Abstract: Embodiments of the present invention are directed to novel methods for the solution-based production of silver nanowires by adaptation of the polyol process. Some embodiments of the present invention can be practiced at lower temperature and/or at higher concentration than previously described methods. In some embodiments reactants are added in solid form rather than in solution. In some embodiments, an acid compound is added to the reaction.

Abstract: A process for producing nanoparticles comprises the steps of preparing silver seeds in the presence of a water soluble polyanionic polymer and growing the silver seeds to form nanoparticles. The polyanionic polymer may be poly(sodium styrenesulphonate).

Abstract: Disclosed are water-soluble nanoparticles. The water-soluble nanoparticles are each surrounded by a multifunctional group ligand including an adhesive region, a cross linking region, and a reactive region. In the water-soluble nanoparticles, the cross-linking region of the multifunctional group ligand is cross-linked with another cross-linking region of a neighboring multifunctional group ligand.

Abstract: A method for forming an electronic device on a flexible substrate conditions a surface of the flexible substrate to increase its malleability and to provide a conditioned substrate surface. A master surface is impressed against the conditioned substrate surface. The master surface is then released from the conditioned substrate surface, thereby forming a circuit-side surface on the substrate. The electronic device is then formed on the circuit-side surface. The substrate may be supported on a carrier during the method.

Abstract: Methods for the synthesis of metal quantum clusters within the framework of a porous gel matrix are described. For example, Ag25(glutathione)18 quantum clusters are synthesized in a cross-linked polyacrylamide gel matrix. The methods can be performed on large-scale and yields monodispersed metal quantum clusters.

Abstract: Provided are a coenzyme Q10 nanoparticle, a method of preparing the same and a composition having the nanoparticle. According to the present invention, Coenzyme Q10 may be dissolved in only a water-miscible organic solvent, and easily made into a nano-sized particle and solubilized under a low energy condition, for example, by simple stirring. The coenzyme Q10 may be dispersion-stabilized by an amino acid or protein. The coenzyme Q10 is formed in a nano-sized particle and solubilized, an absorption rate may be increased and simultaneously deliver the amino acid and protein with the nanoparticle. Thus, the coenzyme Q10 nanoparticle can be effectively used in food, cosmetics and medicine.

Abstract: Copper-containing nanoparticles with excellent oxidation resistance is provided. The present invention relates to a method for manufacturing copper-containing nanoparticles including obtaining copper-containing nanoparticles that contain an organic component by heat treating an organic copper compound at a temperature equal to or higher than a decomposition initiation temperature of the compound and lower than a complete decomposition temperature of the compound in a non-oxidative atmosphere in the presence of an organic material containing a 1,2-alkanediol having 5 or more carbon atoms and/or a derivative thereof.

Abstract: The invention provides a surface-modified zirconia nanocrystal particle, wherein the surface of the zirconia nanoparticle is modified by organic sulfonyloxy groups, and a method of producing a zirconia nanocrystal particle whose surface is modified by carbonyloxy groups, organic phosphoryloxy groups or aryloxy groups. This makes it possible a highly stable surface-modified zirconia nanocrystal particle having a solvent dispersibility by a simple method. Further, it is possible to the surface-modified zirconia nanocrystal particle of the invention is equipped with a surface modifier having a structure that can be easily substituted with a desired functional group according to use. Furthermore, it is possible to the method of producing the surface-modified zirconia nanocrystal particle which is capable of easily producing that.

Abstract: The invention relates to a material composed of nanoparticles essentially comprising a spin transition compound. The compound corresponds to the formula [ ( Fe 1 - y ? M y ? L 3 ) w ? L 3 ] [ X 2 x ? ( 1 - z x ? ) ? Y 2 ? ? z x ? ] w in which L represents a 1,2,4-triazole ligand carrying an R substituent on the nitrogen in the 4 position; X is an anion having the valency x, 1?x?2; Y is an anion other than X having the valency x?, 1?x??2; R is an alkyl group or an R1R2N— group in which R1 and R2 represent, each independently of the other, H or an alkyl radical; M is a metal having a 3d4, 3d5, 3d6 or 3d7 configuration, other than Fe; 0?y?1; 0?z?2; 3?w?1500. Applications: thermochromic pigment, data storage, optical limiters, contrast agent.

Abstract: The invention relates to the field of pharmaceutics and medicine and concerns a nano-diamond conjugate with glycine for delivering glycine into an organism, the conjugate comprising nano-diamond particles modified by glycine, with a particle size of 2-10 nm, and containing up to 21% by mass of glycine which is included in the composition of the superficial shell of said particles with a thickness of up to 1 nm, and to a method for producing said conjugate

Abstract: The present invention is directed to compositions comprising free standing and stacked assemblies of two dimensional crystalline solids, and methods of making the same.

Abstract: A method for producing aqueous compatible semiconductor nanoparticles includes binding pre-modified ligands to nanoparticles without the need for further post-binding modification to render the nanoparticles aqueous compatible. Nanoparticles modified in this way may exhibit enhanced fluorescence and stability compared to aqueous compatible nanoparticles produced by methods requiring post-binding modification processes.

Abstract: A bioprobe based on surface-modified single-phase BaGdF5:Yb/Er upconversion nanoparticles (UCNPs) for multi-modal bioimaging of fluorescent, magnetic resonance imaging (MRI) and computed X-ray tomography (CT) is disclosed herein. The modified UCNPs of the present invention are synthesized by a facile one-pot hydrothermal method with simultaneous surface modification of the nanoparticles. The surface-modified UCNPs of the present invention are useful in a variety of biomedical application fields due to their advantages in in vitro and in vivo multi-modal bioimaging such as small particle size up to 15 nm, substantially free of autofluorescence, low cytotoxicity, capable of being excited at near-infrared (NIR) wavelength, ability to deep cell penetration, long-lasting signal and long circulation time in vivo, different X-ray absorption coefficients at different photon energy levels between Ba and Gd, large magnetic moment, etc.

Abstract: The present invention relates to screen-printable quaternary chalcogenide compositions. The present invention also provides a process for creating an essentially pure crystalline layer of the quaternary chalcogenide on a substrate. Such coated substrates contain p-type semiconductors and are useful as the absorber layer in a solar cell.

Abstract: A process for synthesizing metal submicron and nano-scale powders for use in articles of manufacture. In a suitable reactor, single metal or multiple metal complexes are heated to a temperature whereby, upon contact with hydrogen gas, an exothermic reaction begins. The further temperature rise in response to the exothermic reaction is minimized by reducing the external heat input, thereby minimizing the agglomeration or sintering of the metal nano-scale particles resulting from the process. Preferably, after drawing a vacuum on the metal complexes in the reactor, the hydrogen is introduced at about, equal to or below ambient pressure and the reaction is purposely made slow to prevent agglomeration or sintering.

Abstract: The present invention relates to formation of nanocubes of sillenite type compounds, such as bismuth titanate, i.e., Bi12TiO20, nanocubes, via a hydrothermal synthesis process, with the resulting compound(s) having multifunctional properties such as being useful in solar energy conversion, environmental remediation, and/or energy storage, for example. In one embodiment, a hydrothermal method is disclosed that transforms nanoparticles of TiO2 to bismuth titanate, i.e., Bi12TiO20, nanocubes, optionally loaded with palladium nanoparticles. The method includes reacting titanium dioxide nanotubes with a bismuth salt in an acidic bath at a temperature sufficient and for a time sufficient to form bismuth titanate crystals, which are subsequently annealed to form bismuth titanate nanocubes. After annealing, the bismuth titanate nanocubes may be optionally loaded with nano-sized metal particles, e.g., nanosized palladium particles.

Abstract: The invention relates to compounds of formula (I) wherein the groups A and B represent independently from each other —CH?CH—, or —C?C—, the terms t, u, v, w represent, independently from each other, values ranging from 0 to 9, the groups Y1 and Y2 can represent independently from each other an alkyl group (linear, branched or substituted) carrying from 1 to 9 carbon atoms, the groups Z1, Z2, Z3, and Z4 can represent independently from each other a chemically reactive group W, such as OH, NH2, SH, the groups Z5 and Z6 represent independently from each other a hydrogen atom, silica nanoparticles functionalized by these compounds, and their use as drugs.

Abstract: The invention discloses a preparation method of nano-scale platinum (Pt) using an open-loop reduction system. The preparation method comprises the steps of: utilizing carbon nanotubes (CNTs) as a catalyst support; mixing platinum salt with a reducing agent and deionized water to form a precursor solution in a flask; heating the precursor solution in the flask at a predetermined temperature range to reduce nano-scale platinum nanoparticles on the carbon nanotubes by the process of water evaporation; allowing the water vapor to flow through a connection tube to a condenser; filling a cooling substance into the condenser via the first opening and draining the cooling substance from the condenser via the second opening to lower the temperature of the water vapor in the inner tube by the cooling substance and condense the water vapor into liquid water, which is collected with a beaker placed under the condenser.

Abstract: The present invention relates to crystalline cerium oxide prepared in a simple, economical, and efficient manner, of which crystal structure, shape, and size can be easily adjusted and that exhibits excellent polishing properties, and a preparation method thereof. The crystalline cerium oxide can be prepared as sub-micron crystalline cerium oxide that has a mean volume diameter and a diameter standard deviation within a predetermined range.

Abstract: Disclosed is a method for providing nanoporous palladium and platinum powders. These materials were synthesized on milligram to gram scales by chemical reduction of tetrahalo-complexes with ascorbate in a concentrated aqueous surfactant at temperatures between ?20° C. and 30° C. The prepared particles have diameters of approximately 50 nm, wherein each particle is perforated by pores having diameters of approximately 3 nm, as determined by electron tomography. These materials are of potential value for hydrogen and electrical charge storage applications.

Abstract: A method for fabricating graphene sheets or graphene particles includes (a) dispersing graphene oxide in an alcohol solution to prepare a graphene oxide dispersion solution, (b) reducing the graphene oxide dispersion solution under a supercritical condition to prepare graphene sheets or graphene particles, each of which is as a cluster of the graphene sheets, and (c) separating the graphene sheets or graphene particles, followed by washing and drying, and a method for fabricating a graphene film is configured to fabricate a graphene film in form of a thin film using the graphene sheets or graphene particles fabricated according to the method.

Abstract: A nanofibrous catalyst and method of manufacture. A precursor solution of a transition metal based material is formed into a plurality of interconnected nanofibers by electro-spinning the precursor solution with the nanofibers converted to a catalytically active material by a heat treatment. Selected subsequent treatments can enhance catalytic activity.

Abstract: The present disclosure relates to solution processed nanomaterials, and methods for their manufacture, with activity in the infrared (IR) region for a variety of commercial and defense applications, including conformal large-area IR coatings, devices and pigments that necessitate an absorption band edge in the MWIR or LWIR.

Abstract: A method for preparing nanoscale hydroxyapatite particles by combining an amount of a calcium ion source, which includes calcium acetate, and an amount of a phosphate ion source, wherein the amounts are sufficient to produce nanoscale hydroxyapatite particles and the amounts are combined under ambient conditions to produce the hydroxyapatite particles. Nanoscale hydroxyapatite particles are also presented.

Abstract: Disclosed herein is a sequential functionalization methodology for the covalent modification of nanotubes with between one and four repeat units of a polymer. Covalent attachment of oligomer units to the surface of nanotubes results in oligomer units forming an organic sheath around the nanotubes, polymer-functionalized-nanotubes (P-NTs). P-NTs possess chemical functionality identical to that of the functionalizing polymer, and thus provide nanoscale scaffolds which may be readily dispersed within a monomer solution and participate in the polymerization reaction to form a polymer-nanotube/polymer composite. Formation of polymer in the presence of P-NTs leads to a uniform dispersion of nanotubes within the polymer matrix, in contrast to aggregated masses of nanotubes in the case of pristine-NTs.

Abstract: The present invention relates to Eu (II) compound nanocrystals doped with transition metal ions. Such a constitution generates quantum size effects of an Eu (II) compound nanoparticle, while the transition metal ions can affect a magnetooptical property of the Eu (II) compound nanoparticle. Thus, the magnetooptical property can be improved.

Abstract: A nano-particle comprising: an interior region comprising a mixed-metal oxide; and an exterior surface comprising a pure metal. In some embodiments, the mixed-metal oxide comprises aluminum oxide and a metallic pinning agent, such as palladium, copper, molybdenum, or cobalt. In some embodiments, the pure metal at the exterior surface is the same as the metallic pinning agent in the mixed-metal oxide in the interior region. In some embodiments, a catalytic nano-particle is bonded to the pure metal at the exterior surface. In some embodiments, the interior region and the exterior surface are formed using a plasma gun. In some embodiments, the interior region and the exterior surface are formed using a wet chemistry process. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a plasma gun. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a wet chemistry process.

Abstract: Magnetic ion-exchange polymer microspheres and a method for preparing the same are provided. The method for preparing the magnetic ion-exchange polymer microspheres includes swelling the ion-exchange resins and allowing the magnetic nano-particles to enter the interior of the ion-exchange resins. The magnetic ion-exchange resins of the present invention have various functional groups can be introduced onto the surfaces thereof. Therefore, the magnetic ion-exchange resins of the present invention can be applied in many areas, and thereby they have high economic value.

Abstract: A dye-sensitized solar cell includes a negative electrode, a positive electrode, a photoelectrode mounted between the negative electrode and the positive electrode, and an electrolyte located between the photoelectrode and the positive electrode. The photoelectrode is adapted to absorb a dye. The photoelectrode includes a dense layer, a scattering layer and a carrier transport layer. The dense layer, the scattering layer and the carrier transport layer are stacked one upon another. The dense layer is formed by titanium dioxide nanoparticles having a diameter of 15-20 nm. The scattering layer is formed by titanium dioxide nanospheres having a diameter of 200-500 nm. The carrier transport layer is formed by titanium dioxide nanotubes having a length of 300-800 nm. Furthermore, a photoelectrode for the dye-sensitized solar cell, as well as a method for producing the photoelectrode, are also disclosed.

Abstract: Provided is a hydrogen peroxide sensitive metal nanoparticle including: a metal nanoparticle including a biocompatible metal and a hydrogen peroxide reactive ion which is bonded to a surface of the metal nanoparticle and is oxidized by hydrogen peroxide.

Abstract: The present invention relates to a continuous reactor a method for manufacturing nanoparticles. The reactor of the present invention includes: a plurality of first inputs for individually inputting a plurality of reagents; a first mixing part connected to the first inputs to mix the reagents; N number of first reaction units, each comprising a plurality of first diverging channels and a first converging channel to form a channel having the first diverging channels and the first converging channels alternately connected to one another in series for N times of diverging-converging actions, wherein N?1, and the first diverging channels of a 1st one of the first reaction units are connected to the first mixing part; and a first output connected to the first converging channel of an Nth one of the first reaction units, so as to output a product of nanoparticles.

Abstract: A process is described for preparing cubic metallic nanoparticles, comprising: a) preparing an aqueous solution containing a source of a metal from group VIII, a reducing agent R1 and a stabilizer; b) preparing an aqueous solution containing a source of a group VIII metal and a stabilizer at a temperature strictly higher than 70° C. and less than or equal to 80° C.; c) mixing at least a portion of the aqueous solution obtained in step a) with the aqueous solution obtained in step b) to obtain, in the presence of a reducing agent R2, metallic nanoparticles in the cubic form representing at least 70% by number of the entire quantity of metallic nanoparticles which are formed; d) depositing said metallic nanoparticles derived from step c) on a support.

Abstract: Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on the as-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.

Abstract: A one-step process for synthesizing gold-copper bimetallic nanocubes. The process comprises the step of simultaneously reducing a copper II salt and a gold halide by 1,2-hexadecanediol in diphenyl ether, and 1-dodecanethiol as well as surfactants 1-adamantanecarboxylic acid and 1-hexadecylamine. The copper II salt may be copper (II) acetylacetonate, copper chloride, copper sulfate, or copper phosphate. The gold halide may be chloroauric acid, gold chloride, gold bromide, or tetrabromoauric acid. The reduction may occur at a temperature between about 160 and 180 degrees Celsius. The copper II salt may be copper (II) acetylacetonate and the gold halide may be chloroauric acid.

Abstract: Superparamagnetic core shell nanoparticles having a core of a iron cobalt ternary alloy and a shell of a silicon oxide directly on the core and a particle size of 2 to 200 nm are provided. Methods to prepare the nanoparticles are also provided.

Abstract: Provided herein are methods for dehydrating single-walled metal oxide nanotubes by heating the SWNT under vacuum at 250-300° C.; methods of dehydroxylating SWNT, comprising heating the SWNT under vacuum at 300-340° C., and methods for maximizing the pore volume of a SWNT, comprising heating the SWNT at 300° C. under vacuum to partially dehydroxylate and dehydrate the SWNT; methods of modifying the inner surface of a single walled aluminosilicate nanotube (SWNT), comprising dehydration or dehydration and dehydroxylation, followed by reacting the SWNT with a derivative under anhydrous conditions to produce a SWNT that is derivatized on its inner surface. The invention also includes single-walled nanotubes produced by the methods of the invention.

Abstract: A silver salt solution and a reducing agent solution are added to an aqueous dispersing polymer solution to precipitate silver ribbons.

Abstract: The present invention discloses a method for manufacturing a palladium-platinum core-shell catalyst for a fuel cell. More specifically, the present invention discloses a method for manufacturing a palladium-platinum core-shell catalyst for a fuel cell, in which a platinum shell nano particle epitaxially grown on a palladium core is synthesized and dipped in a carbon support, thereby manufacturing the palladium-platinum core-shell catalyst for a hydrogen fuel cell, such that mass production of a uniform size is possible. Additionally, the techniques herein reduce the requirement for the use of expensive metal, which reduces the manufacturing cost of a fuel cell. Moreover, is the techniques herein are applicable to the field of high-efficiency hydrogen fuel cells having superior electric catalytic activity and durability.

Abstract: A system and method for manufacturing a carbon layer is provided. An embodiment comprises depositing a first metal layer on a substrate, the substrate comprising carbon. A silicide is eptiaxially grown on the substrate, the epitaxially growing the silicide also forming a layer of carbon over the silicide. In an embodiment the carbon layer is graphene, and may be transferred to a semiconductor substrate for further processing to form a channel within the graphene.

Abstract: The invention discloses a preparation method of nano-scale platinum (Pt) using an open-loop reduction system. The preparation method comprises the steps of: utilizing carbon nanotubes (CNTs) as a catalyst support; mixing platinum salt with a reducing agent and deionized water to form a precursor solution in a flask; heating the precursor solution in the flask at a predetermined temperature range to reduce nano-scale platinum nanoparticles on the carbon nanotubes by the process of water evaporation; allowing the water vapor to flow through a connection tube to a condenser; filling a cooling substance into the condenser via the first opening and draining the cooling substance from the condenser via the second opening to lower the temperature of the water vapor in the inner tube by the cooling substance and condense the water vapor into liquid water, which is collected with a beaker placed under the condenser.

Abstract: A method of preparing Group XIII selenide nanoparticles comprises reacting a Group XIII ion source with a selenol compound. The nanoparticles have an MxSey semiconductor core (where M is In or Ga) and an organic capping ligand attached to the core via a carbon-selenium bond. The selenol provides a source of selenium for incorporation into the semiconductor core and also provides the organic capping ligand. The nanoparticles are particularly suitable for solution-based methods of preparing semiconductor films.

Abstract: A method of making a nanoparticle filled dielectric material. The method includes mixing nanoparticle precursors with a polymer material and reacting the nanoparticle precursors mixed with the polymer material to form nanoparticles dispersed within the polymer material to form a dielectric composite.

Abstract: A simple, room-temperature method of producing CuO-doped zinc oxide nanoparticles was established by reacting zinc nitrate hexahydrate, copper nitrate trihydrate and cyclohexylamine (CHA) at room temperature. These nanoparticles may be used for photocatalytic degradation of cyanide in aqueous solutions. The degradation of cyanide is effective because electrons transfer from the p-type copper oxide to the n-type zinc oxide.

Abstract: A method for the synthesis of new metal based metal nanoparticles by the combination of conducting polymers and room temperature ionic liquids to produce nanoparticle electro-catalysts with very high catalytic activity and controllable size and high surface area to volume ratios.

Abstract: A device for making nano-scale particles of titanium dioxide includes a vacuum chamber; an evaporator, a gas supplier, a vacuum pump assembly, and a product collecting device. The evaporator is mounted in the vacuum chamber. The gas supplier communicates with the vacuum chamber. The vacuum pump assembly communicates with the vacuum chamber. The product collecting device includes a pump, a guide pipe connected with the pump, and a powder collector communicating with the guide pipe. The pump communicates with the vacuum chamber. The guide pipe is inserted in the powder collector, the powder collector is filled with organic solvents. A method of making nano-scale particles of titanium dioxide using the device is also provided.

Abstract: The present disclosure generally relates to methods of making nanoparticles having about 0.2 to about 35 weight percent of a therapeutic agent; and about 10 to about 99 weight percent of biocompatible polymer such as a diblock poly(lactic) acid-poly(ethylene)glycol.

Abstract: A carbon nanosphere has at least one opening. The carbon nanosphere is obtained by preparing a carbon nanosphere and treating it with an acid to form the opening. The carbon nanosphere with at least one opening has higher utilization of a surface area and electrical conductivity and lower mass transfer resistance than a conventional carbon nanotube, thus allowing for higher current density and cell voltage with a smaller amount of metal catalyst per unit area of a fuel cell electrode.

Abstract: There is provided a method of preparing a nickel nanoparticle, the method including: forming an aqueous solution by mixing water and a solution containing a hydroxyl group; forming a mixed liquid by adding carboxylic acid to the aqueous solution at a ratio of 10 to 20 wt % with regard to the solution containing a hydroxyl group; and adding a nickel salt to the mixed liquid and stirring the mixed liquid.

Abstract: A ligand design allows compact nanoparticle materials, such as quantum dots (QDs), with excellent colloidal stability over a wide range of pH and under high salt concentrations. Self-assembled biomolecular conjugates with QDs can be obtained which are stable in biological environments. Energy transfer with these ligands is maximized by minimizing distances between QDs/nanoparticles and donors/acceptors directly attached to the ligands or assembled on their surfaces.

Abstract: Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.