Abstract: The present invention is directed to compositions of matter, systems, and methods to manufacture nanowires. In an embodiment, a buffer layer is placed on a nanowire growth substrate and catalytic nanoparticles are added to form a catalytic-coated nanowire growth substrate. Methods to develop and use this catalytic-coated nanowire growth substrate are disclosed. In a further aspect of the invention, in an embodiment a nanowire growth system using a foil roller to manufacture nanowires is provided.

Abstract: A method of producing a nanoscale structure having substantially immobilized nanoparticles arranged at a predetermined patterned is generally disclosed. First, a curable polymeric solution is placed within a well defined by a wafer. The curable polymeric solution includes a curable polymeric material and a magnetically coated nanoparticle. The well is positioned adjacent to an atomically-smooth medium. A recording head is moved in a predetermined manner to produce a magnetic field profile that substantially immobilizes the magnetically coated nanoparticle within the curable polymeric solution in the well. The curable polymeric solution is cured such that the magnetically coated nanoparticle remains substantially immobilized after the magnetic field profile is removed.

Abstract: A method of adsorbing a nano-structure and an adsorption material using a solid thin film mask, including; depositing the mask over the entire surface of a tip of a probe microscope, grinding the end of the tip having the mask against a solid, thus removing the mask from the end of the tip, depositing a linker molecule layer over the entire surface of the tip the end of which has no mask, immersing the tip having the deposited linker molecule layer in a nano-structure solution, thus adsorbing the nano-structure on the linker molecule, and removing the mask from the tip. The mask is used to prevent deformation of the tip, and the nano-structure and the adsorption material can be deposited only on the end of the tip, regardless of the properties of the nano-structure and the adsorption material and regardless of the surface material of the tip and the properties thereof.

Abstract: Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength.

Abstract: A method for synthesizing single-wall carbon nanotubes (SWNTs) generally includes the steps of: providing a substrate having an upper portion comprised of indium tin oxide; forming an aluminum layer on the upper portion of the substrate; forming a catalyst layer on the aluminum layer to obtain a treated substrate; annealing the treated substrate so as to transform the catalyst layer into a plurality of oxidized catalyst particles on the substrate; and growing a plurality of single-wall carbon nanotubes on the treated substrate using a chemical vapor deposition process.

Abstract: A directional conductivity nanocomposite material, apparatuses and processes for making such material are generally described. A directional conductivity nanocomposite material may comprise a supporting material such as ceramic or polymer, with directionally conductive nanorod structures running through the supporting material. The material may be made by orienting nanorods in an electrophoretic gel using an electrical or magnetic field to align the nanorods, removing the gel, reinforcing the nanorods, and flowing in supporting material.

Abstract: The present invention relates to gold nanocages containing magnetic nanoparticles and a preparation method thereof. More specifically, relates to hollow-type gold nanocage particles, which contain iron oxide nanoparticles having a magnetic property and have an optical property of strongly absorbing or scattering light in the near-infrared (NIR) region, as well as a preparation method thereof. Due to their optical property and magnetic property, the magnetic nanoparticle-containing gold nanocages can be used in various applications, including analysis in a turbid medium with light, cancer therapy or biomolecular manipulation using light, contrast agents for magnetic resonance imaging, magnetic hyperthermia treatment and drug delivery guide, etc.

Abstract: A nanotube apparatus is described. The apparatus includes a first electrode having a first edge. An array of nanotubes distributed in a closed path are also included. The closed path surrounds the first electrode and adjacent to the first edge. The closed path is also locally straight. Each of the nanotubes has an end that is free to oscillate. The apparatus also includes a second electrode having a second edge surrounding both the first electrode and the array of nanotubes. Methods are also described.

Abstract: The synthesis of nanostructures uses a catalyst that may be in the form of a thin film layer on a substrate. Precursor compounds are selected for low boiling point or already exist in gaseous form. Nanostructures are capable of synthesis with a masked substrate to form patterned nanostructure growth. The techniques further include forming metal nanoparticles with sizes <10 nm and with a narrow size distribution. Metallic nanoparticles have been shown to possess enhanced catalytic properties. The process may include plasma enhanced chemical vapor deposition to deposit Ni, Pt, and/or Au nanoparticles onto the surfaces of SiO2, SiC, and GaN nanowires. A nanostructure sample can be coated with metallic nanoparticles in approximately 5-7 minutes. The size of the nanoparticles can be controlled through appropriate control of temperature and pressure during the process. The coated nanowires have application as gas and aqueous sensors and hydrogen storage.

Abstract: A process for forming thermoelectric nanoparticles includes the steps of a) forming a core material micro-emulsion, b) adding at least one shell material to the core material micro-emulsion forming composite thermoelectric nanoparticles having a core and shell structure.

Abstract: A method for the non-catalytic growth of nanowires is provided. The method includes a reaction chamber with the chamber having an inlet end, an exit end and capable of being heated to an elevated temperature. A carrier gas with a flow rate is allowed to enter the reaction chamber through the inlet end and exit the chamber through the exit end. Upon passing through the chamber the carrier gas comes into contact with a precursor which is heated within the reaction chamber. A collection substrate placed downstream from the precursor allows for the formation and growth of nanowires thereon without the use of a catalyst. A second embodiment of the present invention is comprised of a reaction chamber, a carrier gas, a precursor target, a laser beam and a collection substrate. The carrier gas with a flow rate and a gas pressure is allowed to enter the reaction chamber through an inlet end and exit the reaction chamber through the exit end.

Abstract: The invention relates to a method for producing electronic components consisting in carrying out a first anodization of a carrier material (1) for forming at least one first pore (3) extending in a first direction in said carrier material (1) and in carrying out a second anodization for forming at least one second pore (17) extending in the carrier material (1) in a second direction different from the first direction.

Abstract: In a method for producing a component (20) with a coating (24) containing nanoparticles (21), it is provided that, in order to introduce the nanoparticles (21) into the coating (24), a film (19) with the dispersely distributed nanoparticles (21) is applied to the surface (22) to be coated, which decomposes with incorporation of the nanoparticles (21) during the actual coating operation and is thereby not incorporated into the layer.

Abstract: Compositions of nanoparticles functionalized with at least one zwitterionic moiety, methods for making a plurality of nanoparticles, and methods of their use as diagnostic agents are provided. The nanoparticles have characteristics that result in minimal retention of the particles in the body compared to other nanoparticles. The nanoparticle comprises a core, having a core surface essentially free of silica, and a shell attached to the core surface. The shell comprises at least one silane-functionalized zwitterionic moiety.

Abstract: A field emission device includes; a substrate including at least one groove, at least one metal electrode disposed respectively in the at least one groove, and carbon nanotube (“CNT”) emitters disposed respectively on the at least one metal electrode, wherein each of the CNT emitters includes a composite of Sn and CNTs.

Abstract: A method of coating nanoparticles comprising subjecting nanoparticles, a coating precursor and one or more reagents to shear, wherein the coating precursor and the one or more reagents react to provide a coating on the nanoparticles.

Abstract: Nanostructured layers with 10 nm to 50 nm pores spaced 10-50 nm apart, a method for making such nanostructured layers, optoelectronic devices having such nanostructured layers and uses for such nanostructured layers are disclosed. The nanostructured layer can be formed using precursor sol, which generally includes one or more covalent metal complexes, one or more surfactants, a solvent, one or more optional condensation inhibitors, and (optionally) water. Evaporating the solvent from the precursor sol forms a surfactant-templated film. Covalently crosslinking the surfactant-templated film forms a nanostructured porous layer. Pore size is controlled, e.g., by appropriate solvent concentration, choice of surfactant, use of chelating agents, use of swelling agents or combinations of these.

Abstract: The present invention describes a method of and an apparatus for providing a wafer, the wafer including Silicon; etching trenches in the wafer to form Silicon fins; filling Silicon Oxide in the trenches; planarizing the Silicon Oxide; recessing the Silicon Oxide to a first thickness to form exposed Silicon pedestals from the Silicon fins; depositing SiGe over the exposed Silicon pedestal; recessing the Silicon Oxide to a second thickness; undercutting the exposed Silicon pedestals to form necked-in Silicon pedestals; oxidizing thermally and annealing the SiGe; and forming Germanium nanowires.

Abstract: A method for manufacturing core-shell nanostructure is provided. A nanoparticle containing a metal is provided. The nanoparticle is capable of transforming the light energy to the thermal energy. The nanoparticle is distributed onto a first thermosetting material precursor. A second thermosetting material precursor is coated on the first thermosetting material precursor to cover the nanoparticle. The nanoparticle is irradiated by a light source to produce the thermal energy such that the first thermosetting material precursor and the second thermosetting material precursor around the nanoparticle are cured to form a material layer on the nanoparticle. The uncured portion of the first thermosetting material precursor and the uncured portion of the second thermosetting material precursor are removed.

Abstract: A method for making a carbon nanotube-based device is provided. A substrate with a shadow mask layer formed thereon is provided, to define an unmasked surface area on the substrate. The substrate is rotated around an axis. A catalyst layer including at least one catalyst block is formed on the unmasked surface area of the substrate. A thickness of the at least one catalyst block is decreased gradually from a first end thereof to an opposite second end thereof, and somewhere the at least one catalyst block having a region with a thickness proximal or equal to an optimum thickness at which carbon nanotubes growing fastest. A carbon source gas is introduced. At least one carbon nanotube array extending from the catalyst layer using a chemical vapor deposition process is formed. The at least one carbon nanotube array is arc-shaped, and bend in a direction of deviating from the region.

Abstract: A new method to produce solid nanocrystalline cellulose (NCC) films containing patterns by differential heating of aqueous suspensions of NCC has been discovered. When acid-form NCC suspensions are dried by heating to temperatures above 50° C., darkening of the NCC can occur, while neutral forms of NCC can produce iridescent chiral nematic films by heating to temperatures up to 105° C. Placing materials of different thermal conductivity beneath the container containing an evaporating NCC suspension results in watermark-like patterns of different iridescent colour imprinted within the film structure. Other colloidal rod-like particles can be employed in place of nanocrystalline cellulose (NCC), for example chitin or chitosan.

Abstract: This invention relates to a L10-ordered FePt nanodot array which is manufactured using capillary force lithography, to a method of manufacturing the L10-ordered FePt nanodot array and to a high density magnetic recording medium using the L10-ordered FePt nanodot array. This method includes depositing a FePt thin film on a MgO substrate, forming a thin film made of a polymer material on the deposited FePt thin film using spin coating, bringing a mold into contact with the spin coated FePt thin film, annealing the mold and a polymer pattern which are in contact with each other, cooling and separating the mold and the polymer pattern which are annealed, controlling a size of the polymer pattern through reactive ion etching, ion milling a portion of the FePt thin film uncovered with the polymer pattern thus forming a FePt nanodot array and then removing a remaining polymer layer, and annealing the FePt nanodot array.

Abstract: A method of manufacturing a composite material, the method comprising: providing a first layer (14) of CNTs reinforcement elements (13) with liquid matrix material in interstitial gaps between the reinforcement elements; dipping a second layer of reinforcement elements into the liquid matrix material in the interstitial gaps such that the reinforcement elements in the second layer become partially embedded in the first layer of reinforcement elements and partially protrude from the first layer of reinforcement elements, impregnating the protruding parts of the reinforcement elements in the second layer with liquid matrix material; and curing the liquid matrix material.

Abstract: Methods and apparatuses for forming linear nanoparticle arrays, and the nanoparticle formulations formed therewith, are described. The nanoparticle arrays may be incorporated into coating materials, and in one example may be provided at or near the surface of two-component polyurethane coatings for use in automotive refinish clear coats. Coatings incorporating such nanoparticles may be applied to a substrate under shear to cause the nanoparticles to arrange linearly.

Abstract: The present invention provides a method of manufacturing a film containing nano-crystalline cellulose.

Abstract: The present invention provides a method and apparatus for transferring an array of oriented carbon nanotubes from a first surface to a second surface by providing the array of oriented carbon nanotubes on the first surface within a vacuum chamber, providing the second surface within the vacuum chamber separate from the first surface, and applying an electric potential between the first surface and the second surface such that the array of oriented carbon nanotubes are sublimed from the first surface and re-deposited on the second surface.

Abstract: A method and device of nanostructured titania that is crack free. A method in accordance with the present invention comprises depositing a Ti film on a surface, depositing a masking layer on the Ti film, etching said masking layer to expose a limited region of the Ti film, the limited region being of an area less than a threshold area, oxidizing the exposed limited region of the Th.ucsbi film, and annealing the exposed limited region of the Ti film.

Abstract: Luminescent inorganic nanoparticles comprising: (a) a core made from a first metal salt or oxide being surrounded by (b) a shell made from a second metal salt or oxide being luminescent and having non-semiconductor properties. These nanoparticles can be advantageously used in (fluorescence) resonance energy transfer ((F)RET)-based bioassays in view of their higher (F)RET efficiency.

Abstract: A nanomaterial with a core-shell structure is provided. The nanomaterial comprises a shell and a core, wherein the shell is located on at least a portion of the surface of the core. The shell is substantially composed of a first metal oxide. The core is substantially composed of a second metal oxide, while the second metal oxide is a non-stoichiometric compound. The inventive nanomaterial exhibits excellent properties, such as good gas sensitivity and better field emission property, and has a high applicability.

Abstract: The invention relates to the preparation of a catalytic composition that comprises a carbonated structuring material (MSC) associated with a catalyst (CAT). The invention comprises mixing a solution of a first solvent (SOL1) including the carbonated structuring material (MSC) and a solution of a second solvent (SOL2) including the catalyst (CAT), and agitating (AGM) the resulting mixture up to the precipitation if the catalyst on the carbonated structuring material. According to one aspect, the catalyst and the structuring material are not soluble in the mixture of the first and second solvents. The composition thus obtained can be used after filtration as a material for an electrode in a fuel cell.

Abstract: The present application describes a crossbar memory array. The memory array includes a first array of parallel nanowires of a first material and a second array of parallel nanowires of a second material. The first and the second array are oriented at an angle with each other. The array further includes a plurality of nanostructures of non-crystalline silicon disposed between a nanowire of the first material and a nanowire of the second material at each intersection of the two arrays. The nanostructures form a resistive memory cell together with the nanowires of the first and second materials.

Abstract: The present disclosure relates to methods for producing large scale nanostructured material comprising carbon nanotubes. Therefore, there is disclosed a method for making nanostructured materials comprising depositing carbon nanotubes onto at least one substrate via a deposition station, wherein depositing comprises transporting molecules to the substrate from a deposition fluid, such as liquid or gas. By using a substrate that is permeable to the carrier fluid, and allowing the carrier fluid to flow through the substrate by differential pressure filtration, a nanostructured material can be formed on the substrate, which may be removed, or may act as a part of the final component.

Abstract: The specification describes a method for selectively depositing carbon nanotubes on the end face of an optical fiber. The end face of the optical fiber is exposed to a dispersion of carbon nanotubes while light is propagated through the optical fiber. Carbon nanotubes deposit selectively on the light emitting core of the optical fiber.

Abstract: The present invention relates to a process of preparing a nanogap electrode and a nanogap device using the same, and a preparing process according to the present invention is characterized in that reduced metal is grown by reduction reaction from a metal ion in solution on the surface of a metal pattern with a predetermined shape. A method of preparing a nanogap electrode according to the present invention has an advantage that nanogap electrodes having a gap distance of 1-100 nm, which are difficult to prepare by a conventional method, can be easily prepared in a reproducible and uniform manner.

Abstract: Fabrication techniques are disclosed for the formation of electrically conductive, optically transparent films of exfoliated graphite nanoparticles (EGN). The techniques allow the controlled deposition of EGN nanoplatelets (graphene sheets) and other nanoparticles (e.g., metals, metal oxides) in compact monolayer or multilayer film structures. The compact films have high electrical conductivities and optical transparencies in the visible spectrum of electromagnetic radiation. A first method relates to the deposition of nanoparticles onto a substrate from a bulk suspension using a convective assembly technique. A second method relates to the suspension deposition of EGN nanoplatelets from a from a liquid-liquid interface onto a substrate. Both methods can be used to form EGN film-coated substrates. The second method also can be used to form multilayer, free-standing, defect-free EGN films.

Abstract: The present invention relates to high content surface areas containing nickel and/or cobalt metallic compounds assembled on a modified Tobacco mosaic virus (TMV) template, wherein the modified TMV template is engineered to encode unique placement of cysteine residues that self-assemble onto gold patterned surfaces in a substantially aligned fashion, producing a >10 fold increase in surface area. Deposition of ionic metals onto the surface assembled virus templates produce uniform metal coatings for the fabrication of oriented high surface area materials.

Abstract: Disclosed herein is a method for producing catalyst-free single crystal silicon nanowires. According to the method, nanowires can be produced in a simple and economical manner without the use of any metal catalyst. In addition, impurities contained in a metal catalyst can be prevented from being introduced into the nanowires, contributing to an improvement in the electrical and optical properties of the nanowires. Also disclosed herein are nanowires produced by the method and nanodevice comprising the nanowires.

Abstract: The invention relates to a process for the analysis of molecules having a molecular weight of <1500 Da by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), wherein an analyte containing low molecular weight molecules is applied to a matrix material, which is characterized in that the matrix material comprises fullerene-derivatised silica. This process allows clear identification of small molecules through intensive signals without matrix -related background disturbances.

Abstract: Fabrication of refractory metal nanoparticles and carbon nanotubes is disclosed. As an example, a method may include providing a solvent and providing a surfactant having a first surfactant configured to stabilize low oxidation states of a refractory metal and a second surfactant configured to protect refractory metal nanoparticles. The method may further include providing a refractory metal precursor and providing a reactant for reacting with the refractory metal precursor and forming refractory metal nanoparticles. The refractory metal may include rhenium, tungsten, tantalum, or hafnium. The refractory metal nanoparticles may include rhenium, tungsten, tantalum, or hafnium nanoparticles. A carbon nanotube product may include refractory metal nanoparticles and carbon nanotubes, where the refractory metal nanoparticles may include rhenium, tungsten, tantalum, or hafnium nanoparticles.

Abstract: A method of obtaining a surface-enhanced optical property of an analyte using a flexible structured substrate having a metal layer conformably disposed on nanostructure, a flexible structured substrate, and a method of making the same.

Abstract: A nanoparticle having a core/shell structure can be rapidly and reproducibly prepared by the inventive method which comprises: (i) dissolving a shell precursor in a solvent to form a shell precursor solution, and then allowing the shell precursor solution to be stabilized at a temperature suitable for the shell precursor to form an overcoat on the surface of a core nanoparticle; and (ii) adding a powder form of the core nanoparticle to the stabilized shell precursor solution.

Abstract: The present invention is to fabricate a flip-chip diode which emits a white light. The diode has a film embedded with silicon quantum dots. And the white light is formed by mixing colorful lights through the film.

Abstract: A solar cell includes multiple organic materials (including at least one donor material and at least one acceptor material) and multiple inorganic materials. The organic and inorganic materials collectively form multiple hybrid heterojunction structures. Each hybrid heterojunction structure includes at least two organic materials and at least one inorganic material. A first of the inorganic materials could include nanowires and/or nanotubes, and a second of the inorganic materials could include nanoparticles and/or quantum dots. At least some of the nanoparticles or quantum dots could have different sizes, where the different sizes are associated with different absorption bandgaps. Excitons photo-generated in at least one of the organic materials may dissociate into holes and electrons. Also, electrons and holes photo-generated in at least one of the inorganic material may separate. Further, one or more of the inorganic materials may transport at least some of the electrons towards one of multiple electrodes.

Abstract: A method of forming an array of nanorods on a crystalline substrate includes heating a composition that includes the crystalline substrate, a nanorod precursor, and a surfactant. The surfactant is capable of associating with the surface of the nanorods. The resulting nanostructures formed from the methods may be used in a variety of devices, including dye-sensitizing solar cell devices.

Abstract: Techniques for fabricating nanostructures are provided. In one embodiment a method includes forming a multilayer stack including at least one pair of a structural layer and a sacrificial layer on a substrate, patterning the multilayer stack in order to fabricate a nanostructure, and releasing the nanostructure from the patterned multilayer stack.

Abstract: Techniques for forming metal catalyst particles on a metal tip, and nanostructures on a metal tip are provided.

Abstract: This invention provides a substrate structure capable of controlling the threshold voltage of a MOS transistor independently of the substrate concentration and easily suppressing a short channel effect caused by reducing the channel length. A first nanosilicon film formed from nanosilicon grains having the same grain size is formed on a silicon oxide film on the surface of a silicon substrate. A silicon nitride film is formed on the first nanosilicon film. Then, a second nanosilicon film having an average grain size different from that of the first nanosilicon film is formed. A semiconductor circuit device is formed on a thus manufactured nanosilicon semiconductor substrate.

Abstract: A metallic nanoparticle coated microporous substrate, the process for preparing the same and uses thereof are described.

Abstract: A method for in-situ formation of surface modified mixed oxide material includes burning a titanium chloride comprising compound and a silicon chloride comprising compound in the presence of oxygen and hydrogen in a reactor to form a plurality of silica-titania mixed oxide particles, wherein a temperature during the burning step is from 700 to 1100° C. In embodiments of the invention a concentration of hydrogen is in a stoichiometric excess (H2:O2) to oxygen from 2.02:1 to 2.61:1 during the burning step. While the mixed oxide particles are still in the reactor, a metal is deposited on a surface of the mixed oxide particles at a temperature below the temperature of the burning step, such as in the form of randomly located nanoparticle clusters which only partially cover the surface of the mixed oxide particles. The titania can be non-stoichiometric TiO2-x, wherein 0.1<x<0.3 at a surface of the particles and in the bulk of the particles x is less than at the surface.

Abstract: Substrates having nanostructures disposed thereon and methods of forming nanostructures on the substrates are disclosed. In particular, embodiments of the present invention provide for structures having a substrate having a non-planar surface. In an embodiment, a portion of the non-planar surface has at least one layer of nanostructures disposed thereon.