3830 results about "Nano structuring" patented technology

A method of forming a periodic array of nano-scale objects using a block copolymer, and nano-scale object arrays formed from the method are provided. The method for forming the arrays generally includes the steps of depositing a block copolymer of at least two blocks on a substrate to form an ordered meso-scale structured array of the polymer materials, forming catalytic metal dots based on the meso-scale structure, and growing nano-scale objects on the catalytic dots to form an ordered array of nano-scale objects.

A method of forming a sensor for detecting gases and biochemical materials that can be fabricated at a temperature in a range from room temperature to 400° C., a metal oxide semiconductor field effect transistor (MOSFET)-based integrated circuit including the sensor, and a method of manufacturing the integrated circuit are provided. The integrated circuit includes a semiconductor substrate. The sensor for detecting gases and biochemical materials includes a pair of electrodes formed on a first region of the semiconductor substrate, and a metal oxide nano structure layer formed on surfaces of the pair electrodes. A heater is formed to perform thermal treatment to re-use the material detected in the metal oxide nano structure layer. Also, a signal processor is formed by a MOSFET to process a predetermined signal obtained from a quantity change of a current flowing through the pair of electrodes of the sensor. To form the sensor, the metal oxide nano structure layer is formed on surfaces of the pair of electrodes at a temperature in a range from room temperature to 400° C.

A lithium secondary battery comprising a cathode, an anode, and a separator-electrolyte assembly or electrolyte layer disposed between the cathode and the anode, wherein the anode comprises: (a) an integrated nano-structure of electrically conductive nanometer-scaled filaments that are interconnected to form a porous network of electron-conducting paths comprising interconnected pores, wherein the filaments have a transverse dimension less than 500 nm; and (b) a foil of lithium or lithium alloy as an anode active material. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.

The present invention provides a novel class of hard nano-structured materials comprising sp2 bonded graphite-like layers bonded together by sp3 three-dimensional diamond-like frameworks, wherein the whole carbon structure is stabilized with at least two alloying elements: the first alloying element selected from the group consisting of O, H, N, and a combination thereof; and the second alloying element selected from the group consisting of Si, B, Zr, Ti, V, Cr, Be, Hf, Al, Nb, Ta, Mo, W, Mn, Re, Fe, Co, Ni, Mn, Re, Fe, Co, Ni and a combination thereof. Also disclosed, are methods of manufacture of the novel class of materials.

A rechargeable lithium metal or lithium-ion cell comprising a cathode having a cathode active material and/or a conductive supporting structure, an anode having an anode active material and/or a conductive supporting nano-structure, a porous separator electronically separating the anode and the cathode, a highly concentrated electrolyte in contact with the cathode active material and the anode active material, wherein the electrolyte contains a lithium salt dissolved in an ionic liquid solvent with a concentration greater than 3 M. The cell exhibits an exceptionally high specific energy, a relatively high power density, a long cycle life, and high safety with no flammability.

Siloxane polymer ligands for binding to quantum dots are provided. The polymers include a multiplicity of amine or carboxy binding ligands in combination with long-alkyl chains providing improved stability for the ligated quantum dots. The ligands and coated nanostructures of the present invention are useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nano structures.

A novel method for fabrication of hybrid semiconductor-graphene nanostructures in large scale by floating graphene sheets on the surface of a solution is provided. Using this approach, crystalline ZnO nano/micro-rod bundles on graphene fabricated using chemical vapor deposition were prepared. UV detectors fabricated using the as-prepared hybrid ZnO-graphene nano-structure with graphene being one of the two electrodes show high sensitivity to ultraviolet light, suggesting the graphene remained intact during the ZnO growth. This growth process provides a low-cost and robust scheme for large-scale fabrication of semiconductor nanostructures on graphene and may be applied for synthesis of a variety of hybrid semiconductor-graphene nano-structures demanded for optoelectronic applications including photovoltaics, photodetection, and photocatalysis.

A transparent anti-reflective article includes a transparent substrate having a first refractive index and a first surface. An anti-reflective layer is formed within the first surface of the transparent substrate through use of one of nanosphere lithography, deep ultra-violet photolithography, electron beam lithography, and nano-imprinting. The anti-reflective layer includes a subwavelength nano-structured second surface including a plurality of protuberances. Such protuberances have a predetermined maximum distance between adjacent protuberances and a predetermined height for a given wavelength such that the anti-reflective layer includes a second refractive index lower than the first refractive index to minimize light diffraction and random scattering therethrough. The predetermined height is approximately equal to a quarter of the given wavelength divided by the second refractive index.

The present invention provides a method of manufacturing a nano-array electrode with a controlled nano-structure by filling an electrode material into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte, or by filling a material into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte and then filling an electrode material into the spaces defined by the nano-array formed by removing the anodic-oxide porous alumina film, or by filling repeatedly an electrode material in the fine pores of the anodic-oxide porous alumina film to fill a plurality of electrode materials. A high-performance, high-efficiency photoelectric converting device comprising a nano-array electrode manufactured by the method is also disclosed.

The invention discloses a graphene/ stannic oxide nanometer compounding resistance type film gas sensor, which takes ceramics as a basal body. The surface of the ceramic basal body is photo-etched and evaporated with multiple pairs of interdigital gold electrodes, and is coated with gas-sensitive films of graphene and stannic oxide nanometer composite, and the manufactured resistance type film gas sensor has the advantages of simple manufacturing process and low cost. The gas-sensitive film is composed of a grapheme namosheet layer in a three-dimensional nano-structure and stannic oxide crystal particle composite with an orientated growth characteristic, the introduction of the graphene can favorably reduce the resistance of sensor elements, and the formation of the three-dimensional nano-structure can obviously enhance the specific surface area of the composite, thus the absorption and the diffusion of the gas can be promoted so as to greatly enhance the room temperature gas sensitive response sensitivity of elements. The graphene/stannic oxide nanometer compounding resistance type film gas sensor has the characteristics of high response sensitivity to low concentration ammonia, fast response, favorable recovering performanc, capability of carrying out the detection at the room temperature, and the like, which can be widely applied in the agricultural and industrial production process, and the room temperature detection and control of the concentration of ammonia in the atmospheric environment.

A nanostructured device according to the invention comprises a first group of nanowires protruding from a substrate where each nanowire of the first group of nanowires comprises at least one pn- or p-i-n-junction. A first contact, at least partially encloses and is electrically connected to a first side of the pn- or p-i-n-junction of each nanowire in the first group of nanowires. A second contacting means comprises a second group of nanowires that protrudes from the substrate, and is arranged to provide an electrical connection to a second side of the pn- or p-i-n-junction.

The invention belongs to the field of carbon materials, and particularly relates to a preparation method for a graphene heating film. Graphene powder is evenly scattered in an organic solvent by using an ultrasonic method, a stirring method and other methods to obtain a graphene solution with the concentration of 0.05mg/ml to 0.5mg/ml, the graphene evenly covers an organic filter film or a water-attributed filter film through a suction filtration method, the grapheme film and the filter film are separated through a mechanical stripping method or a soaking method or an organic solvent dissolving method, the graphene thin film is obtained, electrodes are added to the graphene thin film, and heat can be generated by applying voltages on the graphene thin film. According to the preparation method for the graphene heating film, the unique two-dimensional nano-structure, the characteristic of the large ratio of thickness to radial dimension and the characteristic of the high specific surface area of the graphene are utilized, through the preparation technology, evenly communicated conductive networks are formed among graphene sheet layers, and much heat can be generated by applying low voltages (1-10V). The preparation method for the graphene heating film has the advantages that the preparation process is simple and easy to control and free of pollution, and the size is adjustable, and the preparation method for the graphene heating film is suitable for large-scale production.

The invention belongs to the new field of chemical engineering, and particularly relates to a nano material with clay as a carrier and perovskite type compound nano particles as active components and a preparation method and application thereof to the field of optical coupling-SCR denitration. Lanthanum nitrate, nickel nitrate, ferric nitrate, citric acid and the clay are added to deionized water to be stirred, then the mixture is transferred into a water bath kettle to evaporate to obtain wet gel, and the nano material can be obtained through drying, calcining and drying. The composite is adopted as a catalyst for photocatalytic denitration, and compared with traditional SCR denitration, the amount of adopted NH3 is reduced, and the conversion efficiency on NO at low temperature is improved.

Upconversion fluorescent nano-structured material(s) comprising at least one compound of formula (M₁)_j(M₂)_kX_n:(M₃)_q and at least one polymer, wherein: each X is the same or different and is selected from the group consisting of: halogen, O, S, Se, Te, N, P and As; each M₁, if present, is the same or different and is selected from the group consisting of: Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, O and NH₄; each M₂ is the same or different and is a metal ion; each M₃, independently, is the same or different and is selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; j is 0≦j≦10; k is 1≦k≦10; n is 1≦n≦10; and q is 1≦q≦10. In particular, the polymer is wherein the polymer soluble in polar solvents.

A device includes a support including at least a first area and a second area, and a plurality of first light emitting devices located over the first area of the support, each first light emitting device containing a first growth template including a first nanostructure, and each first light emitting device has a first peak emission wavelength. The device also includes a plurality of second light emitting devices located over the second area of the support, each second light emitting device containing a second growth template including a second nanostructure, and each second light emitting device has a second peak emission wavelength different from the first peak emission wavelength. Each first growth template differs from each second growth template.

Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.

The invention discloses a preparation method for a self-supporting metal-doped cobalt phosphide nano structure and an application of the self-supporting metal-doped cobalt phosphide nano structure as a catalytic electrode in water electrolytic hydrogen production, and belongs to the technical field of hydrogen energy and fuel cells. According to the invention, a metal element is firstly used as a doping agent for introducing cobalt phosphide, in-situ growth, on the surface of a collector, of the cobalt phosphide is realized, the catalytic activity and the structural stability are improved, the problem that a powder catalyst needs a polymer binder for being effectively fixed on the surface of the electrode is solved, and therefore, the self-supporting metal-doped cobalt phosphide nano structure is suitable for large-scale industrial hydrogen production application.

A textured article that includes a transparent substrate having at least one primary surface and a glass, glass-ceramic or ceramic composition; a micro-textured surface on the primary surface of the substrate, the micro-textured surface comprising a plurality of hillocks; and a nano-structured surface on the micro-textured surface, the nano-structured surface comprising a plurality of nano-sized protrusions or a multilayer coating comprising a plurality of layers having a nano-scale thickness. Further, the hillocks have an average height of about 10 to about 1000 nm and an average longest lateral cross-sectional dimension of about 1 to about 100 μm, and the nano-sized protrusions have an average height of about 10 to about 500 nm and an average longest lateral cross-sectional dimension of about 10 to about 500 nm. The substrate may be chemically strengthened with a compressive stress greater than about 500 MPa and a compressive depth-of-layer greater than about 15 μm.