Abstract: The invention provides an electrochemical discharge-assisted micro-grinding device for micro-components of brittle and hard materials. The device includes a micro-grinding tool, grinding fluid, a workpiece, an auxiliary electrode, a processing groove, and a pulsed DC power supply; the processing groove is filled with grinding fluid; the micro-grinding tool, the workpiece, and the auxiliary electrode are immersed in the grinding fluid; the micro-grinding tool is composed of a conductive grinding tool base, an electroplating layer, and insulated superabrasives. The micro-grinding tool is connected to the negative electrode of the pulsed DC power supply; the grinding fluid is composed of H2O2, Na2CO3, EDTA-Fe-Na, and deionized water; the workpiece material is brittle and hard; a large number of micro structures need to be produced on the surface of the workpiece.

Abstract: A data processing method and apparatus are described. The data processing apparatus obtains an input tensor corresponding to input data. The data processing apparatus determines M1 first-type tensor blocks and M2 second-type tensor blocks. P processing units in the data processing apparatus process the M tensor blocks concurrently. In a first time period, all of the tensor blocks that are processed concurrently by the P processing units are first-type tensor blocks. In a second time period, all of the tensor blocks that are processed concurrently by the P processing units are second-type tensor blocks.

Abstract: The present invention relates to the technical field of composite materials, and in particular to a fiber composite material and a preparation method thereof. The preparation method comprises: A) uniformly dispersing nanoparticles in a solvent to obtain a nanoparticle dispersion; B) uniformly spray-coating the nanoparticle dispersion on a chopped fiber nonwoven fabric, and drying the fabric to obtain a nano-modified chopped fiber nonwoven fabric; C) intercalating the nano-modified chopped fiber nonwoven fabric between fiber preforms, and subjecting the obtained material and a resin matrix to composite molding by a molding process to obtain a fiber composite material. In the present invention, firstly nanoparticles are uniformly dispersed in a solvent to obtain a nanoparticle dispersion; secondly, the chopped fiber and the nanoparticles cooperate to construct a multi-scale interlaminar toughening phase, which significantly improves the interlaminar fracture toughness of the fiber composite material.

Abstract: A plasma-facing component of a fusion reactor divertor, including an inner target transition support and a dome transition support which are integrated into an inner target-dome transition support. The inner target-dome transition support and an outer horizontal target transition support are each prepared from two materials. The channel connection inside the inner target-dome transition support and the outer horizontal target transition support is realized through an S-shaped flow channel and a collector box. In V-shaped regions of inner and outer targets, a plasma-facing unit is connected to the collector box in the transition support via a bending tube, and is communicated with a coolant flowing through horizontal and vertical targets through an intermediate flow channel in the transition block. A method of preparing the plasma-facing component is further provided.

Abstract: A method for preparing a bifunctional film, including: (a) drying a first polymer solution to form a film to form an anti-adhesion layer, and (b) drying a second polymer solution over the anti-adhesion layer to form a film to form an attachment layer. The first polymer solution includes a first hydrophobic solution and a first hydrophilic solution, and in the first polymer solution, the weight ratio of the solute of the first hydrophobic solution to the solute of the first hydrophilic solution is 1:0.01-1. Moreover, the second polymer solution is composed of a second hydrophilic solution.

Abstract: A bulk acoustic wave (BAW) resonator includes a substrate, a stack over the substrate and including a piezoelectric layer disposed between two electrode layers, and one or more edge frames. The one or more edge frames can be a raised metal frame extending parallel to a periphery of an active region of the stack and has one or more slanted cuts such that the edge frame does not form a closed loop and loss of acoustic energy in the active region through the one or more cuts is reduced, minimized or prevented. Alternatively or additionally, the one or more edge frames include a recessed edge frame in the form of a trench in the piezoelectric layer extending parallel to a boundary of the active region, and may further include a second edge frame formed on the first electrode and embedded in the piezoelectric layer.

Abstract: The present disclosure provides a displacement detection circuit of a maglev rotor system and a displacement self-sensing system thereof.

Abstract: The present disclosure relates to operations research and optimization methods, apparatuses, and computing devices One example method includes obtaining a hyperparameter of an operations research and optimization algorithm based on a feature of data of a current application scenario and a hyperparameter inference model. Optimization calculation is performed on the data of the current application scenario, according to the operations research and optimization algorithm and based on the obtained hyperparameter of the operations research and optimization algorithm, to obtain a calculation result, where the hyperparameter inference model is obtained through dynamic training based on training data obtained in a historical application scenario and training data obtained in the current application scenario.

Abstract: A method of forming a capacitor is disclosed. The method includes forming a portion of a metallization layer on a substrate, forming a via layer on the substrate, and forming a first electrode between the metallization layer and the via layer, where the first electrode is electrically connected to the metallization layer. The method also includes forming a second electrode between the metallization layer and the via layer, where the second electrode is electrically connected to the via layer, and forming a dielectric layer between the first electrode and the second electrode, where the first electrode is not electrically connected to any other conductors other than through the metallization layer, and where the second electrode is not electrically connected to any conductors other than through the via layer.

Abstract: Devices and processes for preparing devices are described for a bulk acoustic wave resonator. A stack includes a first electrode that is coupled to a first side of a piezoelectric layer and a second electrode that is coupled to a second side of the piezoelectric layer. The stack is configured to resonate in response to an electrical signal applied between the first electrode and the second electrode. A cavity frame is coupled to the first electrode and to the substrate. The cavity frame forms a perimeter around a cavity. Optionally, a heat dissipating frame is formed and coupled to the second electrode. The cavity frame and/or the heat dissipating frame improve the thermal stability of the bulk acoustic resonator.

Abstract: The present disclosure provides a displacement detection circuit of a maglev rotor system and a displacement self-sensing system thereof.

Abstract: A method for preparing a bifunctional film, including: (a) drying a first polymer solution to form a film to form an anti-adhesion layer, and (b) drying a second polymer solution over the anti-adhesion layer to form a film to form an attachment layer. The first polymer solution includes a first hydrophobic solution and a first hydrophilic solution, and in the first polymer solution, the weight ratio of the solute of the first hydrophobic solution to the solute of the first hydrophilic solution is 1:0.01-1. Moreover, the second polymer solution is composed of a second hydrophilic solution.

Abstract: A method for preparing a bifunctional film, including: (a) drying a first polymer solution to form a film to form an anti-adhesion layer; and (b) drying a second polymer solution over the anti-adhesion layer to form a film to form an attachment layer. The first polymer solution includes a first hydrophobic solution and a first hydrophilic solution, and in the first polymer solution, the weight ratio of the solute of the first hydrophobic solution to the solute of the first hydrophilic solution is 1:0.01-1. Moreover, the second polymer solution consists of a second hydrophilic solution.

Abstract: A data processing method and apparatus are described. The data processing apparatus obtains an input tensor corresponding to input data. The data processing apparatus determines M1 first-type tensor blocks and M2 second-type tensor blocks. P processing units in the data processing apparatus process the M tensor blocks concurrently. In a first time period, all of the tensor blocks that are processed concurrently by the P processing units are first-type tensor blocks. In a second time period, all of the tensor blocks that are processed concurrently by the P processing units are second-type tensor blocks.

Abstract: Devices and processes for preparing devices are described for a bulk acoustic wave resonator. A stack formed over a substrate includes a piezoelectric film element, a first (e.g., bottom) electrode coupled to a first side of the piezoelectric film element, and a second (e.g., top) electrode that is coupled to a second side of the piezoelectric film element. A cavity is positioned between the stack and the substrate. The resonator includes one or more planarizing layers, including a first planarizing layer around the cavity, wherein a first portion of the first electrode is adjacent the cavity and a second portion of the first electrode is adjacent the first planarizing layer. The resonator optionally includes an air reflector around the perimeter of the piezoelectric film element. The stack is configured to resonate in response to an electrical signal applied between the first electrode and the second electrode.

Abstract: A bulk acoustic wave (BAW) resonator includes a substrate, a stack over the substrate and including a piezoelectric layer disposed between two electrode layers, and one or more edge frames. The one or more edge frames can be a raised metal frame extending parallel to a periphery of an active region of the stack and has one or more slanted cuts such that the edge frame does not form a closed loop and loss of acoustic energy in the active region through the one or more cuts is reduced, minimized or prevented. Alternatively or additionally, the one or more edge frames include a recessed edge frame in the form of a trench in the piezoelectric layer extending parallel to a boundary of the active region, and may further include a second edge frame formed on the first electrode and embedded in the piezoelectric layer.

Abstract: A method for preparing a bifunctional film, including: (a) drying a first polymer solution to form a film to form an anti-adhesion layer; and (b) drying a second polymer solution over the anti-adhesion layer to form a film to form an attachment layer. The first polymer solution includes a first hydrophobic solution and a first hydrophilic solution, and in the first polymer solution, the weight ratio of the solute of the first hydrophobic solution to the solute of the first hydrophilic solution 1:0.01-1. Moreover, the second polymer solution consists of a second hydrophilic solution.

Abstract: Devices and processes for preparing devices are described for a bulk acoustic wave resonator. A stack includes a first electrode that is coupled to a first side of a piezoelectric layer and a second electrode that is coupled to a second side of the piezoelectric layer. The stack is configured to resonate in response to an electrical signal applied between the first electrode and the second electrode. A cavity frame is coupled to the first electrode and to the substrate. The cavity frame forms a perimeter around a cavity. Optionally, a heat dissipating frame is formed and coupled to the second electrode. The cavity frame and/or the heat dissipating frame improve the thermal stability of the bulk acoustic resonator.

Abstract: A stator for the rotary electric machine including an outer yoke, an inner yoke and a plurality of coils is provided. The inner yoke is coaxially held within the outer yoke, and includes a plurality of teeth and a plurality of slots. The teeth are extending from the center of the stator radially and alternately. The slots are configured between the neighboring teeth. The coils are wound on the teeth respectively to provide a gap between the neighboring coils wherein the gap comprises a gap area equal to or less than 20% of a slot area. Therefore, the stator for the rotary electric machine provides higher torque and the motor efficiency by increasing the coil area factor.

Abstract: The present disclosure provides a film composed of a polymer mixture, wherein the polymer mixture includes: a hydrophobic composition including polycaprolactone (PCL); and at least one hydrophilic polymer selected from a group consisting of alginate, gelatin, hyaluronic acid, polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), polyethylene glycol (PEG), collagen, demineralized bone matrix (DBM), bone morphogenetic protein (BMP), albumin, chitosan, fibrin, polyoxyethylene, polyvinylpyrrolidone, wherein the weight ratio of the hydrophobic composition to the hydrophilic polymer is about 1:0.01-100, and wherein the film has the effect of preventing leakage from a surgical wound or a diffuse wound.