light receiving unit.
Abstract:
Novel oxazolidinone derivatives with a difluorophenyl moiety, represented by Chemical Formula 1, pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition comprising the same as an active ingredient are provided. Exhibiting potent inhibitory activity against Gram-positive bacteria including Haemophilus influenza and Coagulase negative staphylococci and resistant bacteria including vancomycin-resistant en- terococci (VRE), the pharmaceutical composition is useful as an antibiotic.
Abstract:
There are provided an anode for a secondary battery having a negative active material with a multi-component metal oxide nanofiber web structure in which a cycle characteristic and a life characteristic are improved and stability is improved when charging and discharging are performed by a large current, a secondary battery using the same, and a method of fabricating a negative active material for a secondary battery. The method of fabricating the negative active material for a secondary battery includes spinning a solution in which no less than two kinds of metal-salt precursors and a polymer are mixed with each other onto an anode colector to form a web of composite fiber in which the no less than two kinds of metal-salt precursors and the polymer are mixed with each other, performing a thermal compression or thermal pressure process on the web of the composite fiber, and performing thermal treatment on the thermal compressed or thermal pressed web of the composite fiber to remove the polymer from the web of the composite filder.