Abstract: A semiconductor structure, comprising: a semiconductor substrate, a heterojunction, an in-situ insulating layer and a transition layer, which are arranged in sequence from bottom to top; a groove, passing through the in-situ insulating layer and the transition layer; and a P-type semiconductor layer, disposed in the groove and in a gate region on the transition layer, wherein the P-type semiconductor layer does not fully fill the groove. A method of manufacturing semiconductor structure is further disclosed.

Abstract: This application provides a semiconductor structure and substrate thereof, a method of manufacturing the semiconductor structure and substrate thereof. The substrate includes a plurality of unit areas, each of the unit areas includes at least two subunit areas, each of the subunit areas is provided with a groove, the groove is opened from a back side of the substrate; and in one of the unit areas, preset opening ratios of the subunit areas are different. A light-emitting layer is grown on a front side of the substrate; and in one of the unit areas, light-emitting wavelengths of the light-emitting layer in the subunit areas are different.

Abstract: A USB protocol-based IP infringement identification method for USB devices, including the following steps: S1, connecting an infringement identification device at a peer side of the USB host to be tested; S2, the USB host to be tested entering compliance mode; S3, the infringement identification device sending an X.LFPS file to the USB host to be tested; S4, upon the USB host to be tested receiving the X.LFPS file, the USB host to be tested sending IP copyright information to the infringement identification device; S5, determining whether the USB host to be tested infringes the IP. The infringement identification of the USB device to be tested is performed by using the compliance mode specified in the USB protocol, which is more stable, reliable and can also save costs.

Abstract: Disclosed are a manufacturing method for an epitaxial substrate, an epitaxial substrate, and a semiconductor structure. The manufacturing method includes: patterning a substrate to form a trench; manufacturing a transition layer in the trench, and performing crystal plane transformation processing on the transition layer based on a shape of the trench, so as to transform the transition layer into a single crystal layer, where a surface, away from the substrate, of the single crystal layer is a (111) crystal plane. Based on different shapes of the trench on the substrate, the transition layer is controlled to obtain a single crystal layer of a specific crystal plane after the crystal plane transformation processing, and a surface, away from the substrate, of the single crystal layer, is a (111) crystal plane. The (111) crystal plane of the single crystal layer facilitates subsequent epitaxial manufacturing of a semiconductor structure.

Abstract: The present application discloses a semiconductor structure including: a base, the base being made of an amorphous material and including at least one trench; a monocrystalline layer, at least part of the monocrystalline layer being provided in the trench; and an epitaxial structure layer, located on the side of the monocrystalline layer away from the base. The semiconductor structure disclosed in the present application includes the monocrystalline layer formed in the at least one trench of the base, and an amorphous material with a thermal expansion coefficient similar to that of the monocrystalline layer is selected as the base, which can relieve the tensile stress generated by the monocrystalline layer during the epitaxial process. At the same time, the epitaxial structure layer is grown on an independent monocrystalline layer, and the size is small, which alleviates the problem of semiconductor film cracking on the large-size substrate.

Abstract: An imaging system, optionally an intra-oral camera, includes a blue light source and a barrier filter over a camera sensor. Optionally, the imaging system can also take white light images. Optionally, the system includes positively charged nanoparticles with fluorescein. The fluorescent nanoparticles can be identified on an image of a tooth by machine vision or machine learning algorithms on a pixel level basis. Either white light or fluorescent images can be used, with machine learning or artificial intelligence algorithms, to score the lesions. However, the white light image is not useful for determining whether lesions, particularly ICDAS 0-2 lesions, are active or inactive. A fluorescent image, with the fluorescent nanoparticles, can be used to detect and score active lesions. Optionally using a white light image and a fluorescent image together allows for all lesions, active and inactive, to be located and scored, and for their activity to be determined.

Abstract: A vehicle power management system and a power management method thereof are provided. The power management method includes: determining, by a microcontroller, whether or not a voltage of an ignition-off signal is less than a voltage threshold when the microcontroller receives the ignition-off signal; stopping a vehicle power supply from charging a backup battery, and using the vehicle power supply to charge a back-end load; activating a counter of the microcontroller; stopping the vehicle power supply from charging the back-end load, and using the backup battery to charge the back-end load when a counting time of the counter reaches a first time threshold; sending, by the microcontroller, the ignition-off signal to the back-end load when the counting time of the counter reaches a second time threshold; and stopping the backup battery from charging the back-end load when the counting time of the counter reaches a third time threshold.

Abstract: An electronic device and a manufacturing method thereof are provided. The manufacturing method of the electronic device includes the following. A substrate is provided. A plurality of electronic units are transferred to the substrate. The electronic units are inspected to obtain M first defect maps. The M first defect maps are integrated into N second defect maps, where N<M. M repairing groups are provided according to the N second defect maps. Each of the repairing groups includes at least one repairing electronic unit. The M repairing groups are transferred to the substrate. At least two of the repairing groups have the same location distribution of repairing electronic units, and the location distribution is consistent with a defect distribution of one of the second defect maps.

Abstract: An electro-acoustical transducer device is disclosed, which includes: a hollow disk body that generally defines an axis of propagation, the hollow disk body comprising: a pair of plate members extending substantially perpendicular to the axis of propagation, each provided with a central transmitting port arranged about the axis of propagation, and a peripheral enclosure jointing the pair of plate members at the respective outer edge portions thereof, thereby defining a chamber of resonance between the pair of plate members; wherein a ring-opening about the axis of propagation that enables access to the chamber of resonance is formed between the central transmitting ports of the plate members.

Abstract: A method for making iridium oxide nanoparticles includes dissolving an iridium salt to obtain a salt-containing solution, mixing a complexing agent with the salt-containing solution to obtain a blend solution, and adding an oxidating agent to the blend solution to obtain a product mixture. A molar ratio of a complexing compound of the complexing agent to the iridium salt is controlled in a predetermined range so as to permit the product mixture to include iridium oxide nanoparticles.

Abstract: Ultrasonic measurements of fluid properties are performed with the aid of an optical fiber or a package of optical fibers by exciting ultrasound waves at a first location along the optical fiber in the fluid by means of light from the optical fiber and detecting an effect of the ultrasound waves on light reflection or propagation in the optical fiber and/or a further optical fiber in the package at a second location along the optical fiber or at the end of the optical fiber.

Abstract: The present disclosure provides a voltage reference source circuit for generating a reference voltage, the voltage reference source circuit comprises a starting circuit, a current generating circuit, and an output voltage reference circuit electrically connected in sequence. The starting circuit provides a starting voltage for the voltage reference source circuit to prevent the voltage reference source circuit from operating in zero state area. The current generating circuit generates a working current for the output voltage reference circuit; and the output voltage reference circuit is used to realize the reference voltage output with zero temperature coefficient according to the working current output by the current generating circuit. A low power consumption power supply system is also disclosed.

Abstract: The present disclosure provides a method for preparing a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors, the composition prepared by the method, and use of the composition for treating arthritis. The composition of the present disclosure achieves the effect of treating arthritis through various efficacy experiments.

Abstract: A meniscus tear assisted determination system includes an image capturing device and a processor. The image capturing device is for capturing a target protocol of a subject, and the target protocol includes a plurality of target knee joint image sequences. The processor is signally connected to the image capturing device and includes a data preprocessing module and a meniscus tear assisted determination program. The data preprocessing module is for grouping the plurality of target knee joint image sequences and extracting a plurality of target coronal plane image sequences and a plurality of target sagittal plane image sequences. The meniscus tear assisted determination program includes a meniscus location detector and a meniscus tear predictor.

Abstract: A channel hiatus correction method for an HDMI device is provided. A recovery code from scrambled data of the stream is obtained. A liner feedback shift register (LFSR) value of channels of the HDMI port is obtained based on the recovery code and the scrambled data of the stream. The stream is de-scrambled according to the LFSR value of the channels of the HDMI port. Video data is displayed according to the de-scrambled stream.

Abstract: The present invention provides a “living” radical polymerization method for a vinyl monomer by near-infrared photothermal conversion. The method comprises irradiating a reactor with near-infrared light of 750-850 nm, wherein the reactor has a first chamber and a second chamber that are isolated from each other, the first chamber contains an organic solution of a near-infrared light responsive croconaine dye, and the second chamber is provided with a closed reaction flask containing a reaction solution, the reaction solution comprises a vinyl monomer, two or more of an ATRP initiator, an ATRP ligand, an ATRP catalyst, an RAFT reagent, a thermal initiator, and an additive, and an organic solvent; and the near-infrared light responsive dye converts the near-infrared light into heat energy, by which the reactor is heated to 50-100° C. to polymerize the monomer in the reaction solution, to obtain polymers with controlled molecular weights and molecular weight distributions.

Abstract: Disclosed is a semiconductor structure. The semiconductor structure includes: a multiple quantum well layer including a quantum barrier layer and a quantum well layer which are alternately arranged; and a protective layer formed on the quantum well layer, where the protective layer is made of an oxygen-doped nitride material. In the present disclosure, the presence of the oxygen-doped protective layer may achieve a longer luminous wavelengths through an InGaN quantum well material with a lower In component.

Abstract: The present disclosure provides a method for treating liver cirrhosis by using a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors. The composition of the present disclosure achieves the effect of treating liver cirrhosis through various efficacy experiments.

Abstract: Disclosed are an image display method and a 3d display system. The method is adapted to the 3d display system including a 3d display device and includes the following steps. A first image and a second image are obtained by splitting an input image according to a 3d image format. Whether the input image is a 3D format image complying with the 3D image format is determined through a stereo matching processing performed on the first image and the second image. An image interweaving process is enabled to be performed on the input image to generate an interweaving image in response to determining that the input image is the 3D format image complying with the 3D image format, and the interweaving image is displayed via the 3D display device.

Abstract: Disclosed are a semiconductor structure and a preparation method thereof. The semiconductor structure comprises a first nitride semiconductor layer, a second nitride semiconductor layer formed on the first nitride semiconductor layer, and a third nitride semiconductor layer formed on the second nitride semiconductor layer with a groove penetrating through the third nitride layer. In the present disclosure, by etching the groove on the third nitride semiconductor layer of P-type doping, and then secondarily extending selectively a N-type doped source region in the groove, the sharp P-N interface formed between the third nitride semiconductor layer and the second nitride semiconductor layer can further help control the shape of the groove, reduce the on-resistance and improve the breakdown voltage of the semiconductor structure.