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Nanoparticle patents

Laura HorcajadaLaura Horcajada

Magnetic nanoparticle compositions and methods of use thereof

The present invention relates to diagnosis and treatment of medical conditions using magnetic nanoparticle compositions.

Publication number: US2013006092A1 | Search similar patents

Colloidal system of ceramic nanoparticles

A colloidal system of ceramic nanoparticles in a dispersion medium is characterized in that the nanoparticles dispersed in the dispersion medium are distributed by 90% or more portions as unimodal nanoparticles having the same particle size in the dispersion medium, wherein the particle size variation decreases from 50%, related to nanoparticles of 1 nm, to 10% for nanoparticles of 100 nm, and the atoms and/or ions located in the surface of the nanoparticles are saturated in terms of valence in dependence on the concentration of the nanoparticles in the dispersion medium using a surface modificator such that an energetic balance of the nanoparticles in the dispersion medium is obtained. The presented colloidal system is characterized by a great stability and keeps the unimodal/monomodal nanoparticles homogeneously distributed and suspended in the dispersion medium.

Publication number: EP1534651A1 | Search similar patents

Method for the production of nanoparticles

The present invention relates to methods for the production of nanoparticles which may be optionally coated. In particular, the present invention relates to methods for the production of nanoparticles characterized in that precursors are subjected to substantially the same amount of activation energy in the activation zone at a predetermined concentration of precursors and at a predetermined time of exposure to the activation energy. Furthermore, the present invention relates to nanoparticles produced by the methods according to the present invention. Finally, the present invention concerns a device for producing nanoparticles according to the method of the present invention. The activation energy is selected from the group of RF plasma, MW plasma, IR plasma, thermal plasma, heat, photon absorption, plasma by electric discharge or radioactive radiation or sonar energy.

Publication number: EP1867386A1 | Search similar patents

Method for synthesizing metal oxide

The method for synthesizing metal oxide nanopowder produces powders of nanoparticle size from metals having relatively low boiling temperatures, such as zinc, tellurium, bismuth, and strontium by vapor-phase oxidation using a conventional 2.45 GHz microwave oven. The energy that initiates the combustion comes from the microwave through a susceptor tube that absorbs radiant microwave energy and transfers it to the metal, which evaporates to small particles inside the susceptor tube and then combusts in air to form nanosize powder. The susceptor is made of silicon carbide composite material.

Publication number: US7601324B1 | Search similar patents

Pressure controlled droplet spraying (pcds) method for forming particles of compound materials from melts

A method and apparatus of forming compositionally homogeneous particles is provided. The method includes forming a homogenous melt from a plurality of constituent materials under a first pressure sufficient to prevent substantial vaporization of the constituent materials. Droplets are generated from the homogenous melt. The droplets are cooled under a second pressure sufficient to prevent substantial vaporization of the constituent materials at least until the homogeneous particles formed therefrom have stabilized.

Publication number: EP2346780A2 | Search similar patents

Nano-dispersed powders and methods for their manufacture

Dispersed powders are disclosed that comprise fine nanoscale powders dispersed on coarser carrier powders. The composition of the dispersed fine powders may be oxides, carbides, nitrides, borides, chalcogenides, metals, and alloys. Fine powders discussed are of sizes less than 100 microns, preferably less than 10 micron, more preferably less than 1 micron, and most preferably less than 100 nanometers. Methods for producing such powders in high volume, low-cost, and reproducible quality are also outlined. Such powders are useful in various applications such as catalysts, sensor, electronic, electrical, photonic, thermal, biomedical, piezo, magnetic, catalytic and electrochemical products.

Publication number: US2003102099A1 | Search similar patents

Methods of fabricating surface enhanced raman scattering substrates

A method of fabricating a surface enhanced Raman scattering (SERS) substrate. In one embodiment, the method has the steps of simultaneously evaporating a metal at a first evaporation rate and a polymer at a second evaporation rate different from the first evaporation rate, to form a nanocomposite of the metal and the polymer, depositing the nanocomposite onto a substrate, and applying an etching process to the deposited nanocomposite on the substrate to remove the polymer material, thereby forming an SERS substrate.

Publication number: US2010149529A1 | Search similar patents

Tungsten comprising nanomaterials and related nanotechnology

Nanoparticles comprising tungsten, methods of manufacturing nanoparticles comprising tungsten, and applications of nanoparticles comprising tungsten, such as electronics, optical devices, photonics, reagents for fine chemical synthesis, pigments, and catalysts are provided.

Publication number: EP1888465A2 | Search similar patents

Optical coating

Optical coating materials comprise a transparent matrix material having dispersed nanoparticles comprising between 1 and 20 volume percent of the optical coating material. The coating materials are used to form optical coatings on substrates, such as glass/ceramic, polymer or metal, to alter the color or other optical properties. The nanoparticles are semiconductive material or elemental metals or elemental metal alloys that exhibit surface plasmon resonance.

Publication number: WO2008024342A2 | Search similar patents

A composition and method for making a proppant

The present invention relates to proppants which can be used to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more proppants of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the proppants of the present invention are further disclosed, as well as methods of making the proppants.

Publication number: EP2047061A2 | Search similar patents

Dispersion comprising silver containing nanoparticles and method processing surfaces

Dispersion contains a liquid with dispersed silver-containing nano-particles. An independent claim is also included for a method for treating surfaces by applying the above dispersion.

Publication number: EP1932890A2 | Search similar patents

Method of producing fine-particle multicomponent glass powders for use

The invention is directed to a method for producing low sintering fine-particle multicomponent glass powder having a particle size of the primary particle in the nanometer range. The method utilizes microemulsion techniques with subsequent separation of the particles out of the emulsion and calcination for utilization as glass flow having a sintering temperature <900.degree. C. or in a glass flow, for generating thin transparent layers or for generating color decorations on glass, glass ceramic or ceramic substrates after adding a coloring pigment to the glass flow. The microemulsion for producing the nanoscale glass powder particles is generated from a nonionic ambiphilic emulsifier with a component of 10 to 15 percent by weight on the emulsion, from an oil phase having a portion of 50 to 70 percent by weight and a glass precursor-containing aqueous salt solution having a portion of up to 31.3 percent by weight with salt contents of up to 45 percent by weight.

Publication number: US5837025A | Search similar patents

Composition and method for making a proppant

The present invention relates to proppants which can be used to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more proppants of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the proppants of the present invention are further disclosed, as well as methods of making the proppants.

Publication number: US2008135245A1 | Search similar patents

Multi-layer-coated quantum dot beads

Disclosed herein are coated beads made of a primary matrix material and containing a population of quantum dot nanoparticles. Each bead has a multi-layer surface coating. The layers can be two or more distinct surface coating materials. The surface coating materials may be inorganic materials and/or polymeric materials. A method of preparing such particles is also described. The coated beads are useful for composite materials for applications such as light-emitting devices.

Publication number: WO2014140936A2 | Search similar patents

Nanoparticles prepared using carbon nanotube and preparation method therefor

Disclosed are a method for preparing a nanoparticle by using a carbon nanotube, and the nanoparticle prepared by the method. In the disclosed method, by using a carbon nanotube having a physically solid structure and a chemically solid bond, a powder particle made of metal, polymer, ceramic or the like is milled to a nano-size. Also, the nanoparticle prepared by the method has a small size and includes the carbon nanotube. Thus, when the method is applied to a highly oxidative metal, the nanoparticle can be applied to related fields requiring ignitability such as solid fuel, gunpowder, and the like. Also, the carbon nanotube has good mechanical properties and electrical conductivity, and thus can be applied to the related products.

Publication number: EP2394952A2 | Search similar patents

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