Abstract: Three-dimensional (3D) NAND memory devices and methods are provided. In one aspect, a fabrication method for a 3D NAND memory device includes providing a substrate, forming at least one contact pad over a first portion of a face side of the substrate, forming memory cells over a second portion of the face side of the substrate, depositing a first dielectric layer to cover the at least one contact pad and the memory cells of, forming a first connecting pads over the first dielectric layer and connected to the at least one contact pad and the memory cells, bonding the first connecting pads with second connecting pads of a peripheral structure, and exposing the at least one contact pad from a back side of the substrate.

Abstract: Three-dimensional (3D) NAND memory devices and methods are provided. In one aspect, a fabrication method for a 3D NAND memory device includes providing a substrate, forming at least one contact pad over a first portion of a face side of the substrate, forming memory cells over a second portion of the face side of the substrate, depositing a first dielectric layer to cover the at least one contact pad and the memory cells of, forming a first connecting pads over the first dielectric layer and connected to the at least one contact pad and the memory cells, bonding the first connecting pads with second connecting pads of a peripheral structure, and exposing the at least one contact pad from a back side of the substrate.

Abstract: Three-dimensional (3D) NAND memory devices and methods are provided. In one aspect, a fabrication method includes providing a substrate, forming memory cells over the substrate, depositing a first dielectric layer to cover the memory cells, forming at least one contact pad over the substrate, depositing a second dielectric layer over the at least one contact pad, forming first connecting pads over the second dielectric layer, bonding the first connecting pads with second connecting pads of a peripheral structure, and exposing the at least one contact pad from a back side of the substrate.

Abstract: Three-dimensional (3D) NAND memory devices and methods are provided. In one aspect, a fabrication method includes preparing a stacked device having a first array device and a second array device, forming an opening on a back side of the second array device, and forming one or more contact pads in the opening. The first array device includes first front pads on a face side of the first array device and first back pads on a back side of the first array device. The second array device includes second front pads on a face side of the second array device and bonded with the first back pads. The one or more contact pads are disposed at a level proximate to the second front pads with respect to the first array device.

Abstract: The present disclosure provides a massaging device, which includes a flexible member, defining a first opening and a receiving cavity communicated with the first opening; and a driving assembly, configured to drive the flexible member to reciprocate. The massaging device of the present disclosure has a good massaging effect.

Abstract: An on line prediction method of part surface roughness based on SDAE-DBN algorithm. The tri-axis acceleration sensor is adsorbed on the rear bearing of the machine tool spindle through the magnetic seat to collect the vibration signals of the cutting process, and a microphone is placed in the left front of the processed part to collect the noise signals of the cutting process of the machine tool; the trend term of dynamic signal is eliminated, and the signal is smoothed; a stacked denoising autoencoder is constructed, and the greedy algorithm is used to train the network, and the extracted features are used as the input of deep belief network to train the network; the real-time vibration and noise signals in the machining process are input into the deep network after data processing, and the current surface roughness is set as output by the network.

Abstract: An apparatus and a method for preparing glow discharge sputtering samples for materials microscopic characterization are provided. The apparatus includes a glow discharge sputtering unit, a glow discharge power supply, a gas circuit automatic control unit, a spectrometer, and a computer. The structure of the glow discharge sputtering unit is optimized to be more suitable for sample preparation by simulation. By adding a magnetic field to the glow discharge plasma, uniform sample sputtering is realized within a large size range of the sample surface. The spectrometer monitors multi-element signal in a depth direction of the sample sputtering, so that precise preparation of different layer microstructures is realized. In conjunction with the acquisition of the sample position marks and the precise spatial coordinates (x, y, z) information, the correspondence between the surface space coordinates and the microstructure of the sample is conveniently realized.

Abstract: A method of determining a state of a target object, an electronic device, and a storage medium, relate to fields of a computer technology, cloud computing and Internet of things, and apply to smart cities. The method includes: receiving a transmitted first moving point sequence for the target object, the first moving point sequence including a plurality of target moving point elements, and each target moving point element containing a timestamp information and a displacement information that indicate a stay state of the target object; determining, from the first moving point sequence, a target stay point of the target object, according to the timestamp information and the displacement information; and determining that the state of the target object at the target stay point is an abnormal stay state, in response to a distance between the target stay point and a first preset position being less than a first preset threshold.

Abstract: The present disclosure provides a massaging device which includes a flexible body defining a first opening and a massaging portion communicated with the first opening, and a driving assembly configured to drive the flexible body to reciprocate and rotate simultaneously. The massaging device of the present disclosure has a good massaging effect.

Abstract: The present invention proposes an in-situ freezing machining method for an integrated thin-walled array structure. In the method, the area among cups is cut off first; then, the outer walls of a cup array are machined; and finally, water filling and freezing are carried out, and in-situ freezing machining of the inner walls of the cup array is carried out. Then, hoisting and turning over are carried out, and the area among cavities is cut off; then, the outer walls of a cavity array are machined; and finally, water filling and freezing are carried out, and in-situ freezing machining of the inner walls of the cavity array is carried out. The method realizes in-situ freezing clamping of workpieces, avoids error accumulation caused by repeated installation of a fixture, and can refrigerate efficiently, suppress ambient and cutting thermal interference, and ensure the stability of freezing fixture.

Abstract: Provided is a massage device which includes: at least one first housing, having a first sucking port and a receiving space communicated with the at least one first sucking port; at least one movable assembly, movably inserted into the receiving space; and at least one driving assembly, connected with the movable assembly and configured to drive the movable assembly to reciprocate in the receiving space to periodically generate a negative pressure and a positive pressure at the first sucking port. The massage device further includes a massage assembly and a second housing received in the at least one first housing. The at least one movable assembly is received in a first end of the second housing, and the massage assembly is received in an opposite second end of the second housing.

Abstract: The present invention proposes an in-situ freezing machining method for an integrated thin-walled array structure. In the method, the area among cups is cut off first; then, the outer walls of a cup array are machined; and finally, water filling and freezing are carried out, and in-situ freezing machining of the inner walls of the cup array is carried out. Then, hoisting and turning over are carried out, and the area among cavities is cut off; then, the outer walls of a cavity array are machined; and finally, water filling and freezing are carried out, and in-situ freezing machining of the inner walls of the cavity array is carried out. The method realizes in-situ freezing clamping of workpieces, avoids error accumulation caused by repeated installation of a fixture, and can refrigerate efficiently, suppress ambient and cutting thermal interference, and ensure the stability of freezing fixture.

Abstract: The present disclosure provides a massaging device, which includes an outer housing defining a first opening; a negative pressure generator received in the outer housing; and a driving assembly received in the outer housing, the drive assembly is configure to drive the negative pressure generator to generate alternating positive and negative pressures at the first opening. The massaging device of present disclosure has a better massaging effect.

Abstract: A prediction method of part surface roughness and tool wear based on multi-task learning belong to the file of machining technology. Firstly, the vibration signals in the machining process are collected; next, the part surface roughness and tool wear are measured, and the measured results are corresponding to the vibration signals respectively; secondly, the samples are expanded, the features are extracted and normalized; then, a multi-task prediction model based on deep belief networks (DBN) is constructed, and the part surface roughness and tool wear are taken as the output of the model, and the features are extracted as the input to establish the multi-task DBN prediction model; finally, the vibration signals are input into the multi-task prediction model to predict the surface roughness and tool wear.

Abstract: A toolholder matched with the internal jet cooling spindle for cryogenic coolant is mainly composed of a hollow toolholder body, a high-performance thermal insulation structure and a bidirectional sealing structure. They can guide the cryogenic coolant from the spindle to the internal cooling channel of cutting tool and realize the cryogenic thermal insulation and dynamic sealing. The high-performance thermal insulation structure inside the toolholder employs the material with a low thermal conductivity and a low linear expansion coefficient to restrain the low temperature impact of cryogenic coolant on the toolholder and spindle, to ensure the dimensional accuracy and assembly accuracy of the toolholder. The bidirectional sealing structure in the toolholder uses the ultra-low temperature resistant seal rings to prevent the cryogenic coolant from leaking towards the spindle and the cutting tool, to ensure the stability of the coolant transport.

Abstract: The present invention relates to a process method for conformal processing of a cylindrical shell inner weld seam by a special mobile robot, a laser scanner is used to scan a cylindrical shell inner weld seam to obtain point cloud data of a contour of a weld seam area first. Weld seam feature identification is carried out to each generatrix, and misidentified generatrices are filtered out to obtain weld seam left and right boundaries. An ideal weld seam processing contour is generated conformally according to the appearance of the weld seam area, weld seam coarse grinding is carried out after correction and compensation, and weld seam contour information after coarse grinding is obtained by scanning after the coarse grinding is completed. Process parameters of the grinding are controlled according to an actual weld seam contour, and weld seam fine grinding is carried out to obtain a smooth weld seam contour.

Abstract: Provided is a massage device which includes: at least one first housing, having a first sucking port and a receiving space communicated with the at least one first sucking port; at least one movable assembly, movably inserted into the receiving space; and at least one driving assembly, connected with the movable assembly and configured to drive the movable assembly to reciprocate in the receiving space to periodically generate a negative pressure and a positive pressure at the first sucking port.

Abstract: The massage device includes a housing; a massage unit arranged at the housing, wherein the massage unit comprises a piston, arranged inside the chamber body; and a driving device, configured to drive the piston to reciprocate inside the chamber body so as to generate negative pressure at the suction nozzle; a massage control unit, configured to control the massage unit to work; and a wireless communication unit, arranged on the housing and configured to communicate with a terminal device so as to allow the terminal device to control the massage control unit to have the massage unit to work wirelessly.

Abstract: A method of determining a state of a target object, an electronic device, and a storage medium, relate to fields of a computer technology, cloud computing and Internet of things, and apply to smart cities. The method includes: receiving a transmitted first moving point sequence for the target object, the first moving point sequence including a plurality of target moving point elements, and each target moving point element containing a timestamp information and a displacement information that indicate a stay state of the target object; determining, from the first moving point sequence, a target stay point of the target object, according to the timestamp information and the displacement information; and determining that the state of the target object at the target stay point is an abnormal stay state, in response to a distance between the target stay point and a first preset position being less than a first preset threshold.

Abstract: This invention provides a distributed energy transaction matching method based on energy network constraints and multiple knapsack model. First, it considers the matching between financial market transactions and actual energy network scheduling, then generates security constraints on the results of distributed transactions. Next, it designs a multiple knapsack model for peer-to-peer distributed transactions, which can meet the common quotation needs of users or producers who issue transactions and achieve efficient matching under energy network security checks. Finally, the model is verified based on the blockchain Ethereum smart contract test verification. This method provides new ideas for the connection between distributed energy trading and actual physical dispatch, proposes an inclusive and efficient matching model for the point-to-point distributed trading market, which has great reference value for the connection between distributed energy trading and actual conditions.