摘要:
An object of the present invention is to reduce the incompleteness of the surface state due to lattice constant and steric hindrance, which was heretofore nearly unavoidable, in the surface treatment of light-emitting semiconductor nanoparticles. The present invention provides an excellent luminescent material that has enhanced photoluminescence efficiency, reduced photoluminescence spectrum width, and increased chemical resistance. Specifically, the present invention provides a luminescent material comprising semiconductor nanoparticles having a mean particle size of 2 to 12 nm and a band gap of 3.8 eV or less, each of the semiconductor nanoparticles being coated with a silicon-containing layer, the semiconductor nanoparticles in the luminescent material having a peak emission wavelength 20 nm or more towards the longer-wavelength side than the peak emission wavelength of the semiconductor nanoparticles alone.
摘要:
In a reactor vessel thermal load reducing system near the surface level of a coolant, the present invention is characterized in that a heat conductive member is installed not contacting the reactor vessel wall in an area above and below the coolant liquid surface, and the heat conducting member is attached to a guard vessel, the heat conducting member being made of material of good heat conductivity.
摘要:
The information processing device includes a plurality of integrated circuits that are interconnected via an external bus. Each of the integrated circuits is structured to be connectable via an internal bus to a CPU, a user logic, and a bridge. One integrated circuit is set as a master integrated circuit, which controls other integrated circuits, and the other integrated circuits are set as slave integrated circuits. CPUs of the slave integrated circuits are set in a reset state. Only the CPU of the master integrated circuit can be boot and it controls the user logic of the slave integrated circuit via the bridge of the slave integrated circuit and the external bus.
摘要:
A device suitable for hanging a jacket and trousers is disclosed, which includes a main frame having an upper portion shaped to fit inside the jacket from shoulder to shoulder and a lower portion vertically spaced apart from the upper portion, a subframe having an upper part disposed between the upper and lower portions of the main frame and a lower part adapted for hanging the trousers, and a hook member having an end portion fixedly secured to the upper part of the subframe and a vertical extending portion slidably inserted through a through hole of the main frame, so that the subframe is movable relative to the main frame between a lower position where there is formed a space between the lower portion of the main frame and the lower part of the subframe to permit the trousers to be inserted therethrough and an upper position where the lower part of the subframe is engaged by the lower portion of the main frame to nip the trousers hung on the lower part of the subframe therebetween.
摘要:
An object of the present invention is to prepare a fine particle with high durability and high brightness, in which semiconductor nanoparticles are assembled. The present invention provides fluorescent fine particles comprising Cd- and Se-containing semiconductor nanoparticles dispersed in silicon-containing fine particles, wherein the average particle size of the silicon-containing fine particles is 20 to 100 nm, and the number of semiconductor nanoparticles dispersed in the silicon-containing fine particles is 10 or more.
摘要:
The present invention provides a luminescent fiber, which retains a certain shape with assembled nanoparticles, and a method for producing the luminescent fiber. Specifically, the present invention provides a luminescent fiber comprising silicon and semiconductor nanoparticles having a mean particle size of 2 to 12 nm, the luminescent fiber having a diameter of 20 nm to 2 μm, a length of 40 nm to 500 μm, an aspect ratio of 2 to 1,000, and photoluminescence efficiency of not less than 5%.
摘要:
The present invention provides semiconductor-nanoparticle-dispersed small silica glass particles that emit bright fluorescent light with high fluorescence quantum yield and high density, compared to the conventional semiconductor-nanoparticle-dispersed small glass particles, and that have excellent fluorescence intensity stability over time; and a process for preparing the same. The semiconductor-nanoparticle-dispersed silica glass particles have a mean particle size of not less than 10 nanometers and not more than 5 micrometers, and contain a hydrolyzed alkoxide and semiconductor nanoparticles at a concentration of not less than 2×10−5 mol/l and not more than 1×10−2 mol/l. The particles emit fluorescent light with a fluorescence quantum yield (quantum yield) of 25% or more (and 60% or more), when dispersed in a solution.
摘要:
Quality of an image inputted from a video input terminal is adjusted at an image processing unit using a parameter set fitted for the image selected from a plurality of parameter sets received in a parameter set receiving unit. The using parameter set is stored in a parameter memory. A scene judging unit generates a hue histogram of each frame. When a change of the parameter set is necessary, a parameter mixing unit gradually replaces values of the parameter set stored in the parameter memory with a new parameter set selected by a selector. The replaced parameter set is stored in the parameter memory and is used in the image processing unit for adjusting the image quality.
摘要:
This invention provides a novel phosphor material that has better brightness than conventional phosphors using dispersed rare earth ions, and that possesses excellent light resistance, temporal stability, and the like, and a light-emitting device with high brightness comprising such phosphor material and an excitation ultraviolet light source corresponding to the properties thereof. A phosphor comprising a silicon-containing solid matrix and semiconductor superfine particles dispersed therein at a concentration of 5×10−4 to 1×10−2 mol/L, said semiconductor superfine particles having a fluorescence quantum yield of 3% or greater and a diameter of 1.5 to 5 nm, and a light-emitting device including said phosphor and a light source for excitation light with an intensity of 3 to 800 W/cm2.
摘要:
A humidity detection material includes oxide of at least one metal selected from the group consisting of Mg, Ca, Mn, Fe, Co, Ni, and Cu. The metal oxide is preferably in the form of a porous material. The metal oxide is formed preferably in the form of a thin film on a transparent substrate. The humidity detection material is contacted with water vapor in the presence of a gas such as air, and the optical absorbance of the humidity detection material is measured to detect the humidity. The humidity can be detected by an optical method.