Patent application number | Description | Published |
20090169889 | NANOSIZED PHOSPHOR - The present invention is to provide a nanosized phosphor exhibiting enhanced luminance as a molecular labeling phosphor by controlling an electrostatic charge of an inorganic phosphor. The nanosized phosphor is featured in that at least 90% of total particles have a particle size of 1 to 100 nm and an electrostatic charge of the total particles is in the range of −20 μC/g to 5 μC/g. | 07-02-2009 |
20090236563 | Nanosized Semiconductor Particle Having Core/Shell Structure and Manufacturing Method Thereof - An objective is to provide a nanosized semiconductor particle having a core/shell structure in which a ratio of shell thickness/core portion particle diameter exhibits an optimal ratio in optical properties of optical elements. The particle comprising the structure in which shell portion has a thickness of not more than 1/2 of core portion particle diameter, wherein core portion has a particle diameter of less than 20 nm, and shell portion has a thickness of at least 0.2 nm; core portion has a particle diameter of 20-100 nm, and shell portion has a thickness of at least 1/100 of a core portion particle diameter; core portion possesses at least one element of B, C, N, Al, Si, P, S, Zn, Ga, Ge, As, Se, Cd, In, Sb and Te; and shell portion has a composition exhibiting a larger band gap than that of core portion. | 09-24-2009 |
20090263659 | SEMICONDUCTOR NANOPARTICLE AND METHOD OF PRODUCING THE SAME - Disclosed is a method to produce a semiconductor nanoparticle which is excellent in monodispersibility and productivity. This method is characterized in that two or more kinds of semiconductor nanoparticles having different average particle diameters are dispersed in a solvent and mixed together, and then subjected to size classification. | 10-22-2009 |
20090280520 | FLUORESCENT SEMICONDUCTOR PARTICLES, METHOD OF MANUFACTURING THE SAME, BIOSUBSTANCE FLUORESCENT LABELING AGENT EMPLOYING THE SAME, AND BIOIMAGING METHOD THEREOF - Disclosed is a fluorescent semiconductor particle having a core/shell structure composed of a core particle as a semiconductor particle, and a shell layer by which the core particle is covered, wherein the core particle has a different chemical composition from that of the shell layer; the core particle has an average particle diameter of 1-15 nm and a specific gravity of 1.0-3.0; and the fluorescent semiconductor particle having the core/shell structure has a specific gravity of 0.8-3.2 | 11-12-2009 |
20090325814 | BIOMOLECULE DETECTION REAGENT AND METHOD FOR DETECTING BIOMOLECULE USING THE SAME - A biomolecule detection reagent comprising a semiconductor nanoparticle aggregate, wherein each semiconductor nanoparticle, constituting the semiconductor nanoparticle aggregate, has detection molecules binding specifically with biomolecules on its surface, and a standard deviation of numbers of the detection molecules existing on each semiconductor nanoparticle, is 5% or less. | 12-31-2009 |
20100044673 | LABELING FLUORESCENT COMPOUND - A labeling fluorescent compound which enables highly stable detection in vital labeling and has high sensitivity. The labeling fluorescent compound is characterized by being composed of inorganic fluorescent nanoparticles which have a surface modification compound disposed on the surface thereof and have an average particle diameter of 1.0-20 nm. It is further characterized in that the proportion of the length of the surface modification compound as measured from the surface of the inorganic fluorescent nanoparticles to the particle diameter of the inorganic fluorescent nanoparticles is from 0.10 to 0.50, and that the proportion of the specific gravity of the inorganic fluorescent nanoparticles having the surface modification compound fixed thereto to the specific gravity of the inorganic fluorescent nanoparticles not having the surface modification compound is from 0.80 to 0.40. | 02-25-2010 |
20100096599 | CORE/SHELL TYPE SEMICONDUCTOR NANOPARTICLE AND METHOD FOR PRODUCTION THEREOF - Disclosed are core/shell type semiconductor nanoparticles exhibiting a sufficient emission intensity without causing a blink phenomenon (blinking). The core/shell-type semiconductor nanoparticles have an average particle size of from 2 to 50 nm and comprise an intermediate layer between a core portion and a shell portion, wherein band gap widths of bulk crystals which have the same compositions as those of the core portion, the intermediate portion and the shell portion, respectively, are in the order of:
| 04-22-2010 |
20100210030 | ASSEMBLY OF SEMICONDUCTOR NANOPARTICLE PHOSPHORS, PREPARATION METHOD OF THE SAME AND SINGLE-MOLECULE OBSERVATION METHOD USING THE SAME - Disclosed are an assembly of semiconductor nanoparticle phosphors, which can provide stable evaluation without variation in emission wavelength or in intensity of emission among the particles when used as a labeling agent through which a single-molecule observation is carried out, a preparation method of the assembly, and a single-molecule observation method employing the assembly. Also disclosed is a method for preparing an assembly of semiconductor nanoparticle phosphors according to a liquid phase method, the method comprising the step of reacting a semiconductor precursor at a temperature which is not lower than the melting point of the semiconductor precursor and is not higher than the boiling point of a solvent. | 08-19-2010 |
20100248386 | SEMICONDUCTOR PHOSPHOR NANOPARTICLE ASSEMBLY, PRODUCING METHOD THEREOF AND SINGLE MOLECULE OBSERVATION METHOD BY USE THEREOF - The present invention provide a semiconductor phosphor nanoparticle assembly which exhibits no variation in emission wavelength and emission intensity for every particle and is capable of achieving stable evaluation when performing a single molecule observation by using an assembly of semiconductor phosphor nanoparticles as a fluorescence labeling agent, a production method thereof and a single molecule observation method by use thereof. The production method of the semiconductor phosphor nanoparticle assembly, which is performed by a liquid phase process or a gas phase process, comprises the steps of forming nuclear particles and allowing the nuclear particles to grow or fuse, wherein a concentration by number of the formed nuclear particles is not more than a specific concentration. | 09-30-2010 |
20100304288 | ELECTROPHOGRAPHIC TONER - A toner comprising toner particles, wherein a surface-treated titanate compound is contained on the surface of parent toner particles comprising a resin and a colorant, and the titanate compound having a carbon amount of not less than 0.15% by mass and not more than 0.50% by mass. | 12-02-2010 |
20110020241 | FLUORESCENT LABELING AGENT CONTAINING QUANTUM DOTS - Disclosed is a fluorescent labeling agent containing quantum dots, which exhibits little fluctuation in luminous properties in accordance with the environment where the fluorescent labeling agent is stored and therefore has high environmental stability, and which has high luminous intensity. Specifically disclosed is a fluorescent labeling agent containing quantum dots, which comprises: (1) a fluorescent labeling agent core part which comprises at least three quantum dots per a fluorescent labeling agent and a protective material; and (2) an organic surface-coating layer which coats the fluorescent labeling agent core part, wherein the fluorescent labeling agent core part has an average particle diameter of 10 to 50 nm. | 01-27-2011 |
20110236652 | IMAGE PRINT AND IMAGE FORMING METHOD - Disclosed is an image print which has a toner-holding layer on an image-supporting substrate in which the toner-holding layer holds a toner image formed by toner particles, wherein the toner-holding layer is composed of a hydrogel having a water content of 10% by mass or more and not more than 90% by mass. | 09-29-2011 |
20110254260 | IMAGE PRINTED MATTER AND IMAGE FORMING METHOD - An image forming method for forming an image printed matter, includes the steps of: forming a toner image with toner particles on a photoreceptor; transferring the toner image from the photoreceptor onto a substrate; laminating an toner holding material layer on the substrate so as to embed the toner image in the toner holding material layer so that the toner holding material layer holds the toner image therein and the image printed matter is formed, wherein the toner holding material layer is composed of a gel including a liquid dispersion medium having a contact angle of 20 to 110 degrees to the image supporting substrate. | 10-20-2011 |