Abstract: A memristor structure has two electrodes sandwiching an insulating region, and includes a nanoparticle providing a conducting path between the two electrodes, wherein either the insulating region comprises an inorganic material and nanoparticle comprises a solid nanoparticle or a core/shell nanoparticle or the insulating region comprises an inorganic or organic material and the nanoparticle comprises a core/shell nanoparticle.

Abstract: A quantum dot-resin nanocomposite including a nanoparticle including a curable resin and a plurality of quantum dots contacting the nanoparticle. Also, a method of preparing the nanocomposite, and a molded article including the nanocomposite.

Abstract: A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

Abstract: A memristor structure has two electrodes sandwiching an insulating region, and includes a nanoparticle providing a conducting path between the two electrodes, wherein either the insulating region comprises an inorganic material and nanoparticle comprises a solid nanoparticle or a core/shell nanoparticle or the insulating region comprises an inorganic or organic material and the nanoparticle comprises a core/shell nanoparticle.

Abstract: Semiconductor nanocrystals including III-V semiconductors can include a core including III-V alloy. The nanocrystal can include an overcoating including a II-VI semiconductor.

Abstract: Polymerization process for preparing mono-disperse organic/inorganic nanocomposite microspheres in the field of nano technology is disclosed. The process comprises preparing of two different miniemulsion systems of A with inorganic nanoparticles and B with polymeric monomers in advance; adding water-soluble initiator into miniemulsion A, stirring till complete dissolution finally, heating the mixed system to a given temperature for isothermal reaction. The grain size of the as-prepared superparamagnetic Fe3O4/polystyrene using to present invention is homogeneous and controllable, and the magnetic particles content is controllable.

Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.

Abstract: The invention is directed to platelets containing micron or nanometer size particles wherein the micron or nanometer sized particles comprises an active agent. The invention is also directed to a pharmaceutical composition comprising a pharmaceutically acceptable carrier and the above platelets. The invention is further directed to methods of delivering the micron or nanometer size particles containing an active agent to a site of interest in a patient.

Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.

Abstract: A photodetector is described along with corresponding materials, systems, and methods. The photodetector comprises an integrated circuit and at least two optically sensitive layers. A first optically sensitive layer is over at least a portion of the integrated circuit, and a second optically sensitive layer is over the first optically sensitive layer. Each optically sensitive layer is interposed between two electrodes. The two electrodes include a respective first electrode and a respective second electrode. The integrated circuit selectively applies a bias to the electrodes and reads signals from the optically sensitive layers. The signal is related to the number of photons received by the respective optically sensitive layer.

Abstract: A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

Abstract: A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

Abstract: Disclosed herein is a nanocrystal-metal oxide complex. The nanocrystal of the nanocrystal-metal oxide complex is substituted with two or more different types of surfactants which are miscible with a metal oxide precursor and enable maintenance of luminescent and electrical properties of the nanocrystal. The nanocrystal-metal oxide complex exhibits superior optical and chemical stability and secures high luminescent efficiency of the nanocrystal. Accordingly, when the nanocrystal-metal oxide complex is used as a luminescent material of an electroluminescent device, it can improve luminescent efficiency and reliability of products. Further disclosed herein is a method for preparing the nanocrystal-metal oxide complex.

Abstract: The present invention is directed to solid composites including colloidal nanocrystals within a sol-gel host or matrix and to processes of forming such solid composites.

Abstract: A semiconductor phosphor nanoparticle including nanoparticle core made of a group 13-group 15 semiconductor; a shell layer coating the semiconductor nanoparticle core; and a metal-containing modified organic compound and a modified organic compound binding to a surface of the shell layer is disclosed.

Abstract: Semiconductor nanocrystals including III-V semiconductors can include a core including III-V alloy. The nanocrystal can include an overcoating including a II-VI semiconductor.

Abstract: The present application is directed to the preparation and use of a class of nanoparticles that contain a single Quantum Confined dopant. A QCA nanocrystal comprises of a plurality of host atoms in a nanocrystal of a size of less than 10 nm with a single atom of a dopant (or activator). This single QCA dopant, when confined, becomes polarized and creates a large magnetic-moment in a nanosize host that contains atoms of unpaired spins. The quantum confined atom (QCA) which is now pinned, triggers the alignment of the host atoms resulting in nanosize magnetic domain. Engineering of nanomagnets based on QCA nanoparticles can be used in different applications such as: sensors, drug delivery, bio-tagging, cell/DNA tagging, magnetic memories and others.

Abstract: As demonstrated herein, the ligand exchange chemistry of phosphine-stabilized Au11 clusters with ?-functionalized thiols is a powerful synthetic method that provides convenient access to a diverse family of functionalized Au11 clusters. The general nature of the presented ligand exchange approach, in combination with the ease preparation, makes this approach of broad utility. The approach is general and shows the high tolerance for a wide variety of functional groups. Mechanistic studies provided conclusive evidence that the Au11 core of the precursor particle remains intact during ligand exchange and showed that the ligand exchange of these particles follows a different pathway than for ligand exchanges of larger gold nanoparticles such as “Au101(PPh3)21Cl5”. Optical studies of the products show a strong dependence on the nature of the stabilizing thiol ligands.

Abstract: Provided is a nanocrystalline phosphor having a core/shell structure formed by a core of a group 13 nitride semiconductor and a shell layer, covering the core, including a shell film of a group 13 nitride mixed crystal semiconductor. This nanocrystalline phosphor has high luminous efficiency, and is excellent in reliability. Also provided is a coated nanocrystalline phosphor prepared by bonding modified organic molecules to the nanocrystalline phosphor and/or coating the nanocrystalline phosphor with the modified organic molecules. This coated nanocrystalline phosphor has high dispersibility. Further provided is a method of preparing a coated nanocrystalline phosphor by heating a mixed solution containing a core of a group 13 nitride semiconductor, a nitrogen-containing compound, a group 13 element-containing compound and modified organic molecules.

Abstract: Disclosed is a composition and method for fabricating novel hybrid materials comprised of, e.g., carbon nanotubes (CNTs) and crosslinked enzyme clusters (CECs). In one method, enzyme-CNT hybrids are prepared by precipitation of enzymes which are subsequently crosslinked, yielding crosslinked enzyme clusters (CECs) on the surface of the CNTs. The CEC-enzyme-CNT hybrids exhibit high activity per unit area or mass as well as improved enzyme stability and longevity over hybrid materials known in the art. The CECs in the disclosed materials permit multilayer biocatalytic coatings to be applied to surfaces providing hybrid materials suitable for use in, e.g., biocatalytic applications and devices as described herein.

Abstract: A composite nanoparticle makes it possible to significantly lower the temperature to separate an organic substance from a core and uniformly sinter the cores, and can be applied to bonding that replaces soldering. The composite nanoparticle includes a metal component as a core, and an organic substance surrounding the metal component and bonded to it by physical adsorption. The composite nanoparticles can be produced by allowing an inorganic metal salt and an organic material to coexist, and heating the inorganic metal salt and the organic material to a predetermined temperature and holding them at the temperature for a predetermined time so that the inorganic metal salt is decomposed to produce metal nanoparticles. Thus, an organic substance is bonded to the metal nanoparticles by physical adsorption without forming an organometallic compound through a reaction between the metal nanoparticles and the organic substance.

Abstract: Negatively charged luminescent CdSe—ZnS quantum dots (QDs) were successfully incorporated into novel luminescent glyconanospheres averaging around 190 nm in diameter through electrostatic interactions with carboxymethyldextran (CM-dextran) and polylysine. The glyconanospheres preferably contain as well carboxyl-modified iron oxide nanocrystals. In addition to electrostatic attraction between the negatively charged dextran, the negatively charged CdSe—ZnS QDs (and negatively charged iron oxide nanocrystals, if present), and the positively charged polylysine, covalent amide bonds were introduced to cross link the QDs (and negatively charged iron oxide nanocrystals, if present) with the polysaccharide matrix to further stabilize the glyconanospheres. The dextran residues on the surface of the nanospheres show high affinity toward the glucose binding protein-Concanavalin A (Con A).

Abstract: The invention relates to a method for producing magnetic nanoparticles which are made of metal oxide-polymer composites and are provided with an increased magnetic mobility, among other things, due the high metal oxide content and the morphological structure thereof. High-pressure homogenization has proven to be a reliable technique for producing the inventive magnetic nanoparticles. According to said technique, the components metal oxide and polymer are processed in a carrier medium. Water is used in most cases at pressures ranging from 500 bar to 1200 bar while using great shearing forces. High pressure homogenization creates a colloidally stable magnetic particle population having a diameter ranging below 200 nm while also resulting in the produced magnetic nanoparticles being provided with greater magnetic moments than the metal oxide used as an initial material at low magnetic field strengths.

Abstract: A method for forming arrays of metal, alloy, semiconductor or magnetic nanoparticles is described. An embodiment of the method comprises placing a scaffold on a substrate, the scaffold comprising, for example, polynucleotides and/or polypeptides, and coupling the nanoparticles to the scaffold. Methods of producing arrays in predetermined patterns and electronic devices that incorporate such patterned arrays are also described.

Abstract: There is provided an organic-inorganic composite material containing a single nanoparticle therein, which is prepared by individually dispersing hydrophilic inorganic nanoparticles having a uniform particle size and conjugating biodegradable polymers to the surface of the nanoparticle, and a method of preparing the same.

Abstract: A structure comprises at least a porous body holding a substance releasably, comprising a capping member for keeping the substance inside the pore and/or on at least a part of the entire surface of the porous body, and a connecting member for connecting the porous body and the capping member separably, the connecting member comprising a biopolymer compound. A method for releasing a substance from the structure set forth comprises the steps of applying stimulation from outside to the structure, and cleaving at least one of the bonding between the connecting member and the capping member and the bonding between the connecting member and the porous member to make the substance releasable from the structure.

Abstract: A magnetic nanoparticle (22), a magnetic nanomaterial (30), assembly (30), and a method for synthsising a magnetic nanoparticle, relating to thermodynamically stable and air stable ferromagnetic nanoparticles of adjustable aspect ratio made upon decomposition of organometallic precursors in solution in the presence of a reaction gas and a mixture of organic ligands. The magnetic nanomaterial comprises magnetic nanoparticles of homogeneous size, shape, and magnetic orientation that comprises a magnetic core (24, 34) ferromagnetic at room temperature and/or operating temperatures, and a non-magnetic matrix (26, 36) encapsulating the magnetic core. This magnetic nanomaterial could be used in high frequency integrated circuit applications, such as used in wireless portable electronic devices, to enchance magnetic field confinement and improve passive component performance at MHz and GHz frequency in a variety of passive and active devices, such as transformers, on-chip signal isolation, inductors, and the like.

Abstract: Nanometer-scaled up-converting fluoride phosphor particles and processes of making them are disclosed. In the process, an aqueous solution consisting of soluble salts of rare-earth metal ions at a molar ratio of (yttrium, lanthanum or gadolinium): ytterbium:(erbium, holmium, terbium or thulium)=(70-90):(0-29):(0.001-15) is mixed a rare-earth metal chelator and a soluble fluoride salt to form precipitates, which are then annealed at an elevated temperature to produce nanometer-scaled up-converting fluoride phosphor particles. The particle size is between 35 nm and 200 nm, and can be controlled by the amount of the metal chelator added to the solution. The nanometer-sized particle is applicable to many biological assays.

Abstract: A method by which silicon nanostructures may be selectively coated with molecules or biomolecules using an electrochemical process. This chemical process may be employed as a method for coating many different nanostructures within a circuit, each with a different molecular or biomolecular material. The density of devices within a circuit of devices that can be coated with different molecules is limited only by the ability to electronically address each device separately. This invention has applications toward the fabrication of molecular electronic circuitry and toward the fabrication of nanoelectronic molecular sensor arrays.

Abstract: The invention provides a semiconductor nanoparticle comprising a semiconductor nanoparticle core on the surface of which electron-releasing groups are arranged, the semiconductor nanoparticle having a fluorescent property and water-solubility. The invention also provides a water-soluble semiconductor nanoparticle with an excellent fluorescent property that can be easily prepared by adding a surface-treating material for providing a semiconductor nanoparticle with one or more kinds of electron-releasing groups, and arranging the electron-releasing groups on the surface of the semiconductor nanoparticle core.

Abstract: Functionalized fluorescent nanocrystal compositions and methods for making and using these compositions are disclosed. The compositions are fluorescent nanocrystals coated with at least one material. The coating material has chemical compounds or ligands with functional groups or moieties with conjugated electrons and moieties for imparting solubility to coated fluorescent nanocrystals in aqueous solutions. The coating material provides for functionalized fluorescent nanocrystal compositions which are water soluble, chemically stable, and emit light with a high quantum yield and/or luminescence efficiency when excited with light. The coating material may also have chemical compounds or ligands with moieties for bonding to target molecules and cells as well as moieties for cross-linking the coating.

Abstract: The resistance of a semiconductor nanoparticle provided with a surface treatment, such as an OH coating or ammonia treatment, against external factors is improved. A semiconductor nanoparticle provided with a surface treatment such as an OH coating or ammonia treatment and having high-emission properties is coated with an organic material, such as hexylamine, dodecylamine, trioctylmethylammonium, tridodecilmethylammonium, and similar organic material, by migrating the semiconductor nanoparticle from an aqueous phase to an organic solvent, such as hexane or toluene, thereby providing it with durability against external factors.

Abstract: A molecular device is provided. The molecular device comprises a junction formed by a pair of crossed electrodes where a first electrode is crossed by a second electrode at a non-zero angle and at least one connector species including at least one switchable moiety and connecting the pair of crossed electrode in the junction. The junction has a functional dimension ranging in size from microns to nanometers. The molecular device further includes a buffer layer comprising nanocrystals interposed between the connector species and the second electrode.

Abstract: Nanocrystal comprising an inorganic core consisting of least one metal and/or at least one semi-conductor compound comprising at least one metal, the external surface of said nanocrystal being provided with an organic coating layer, consisting of at least one ligand compound of formula (I): X—Y-Z??(I) in which X represents a 1,1-dithiolate or 1,1-diselenoate group that is linked by the two atoms of sulphur or selenium to an atom of metal of the external surface of said nanocrystal; Y represents a spacer group, such as a group capable of allowing a transfer of charge or an insulating group; Z is a group chosen from among groups capable of communicating specific properties to the nanocrystal. Their methods of manufacture.

Abstract: A surface treated particle comprising a plurality of inorganic, metallic, semi-metallic, and/or metallic oxide particles and a star-graft copolymer with looped and/or linear polymeric structure on a star-graft copolymer, obtainable by a heterogeneous polymerization reaction in the particle surface proximity, encapsulating at least a portion of said particles and a method for making the same. The surface treatment comprises: Si (w, x, y, z), where: w, x, y, and z are mole percent tetrafunctional, trifunctional, difunctional, and monofunctional monomeric units, respectively. Product(s) per se, defined as surface treated ZnO and/or TiO2, and the use of the product(s) per se in personal care formulations are excluded.

Abstract: The present invention is directed to solid composites including colloidal nanocrystals within a sol-gel host or matrix and to processes of forming such solid composites. The present invention is further directed to alcohol soluble colloidal nanocrystals useful in formation of sol-gel based solid composites.