112 results about "Metallic nanostructures" patented technology

A heat pipe with a nanostructured wick is disclosed, with the method of forming the nanostructured wick on a metal substrate. The wicking material is a pattern of metallic nanostructures in the form of bristles or nanowires attached to a substrate, where the bristles are substantially freestanding.

The method is intended for obtaining nanosize amorphous particles, which find use in various fields of science and technology; in particular, metallic nanostructures can be regarded as a promising material for creating new sensors and electronic and optoelectronic devices and for developing new types of highly selective solid catalysts. The method for obtaining nanoparticles includes the following stages: dispersion of a molten material; supply of the resulting liquid drops of this material into a plasma with parameters satisfying the aforementioned relationships, which is formed in an inert gas at a pressure of 10−4-10−1 Pa; cooling of liquid nanoparticles formed in the said plasma to their hardening; and deposition of the resulting solid nanoparticles onto a support.

The present invention refers to an electrode comprised of a first layer which comprises a mesoporous nanostructured hydrophobic material; and a second layer which comprises a mesoporous nanostructured hydrophilic material arranged on the first layer. In a further aspect, the present invention refers to an electrode comprised of a single layer which comprises a mixture of a mesoporous nanostructured hydrophobic material and a mesoporous nanostructured hydrophilic material; or a single layer comprised of a porous nanostructured material wherein the porous nanostructured material comprises metallic nanostructures which are bound to the surface of the porous nanostructured material. The present invention further refers to the manufacture of these electrodes and their use in metal-air batteries, supercapacitors and fuel cells.

The present disclosure concerns a means to use at least a form of electromagnetic excitation or light-matter interactions in a structure or material having one or more addressable frequencies to generate the exchange of thermal, kinetic, electronic or photonic energy. In some implementations this provides a means to use electromagnetic excitation or light-matter interactions to influence, cause, control, modulate, stimulate or change the state or phase of electrical, magnetic, optical or electromagnetic charge, emission, conduction, storage or similar properties. The method could include the use of light-matter interactions to generate electromagnetic excitation or light-matter interactions and concentrate extremely localized field effects or concentrated plasmonic field effects to cause an exchange of energy states in a material or structure. Said field effects could be used for excitation of surface electrons in metallic nanostructures causing said electrons to exchange energy states or said field effects could be used to mediate or stimulate photon emissions or to modulate photonic energy to excite or stimulate emissions of electrons. Said electron or photon emissions could be used to drive photochemical, photocatalysis, photovoltaic or thermophotovoltaic reactions.

The invention provides method for metallic nanonstructures self-assembly methods and materials testing. Preferred embodiment methods permit for the formation of individual nanonstructures and arrays of nanostructrues. The nanostructures formed can have a metal alloy crystal structure. Example structures include slender wires, rectangular bars, or plate-like structures. Tips can be shaped, single layer and multiple layer coatings can be formed, tips can be functionalized, molecules can be adhered, and many testing methods are enabled.

The invention discloses a preparation method of three crescent structural arrays including a crescent nanometer metal disc array, a crescent nanometer metal disc structural array supported by silicon columns and crescent scattered nanometer metal particles and the like. The preparation method of the crescent nanometer metal disc array includes technical steps of preparing a single ordered polystyrene nanometer ball dense array layer and a single ordered nanometer polystyrene ball non-dense array layer, depositing metal, preparing a metal nanometer round hole array, preparing a crescent mask hole array made of composite materials and the crescent nanometer metal disc array and the like; then etching the crescent nanometer metal disc array which is used as a mask to prepare the crescent nanometer metal disc structural array supported by the silicon columns and corroding the crescent nanometer metal disc array to prepare the scattered crescent nanometer metal particles. The preparation method is high in universality and adaptability, fine in compatibility, high in efficiency and low in cost and capable of bringing convenience for research of the crescent nanometer metal structures.

The invention discloses a novel metal cup-cylinder composite nano structure array which is formed by sequential arrangement of metal nano structure array units. The metal nano structure array units are of a metal cup-cylinder composite nano structure which comprises a cup-shaped metal nano outer wall, and the center of a cup groove formed by the metal nano outer wall is a cylindrical metal nano particle. The invention also discloses a preparation method of the metal nano structure array, and the preparation method comprises the processing steps of preparing a single-layer orderly polrvinyl benzene nano ball compact arrangement, preparing a single-layer orderly polrvinyl benzene nano ball non-compact arrangement, preparing a nano annular-structure array mask made of composite materials, preparing a silicon-nano-structure array template, preparing the metal cup-cylinder composite nano-structure array, and the like. The metal nano array structure provided by the invention has gaps with smaller nano sizes and can be used for realizing the Roman detection of a single biomolecule; and according to the preparation method, the compatibility is good, the efficiency is high and the cost is low.

Methods and systems for the super-resolution imaging can make visible strongly subwavelength feature sizes (even below 100 nm) in the optical images of biomedical or any nanoscale structures. The main application of the proposed methods and systems is related to label-free imaging where biological or other objects are not stained with fluorescent dye molecules or with fluorophores. This label-free microscopy is more challenging as compared to fluorescent microscopy because of the poor optical contrast of images of objects with subwavelength dimensions. However, these methods and systems are also applicable to fluorescent imaging. Their use is extremely simple, and it is based on application of the microspheres or microcylinders or, alternatively, elastomeric slabs with embedded microspheres or microcylinders to the objects which are deposited on the surfaces covered with thin metallic layers or metallic nanostructures. The mechanism of imaging involved use of the plasmonic near-fields for illuminating the objects and virtual imaging of these objects through microspheres or microcylinders. These methods and systems do not require use of fragile probe tips and slow point-by-point scanning techniques. These methods and systems can be used in conjunction with any types of microscopes including upright, inverted, fluorescence, confocal, phase-contrast, total internal reflection and others. Scanning the samples can be performed using micromanipulation with individual spheres or cylinders or using translation of the slabs. These methods and systems are applicable to dry, wet and totally liquid-immersed samples and structures.

An amplifier optical fiber comprising a central core of a dielectric matrix doped with at least one element ensuring the amplification of an optical signal transmitted in the fiber and a cladding surrounding the central core and suitable for confining the optical signal transmitted in the core. The fiber also comprises metallic nanostructures suitable for generating an electronic surface resonance in the dielectric matrix of central core, the wavelength of said electronic surface resonance corresponding to an excitation level of the element ensuring the amplification.

A method for forming a silicon substrate having a multiple silicon nanostructures includes the steps of: providing a silicon substrate; forming an oxidization layer on the silicon substrate; immersing the silicon substrate in a fluoride solution including metal ions, thereby depositing a plurality of metal nanostructures on the silicon substrate; and immersing the silicon substrate in an etching solution to etch the silicon under the metal nanostructures, the unetched silicon forming the silicon nano structures.

A nano-structured optical wavelength transmission filter is provided. The optical filter includes a patterned substrate on which a high refractive index dielectric waveguide is arranged. A low index dielectric layer is arranged on the high refractive index dielectric waveguide, on which an array of metallic nanostructures is arranged. The layers of the optical filter have conformal shapes defined by a patterned surface of the substrate. An optical filter system includes the optical transmission filter and a detector array fixed to the substrate. A spectrometer includes at least one optical transmission filter and / or at least one said optical transmission filter system, and has a spectral resolution of lower than 30 nm for incident light having a wavelength between 300 nm and 790 nm. A method of fabrication of an optical filter, an optical filter system and a spectrometer is also described.

Crystalline noble metal nanostructures and methods for their preparation.

The invention discloses a Raman enhancement detection method and a Raman enhancement detection device for a micro LED chip. According to the detection method provided by the invention, photoluminescence detection and Raman detection are combined, the photoluminescence detection provides luminescence wavelength and brightness information, and the Raman detection provides electrical properties, so that the problem of insufficient photoluminescence detection accuracy is solved; electron energy level resonance and surface plasmon resonance enhanced Raman technologies are adopted, so that the Ramanscattering intensity is enhanced by 103 to 108, part of the Raman scattering intensity reaches the photoluminescence intensity, and a foundation is laid for rapid measurement; the metal nanostructurenot only improves the luminous efficiency of the micro LED chip, but also can enhance Raman scattering signals by using surface plasmon, so that the detection speed is increased; microscopic Raman detection is a nondestructive testing means, the detection process is simple, the required time is short, the detection speed is high, the micro LED chip does not need to be specially treated, and the method is suitable for massive detection of the micro LED chip.

The disclosure relates to metallic nanophotonic crescent structures, or “nanocrescent SERS probes,” that enhance detectable signals to facilitate molecular detections. More particularly, the nanocrescent SERS probes of the disclosure possess specialized geometries, including an edge surrounding the opening that is capable of enhancing local electromagnetic fields. Nanosystems utilizing such structures are particularly useful in the medical field for detecting rare molecular targets, biomolecular cellular imaging, and in molecular medicine.

The invention discloses a core-shell structured silica @ mesoporous silica supported gold nanoparticle microbead and a preparation method of the same, relates to the gold nanoparticle microbead and the preparation method of the same, and aims at solving the technical problem of poor quality of Raman spectrum of the existing metal nano structure. The core-shell structured silica @ mesoporous silica supported gold nanoparticle microbead is composed of a core layer and a shell layer. The preparation method comprises the following steps of: preparing small silica nanoparticle; preparing silica nano seeds; preparing core-shell structured silica @ mesoporous silica nanoparticle sol solution; preparing silica @ mesoporous silica nanoparticle; preparing silica @ mesoporous silica nanoparticle of which the shell layer comprises amino groups; preparing the core-shell structured silica @ mesoporous silica supported gold nanoparticle; and preparing the core-shell structured silica @ mesoporous silica supported gold nanoparticle microbead. The microbead prepared by the method is controllable in size and appearance, high in stability and capable of effectively enhancing the Raman spectrum.

The invention relates to self-assembly preparation of a one-dimensional nano-structure. According to the self-assembly preparation, (1) precious metal nano-particles are synthesized in an aqueous solution system according to the liquid phase synthesis method; (2) the obtained precious metal nano-particles are dispersed in a mixed solution of inorganic salt and alcohol; (3) a certain amount of an alkaline solution such as an ethanol solution of ammonium hydroxide is taken and added to the mixed solution, the mixed solution is stirred for a certain time and centrifuged, and therefore the metal nano-structure which is of a self-assembly chain shape is obtained. According to the self-assembly preparation of the one-dimensional nano-structure, the one-dimensional chain-shaped nano-structure with different particle sizes can be assembled, any template does not needed, the assembly process is simple and easy to control, separation is easy, a preparation system is environmentally friendly, no toxic and harmful solution is added, the technologies in the preparation process and the assembly process are simple, the preparation cost is low, a solution system is low in price, the application range is wide, and the one-dimensional nano-structure is easy to prepare in a large scale.

A method for fabricating one-dimensional metallic nanostructures comprises steps: sputtering a conductive film on a flexible substrate to form a conductive substrate; placing the conductive substrate in an electrolytic solution, and undertaking electrochemical deposition to form one-dimensional metallic nanostructures corresponding to the conductive film on the conductive substrate. The method fabricates high-surface-area one-dimensional metallic nanostructures on a flexible substrate, exempted from the high price of the photolithographic method, the complicated process of the hard template method, the varied characteristic and non-uniform coating of the seed-mediated growth method.

The present invention is concerned with a plasmonic enhanced tandem dye sensitized solar cell system. The system has plasmonic nanostructures integrated to both a photoanode and a photocathode for enhancing respective electron and hole carrier transfer.

The invention discloses a nano-structure electrode for an energy storage device and a pseudocapacitor having the electrode. The nano-structure electrode has mutually-conductive and mutually-connected metal-nano-structure leading-out electrodes, wherein the surface of each leading-out electrode is wrapped with an active layer. The nano-structure electrode is also provided with a modification layer, wherein the modification layer is arranged between the surface of each leading-out electrode and each active layer. Each leading-out electrode is a metal nanowire, of which the diameter is 5 nm-500 nm, and the length is larger than 5 mum. The thickness of the active layer is 1 nm-1000 nm. The active layer is formed by stacking one or more layer of son active layers, wherein the son active layers are made of any one of transition metal oxide, conductive polymer or composite pseudocapacitor materials. The modification layer is formed by stacking one or more layer of son modification layers, wherein the son modification layers are made of metal oxide, metal nitride or metal fluoride. The nano-structure electrode has the advantage of large surface area, and the pseudocapacitor having the nano-structure electrode with the structure above is large in capacity.

The present invention relates to analyte detection devices and methods of using such devices to detect minute quantities of a target analyte in a sample. In particular, the invention provides a method of detecting a target analyte in a sample comprising mixing the sample with a first detection conjugate and a second detection conjugate in solution, wherein the first and second detection conjugates comprise metallic nanostructures coupled to binding partners that are capable of specifically binding to the target analyte if present in the sample to form a complex between the first detection conjugate, the analyte, and the second detection conjugate, wherein a change in an optical signal upon complex formation indicates the presence of the target analyte in the sample. Methods of preparing nanostructures and nanoalloys, as well as nanostructures and nanoalloys conjugated to binding partners, are also described.

The present invention relates to analyte detection devices and methods of using such devices to detect minute quantities of a target analyte in a sample. In particular, the invention provides a method of detecting a target analyte in a sample comprising mixing the sample with a first detection conjugate and a second detection conjugate in solution, wherein the first and second detection conjugates comprise metallic nanostructures coupled to binding partners that are capable of specifically binding to the target analyte if present in the sample to form a complex between the first detection conjugate, the analyte, and the second detection conjugate, wherein a change in an optical signal upon complex formation indicates the presence of the target analyte in the sample. Methods of preparing nanostructures and nanoalloys, as well as nanostructures and nanoalloys conjugated to binding partners, are also described.

Nanocomposites in accordance with many embodiments of the invention can be capable of converting electromagnetic radiation to an electric signal, such as signals in the form of current or voltage. In some embodiments, metallic nanostructures are integrated with graphene material to form a metallo-graphene nanocomposite. Graphene is a material that has been explored for broadband and ultrafast photodetection applications because of its distinct optical and electronic characteristics. However, the low optical absorption and the short carrier lifetime of graphene can limit its use in many applications. Nanocomposites in accordance with various embodiments of the invention integrates metallic nanostructures, such as (but not limited to) plasmonic nanoantennas and metallic nanoparticles, with a graphene-based material to form metallo-graphene nanostructures that can offer high responsivity, ultrafast temporal responses, and broadband operation in a variety of optoelectronic applications.

The invention provides method for metallic nanonstructures self-assembly methods and materials testing. Preferred embodiment methods permit for the formation of individual nanostructures and arrays of nanostructures. The nanostructures formed can have a metal alloy crystal structure. Example structures include slender wires, rectangular bars, or plate-like structures. Tips can be shaped, single layer and multiple layer coatings can be formed, tips can be functionalized, molecules can be adhered, and many testing methods are enabled.

The invention belongs to the technical field of biosensors and specifically relates to a fluorescence enhanced type aptamer sensor as well as a preparation method and application thereof. A metal nanostructure is guided into a fluorescent molecular detection system, aptamer for modifying a certain amount of basic groups A is combined with metal nanoparticles through sulfydryl, and plasma resonancegenerated by the metal nanoparticles is utilized to improve fluorophore excitation efficiency; thus, fluorescent radiation amplitude is remarkably improved, and the purpose of amplifying fluorescencesignals is achieved. Meanwhile, the fluorescence enhanced type aptamer sensor which is used for detecting low-concentration target objects is provided by being combined with specificity selection ofaptamer, so that flexibility, accuracy and specificity of analysis detection are ensured, and detection of polyphyly of the target object is also achieved. Meanwhile, the fluorescence enhanced type aptamer sensor has the characteristics of low cost, no pollution and wider detection range.

Inorganic oxides, particularly silica or germania or inorganic oxides containing silica and / or germania, are imprinted with one or a plurality of functional moieties such as amine and / or thiol groups by a process featuring incorporating such groups into the oxide by use of a thermally labile material containing a protecting group for the amine or thiol, followed by removal of the thermally labile moiety by thermolysis. The resulting products are inorganic oxide substrates or bulk inorganic oxides imprinted with the functional moieties. A plurality of such moieties may be imprinted on a substrate in an order fashion using a polymeric imprinting compound, and may then be used as a templated array of functional moieties to which ordered metallic nanostructures may be constructed.

Methods and systems for the super-resolution imaging can make visible strongly subwavelength feature sizes (even below 100 nm) in the optical images of biomedical or any nanoscale structures. The main application of the proposed methods and systems is related to label-free imaging where biological or other objects are not stained with fluorescent dye molecules or with fluorophores. This label-free microscopy is more challenging as compared to fluorescent microscopy because of the poor optical contrast of images of objects with subwavelength dimensions. However, these methods and systems are also applicable to fluorescent imaging. Their use is extremely simple, and it is based on application of the microspheres or microcylinders or, alternatively, elastomeric slabs with embedded microspheres or microcylinders to the objects which are deposited on the surfaces covered with thin metallic layers or metallic nanostructures. The mechanism of imaging involved use of the plasmonic near-fields for illuminating the objects and virtual imaging of these objects through microspheres or microcylinders. These methods and systems do not require use of fragile probe tips and slow point-by-point scanning techniques. These methods and systems can be used in conjunction with any types of microscopes including upright, inverted, fluorescence, confocal, phase-contrast, total internal reflection and others. Scanning the samples can be performed using micromanipulation with individual spheres or cylinders or using translation of the slabs. These methods and systems are applicable to dry, wet and totally liquid-immersed samples and structures.

The invention discloses a cheap disorder broad-spectrum wide-angle antireflection structure and a manufacturing method thereof. The manufacturing method comprises the steps of: s1, depositing a dielectric film on the surface of a substrate material (or structure); s2, forming a metal colloid film on the surface of the dielectric film; s3, heating the metal colloid film to obtain a metal nano structure; s4, etching the dielectric film by taking the metal nano structure as a mask to form the antireflection structure; s5, and removing the metal nano structure. The dielectric nano structure manufacturing scheme provided by the invention is simple and practicable, can achieve large-area manufacturing, only needs low temperature, and is low in manufacturing energy consumption and high in efficiency. In addition, the manufactured disorder dielectric nano structure and the residual metal mask can obtain excellent broad-spectrum wide-angle antireflection effect.

Nanolithographic deposition of metallic nanostructures using coated tips for use in microelectronics, catalysis, and diagnostics. AFM tips can be coated with metallic precursors and the precursors patterned on substrates. The patterned precursors can be converted to the metallic state with application of heat. High resolution and excellent alignment can be achieved.