23results about "Electroforming nanostructures" patented technology

A hyperbolic metamaterial is provided. The hyperbolic metamaterial includes a substrate and sub-wavelength nanostructures arrayed on the substrate. Each sub-wavelength nanostructure has a decreasing cross-sectional area with increasing height from the substrate and includes dielectric or semi-metallic material layers and metal-insulator transition (MIT) material layers respectively interleaved with the dielectric or semi-metallic material layers. Each MIT material layer and each dielectric or semi-metallic material layer of each sub- wavelength nanostructure has a cross-sectional shape characterized in that current is induced in one or both of the dielectric or semi-metallic material layers and the MIT material layers by exposure to a magnetic field.

Provided is a fine metal linear body having a lower sintering temperature than the conventional one. The fine metal linear body has a length of 0.5-200 µm and a thickness of 30 nm or more and 10 µm or less. Where the length of a metal crystal constituting the fine metal linear body along the extension direction of the fine metal linear body is denoted by X and the length along the direction orthogonal to said direction is denoted by Y, the value of X / Y, which is the ratio of X to Y, is 4 or less at three points in boundary regions obtained when the length of the fine metal linear body is divided into four equal parts along the extension direction thereof.

The present invention relates to a method for preparing magnetic nickel tapered nanowires, comprising the following steps: (1) irradiating and sensitizing a polymer template with a latent track by a fast heavy ion beam; (2) sputtering a gold conductive layer on one side of the polymer template with the latent track, and then depositing a copper conductive layer on the surface of the gold conductive layer by electrochemical deposition; (3) etching the side of the polymer template with the latent track without the gold-copper conductive layer using an etching solution to obtain a polymer template with tapered linear channels; (4) electrochemically depositing magnetic nickel tapered nanowires on the side of the polymer template with the tapered linear channels without the gold-copper conductive layer; and (5) stripping the gold-copper conductive layer to obtain the magnetic nickel tapered nanowires. The present invention is simple and efficient, and for the first time achieves the controllable preparation of magnetic nickel tapered nanowire arrays, successfully preparing small-sized magnetic nickel tapered nanowire arrays with excellent microwave absorption performance.

A system for fabricating anisotropic magnetic nanowire composites includes a chamber for containing an ionic fluid. A hole in a wall of the chamber allows for the ionic fluid to be in contact with a porous template outside of the chamber, and a cathode and an anode provide an electric field across the ionic fluid and porous template. The electric field causes ionic materials in the ionic fluid to migrate into the pores of the porous template, therefore plating nanowires in the porous template. Constant distances and positions of the anode, cathode, a reference probe, and a stirring element allow for the fabrication of longer, more uniform nanowires, and for the generation of consistent magnetic nanowire composites across multiple fabrication sessions.

The present invention discloses a super-hydrophobic high-efficiency condensation heat transfer nano-interface and a preparation method thereof. The super-hydrophobic high-efficiency condensation heat transfer nano-interface is composed of a metal nanowire array, the metal nanowires in the metal nanowire array are connected laterally to avoid local collapse, and there are no microcavity defects formed by the collapse or agglomeration of the metal nanowires inside; the preparation of the metal nanowire array is achieved by a metal nano-electrodeposition process using an anodic aluminum oxide nanopore template with controllable nano-scale side pore distribution, and the material of the metal nanowires includes any one of copper, nickel, gold, and silver or a combination of two or more; the super-hydrophobic high-efficiency condensation heat transfer nano-interface is given low-viscosity super-hydrophobic properties through low-surface energy chemical modification. The preparation process provided by the present invention is simple and controllable, and the super-hydrophobic high-efficiency condensation heat transfer nano-interface developed based on this process has excellent water vapor penetration resistance, condensation droplet fusion self-ejection removal and high-efficiency condensation heat transfer functions under steam conditions.

The invention relates to a method of providing a plurality of nanowires (14) on a surface (15), comprising: a) providing an electrolyte dispenser (1); b) providing a foil (16) having a plurality of continuous holes (17); c) arranging the foil (16) between the surface (15) and an outlet side (4) of the electrolyte dispenser (1); d) introducing a liquid electrolyte into the electrolyte dispenser (1) such that the liquid electrolyte is deposited onto the foil (16) at the outlet side (4) of the electrolyte dispenser (1); and e) applying a voltage between the liquid electrolyte and the surface (15) such that the nanowires (14) grow from the liquid electrolyte in the holes (17) of the foil (16) onto the surface (15).

Method for electroplating a plurality of nanowires (1) onto an electrically conductive surface (2), comprising a) Placing a film (3) on the surface (2), wherein the film (3) has a plurality of continuous pores (4), b) Placing an elastic element (7) permeable to a first electrolyte (5) onto the film (3), wherein the first electrolyte (5) is brought into contact with the film (3) via the elastic element (7), c) for a first growth period, electroplating of the plurality of nanowires (1) by deposition from the first electrolyte (5) into the pores (4) of the film (3), while the surface (2) is located in a first growth zone (8), wherein the elastic element (7) is pressed against the film (3) by a pressure device (10) arranged in the first growth zone (8), d) Lifting the elastic element (7) from the film (3), and e) for a second growth period, continuing the galvanic growth of the plurality of nanowires (1) by deposition from the first electrolyte (5) or from a second electrolyte (6) into the pores (4) of the film (3), while the surface (2) is located in a second growth zone (9) different from the first growth zone (8).

A method for producing a nano- or micro-sheet element is provided, the nano- or micro-sheet element particularly being made of graphene and / or other sheet-materials. The method is based on a laminate (14) comprising a growth substrate (1), a nano- or micro-sheet layer (2) and a support layer (3). The nano- or micro-sheet layer (2) is adapted to form the nano- or micro-sheet element. The method comprises at least the step of electrochemical delamination of the laminate (14) by means of electrolysis in such a way, that the growth substrate (1) is separated from the nano- or micro-sheet layer (2) and the support layer (3). The step of electrochemical delamination of the laminate (14) is carried out with the support layer (3) having a pattern (31) with a plurality of local depressions (311) and / or elevations (312).

A method of electroplating nanograined copper on a substrate includes: providing the substrate; providing an electroplating bath that includes a copper salt, an acid, a leveler, a chlorine compound, an accelerator, a suppressor; and water; and electroplating the substrate in the electroplating bath to form the nanograined copper at room temperature. The suppressor is a ployether polyol compound, the nanograined copper has an average grain size of about 100 nm, and the nanograined copper has a resistivity of about 1.78-1.90 μOhm·cm. A nanograined copper prepared according to the method is also disclosed.

This invention relates to a femtosecond laser deposition probe and a micro / nano localized deposition device based on a femtosecond laser, which relates to the field of nanofabrication, specifically to the field of surface metallization process equipment technology and the field of probe technology used in this process. It solves the problems of existing probes being unable to simultaneously excite electrochemical reactions and conduct laser light, and the high optical path transmission loss in existing deposition devices. The probe comprises multiple parallel single-mode silica optical fibers, each fiber having a tapered end and its outer surface covered with a metal layer. The laser emitted by the femtosecond laser transmission system in the deposition device is guided by the fiber probe (301) to the surface metallization processing area within the movable reaction pool system (4), and the end of the fiber probe (301) also serves as the working electrode for the chemical reaction within the movable reaction pool system (4). The femtosecond laser deposition probe is suitable for systems combining laser and chemical reactions.

The present disclosure relates to a method for manufacturing a palm trunk-like hierarchical nanostructure and a palm trunk-like hierarchical nanostructure manufactured thereby. Specifically, the palm trunk-like hierarchical nanostructure according to the present disclosure demonstrates high specificity and sensitivity for glucose when glucose oxidase is immobilized on the surface thereof, with excellent reproducibility and stability, thus finding advantageous applications as biosensors.

The invention relates to a method for galvanically growing a plurality of nanowires (1) on an electrically conductive surface (2), comprising a) placing a film (3) on the surface (2), wherein the film (3) has a plurality of continuous pores (4), b) placing an elastic element (7), which is permeable to a first electrolyte (5), on the film (3), wherein the first electrolyte (5) is brought into contact with the film (3) via the elastic element (7), c) for a first growth period, galvanically growing the plurality of nanowires (1) via deposition from the first electrolyte (5) into the pores (4) of the film (3), while the surface is in a first growth zone (8), wherein the elastic element (7) is pressed against the film (3) by means of a pressing device (10) arranged in the first growth zone (8), d) lifting the elastic element (7) from the film (3), and e) for a second growth period, continuing the galvanic growth of the plurality of nanowires (1) via deposition from the first electrolyte (5) or from a second electrolyte (6) into the pores (4) of the film (3), while the surface (2) is in a second growth zone (9) different from the first growth zone (8).

Method for producing a plurality of nanowires (1) on an electrically conductive surface (2), comprising: a) applying a masking layer (3) to the surface (2), wherein the masking layer (3) has multiple recesses (4) in which the surface (2) is uncovered by the masking layer (3), b) applying a respective foil piece (5) to the surface (2) in each of the recesses (4), wherein the foil pieces (5) each have a plurality of pores (6) extending continuously over a thickness (dF) of the respective foil piece (5), c) growing the nanowires (1) onto the surface (2) into the pores (6) of the foil pieces (5).

Disclosed herein is a method for fabricating a nanowire array on an uneven or curved surface. A pliable, porous scaffold is used to hold a liquid electrolyte, creating s semi-solid electrolyte that is used to transfer pressure to a template disposed on the target surface to cause the template to conform to and bond with the target surface to substantially eliminate the gap therebetween, such that a robust and controllable growth of the nanowire array can be realized.

The present invention provides a method for preparing a nano-sheet or micro-sheet element based on a laminate (14), the nano-sheet or micro-sheet being made of graphene and / or other sheet-like material. The laminate (14) comprises a growth substrate (1), a nano-sheet or micro-sheet layer (2) and a carrier layer (3). The nanosheet or microsheet layer (2) is adapted to form the nanosheet element or microsheet element. The method comprises at least a step of electrochemical delamination of the laminate (14) by electrolysis such that the growth substrate (1) is separated from the nano-or micro-sheet layer (2) and the carrier layer (3). The electrochemical delamination step of the laminate (14) is carried out by means of a carrier layer (3) having a pattern (31) with a plurality of local depressions (311) and / or elevations (312).

The invention discloses a femtosecond laser plating probe and a micro-nano localized deposition device based on femtosecond laser, and relates to the field of nano manufacturing, in particular to the technical field of surface metallization process equipment and the technical field of probes used in the process. The problems that an existing probe cannot excite electrochemical reaction and conduct laser at the same time, and an existing deposition device is large in light path conduction loss are solved. The probe comprises a plurality of parallel single-mode quartz optical fibers, the tail end of each optical fiber is conical, and the outer surface of each optical fiber is covered with a metal layer. Laser emitted by a femtosecond laser transmission system in the deposition device is guided to a surface metallization processing area in a movable reaction tank system (4) through an optical fiber probe (301), and the tail end of the optical fiber probe (301) also serves as a working electrode for chemical reaction in the movable reaction tank system (4). The femtosecond laser plating probe is suitable for a laser and chemical reaction combined system.

A fine metal linear body is provided in which the sintering temperature is lower than that in conventional examples. The fine metal linear body has a length of 0.5 to 200 μm and a thickness of 30 nm to 10 μm. When a length of a crystal of a metal constituting the fine metal linear body, in a direction in which the fine metal linear body extends, is taken as X, and a length thereof in a direction orthogonal to the direction is taken as Y, an X / Y value, which is a ratio of the X to the Y, is 4 or less, in three boundary regions when dividing the length of the fine metal linear body into four equal parts along the extending direction.

A metal foam-based filtration system and method for removing sub-micron particles and contaminants from a gas or fluid flow with the use of ultralow density metal nanowire meshes that have nanometer to micron scale pores for trapping air / fluid-borne particulates. Filters can use metal foams and coated metal foams alone or in tandem. The size and density of pores in the foam can be adjusted with synthesis conditions. Foams with pore size gradients promote the trapping of different sized particulates at different regions of a foam. Multiple rounds of electrodeposition may be applied to increase the surface area and curvature of a nanowire mesh and strengthen the mesh to make it self-supporting, free-standing and capable of supporting a much heavier mass without collapse. A metal and / or a coated metal foam can act as a catalyst or substrate for absorption or adsorption to capture target particles and / or contaminants.

This invention provides a fine metal wire with a lower sintering temperature than previously possible. The fine metal wire has a length of 0.5 μm or more and 200 μm or less, and a thickness of 30 nm or more and 10 μm or less. When the length of the metal crystal constituting the fine metal wire along the extension direction of the fine metal wire is defined as X, and the length along a direction orthogonal to the extension direction is defined as Y, at three boundary regions where the length of the fine metal wire is divided into four equal parts along its extension direction, the ratio of X to Y, i.e., X / Y, is 4 or less.

A hyperbolic metamaterial is provided. The hyperbolic metamaterial includes a substrate and sub-wavelength nanostructures arrayed on the substrate. Each sub-wavelength nanostructure has a decreasing cross-sectional area with increasing height from the substrate and includes dielectric or semi-metallic material layers and metal-insulator transition (MIT) material layers respectively interleaved with the dielectric or semi-metallic material layers. Each MIT material layer and each dielectric or semi-metallic material layer of each sub-wavelength nanostructure has a cross-sectional shape characterized in that current is induced in one or both of the dielectric or semi-metallic material layers and the MIT material layers by exposure to a magnetic field.

A method for manufacturing a nanowire array on a surface having irregularities or a curved surface is disclosed herein. A flexible porous scaffold is used to hold a liquid electrolyte and create a semi-solid electrolyte that is used to transfer pressure to a template placed on a target surface. By aligning and adhering the template to the target surface to substantially remove the voids therebetween, robust and controllable growth of the nanowire array can be achieved.

The present invention addresses the problem of providing a method for manufacturing a structure capable of achieving excellent placement stability when used as an anisotropic conductive bonding member. This method for manufacturing a structure is a method for manufacturing a structure having an insulating substrate formed of an inorganic material and a plurality of conductive paths formed of conductive members penetrating the insulating substrate in the thickness direction thereof and provided so as to be insulated from each other, and is characterized in that each conductive path has a protruding portion protruding from the surface of the insulating substrate. The method includes a protruding step of forming a protruding portion by being in contact with a composition containing an organic acid.

A low cost and highly controllable roll-to-roll templated deposition method for manufacturing nanostructured thin films, comprising: creating a stack structure, the stacked structure comprises a conductive substrate, a porous template arranged on the substrate, an ion conducting layer which is arranged on the template and is formed by a porous bracket containing electrolyte or polymer gel, and an anode arranged on the ion conducting layer, providing a roll on the anode; applying pressure to the stacking structure through the roller, so that the first porous template is attached to the substrate and remains attached to the substrate; applying a galvanic potential between the metal anode and the conductive substrate to grow nanostructures from the substrate into the porous template by electrochemical deposition; and removing the porous template by chemical dissolution or chemical etching to obtain the nanostructure film. A tubular roll radially including a tube, an electrolyte, and an anode may replace the roll, the electrolyte, and the anode. The nanostructure films can also grow on the two sides of the substrate.