Abstract: The present invention provides a piezoelectric film acoustic resonator, which comprises a substrate, a first electrode disposed over the substrate, a piezoelectric film disposed over the substrate and covering at least a portion of the first electrode and a second electrode disposed on a surface of the piezoelectric film away from the first electrode, one end of the first electrode extends in the direction away from the piezoelectric film to form a first extended pad, one end of the second electrode extends in the direction away from the first extended pad to form a second extended pad, the first extended pad comprises a first protruding reflection grating on the surface away from the substrate, the second extended pad comprises a second protruding reflection grating on the surface away from the substrate. The configuration can reduce the impact on acoustic performance while improving the quality factor.

Abstract: A memory circuit comprises a signal buffer, a plurality of switch circuits, a temperature sensor, a path-length-compensation circuit and at least one data latch. The signal buffer is configured to receive a strobe signal. The plurality of switch circuits are coupled to the signal buffer through a plurality of signal paths respectively, wherein the lengths of the plurality of signal paths are equal. The temperature sensor is coupled to the plurality of switch circuits and configured to conduct one of the plurality of switch circuits according to temperature of the memory circuit. The path-length-compensation circuit comprises a plurality of input terminals connected in series, which are configured to respectively receive outputs of the plurality of switch circuits. The at least one data latch is coupled to an output terminal of the path-length-compensation circuit and configured to store or output data according to output of the path-length-compensation circuit.

Abstract: The present disclosure provides a piezoelectric resonator comprising a substrate having an acoustic reflection mirror, a bottom electrode stacked on the substrate, a piezoelectric layer disposed on the substrate and covering the bottom electrode, and a top electrode stacked on a surface of piezoelectric layer distal to the bottom electrode. An overlapping portion of the acoustic reflection mirror, the bottom electrode, the piezoelectric layer, and the top electrode along a thickness direction of the piezoelectric resonator is a resonance region. A sidewall of the top electrode or a bottom electrode recesses to form a recessing portion. The recessing portion does not extend to an upper surface or a lower surface of the top electrode or the bottom electrode.

Abstract: The present application provides a film bulk acoustic resonator, including a substrate, an acoustic reflection structure arranged on one side of the substrate, a bottom electrode stacked on one side of the acoustic reflection structure, a piezoelectric film covered on the bottom electrode and a top electrode stacked on a side of the piezoelectric film away from the bottom electrode. An interdigital protrusion frame is provided on a side of the top electrode away from the piezoelectric film, and the interdigital protrusion frame includes a first protrusion frame and a second protrusion frame arranged at intervals. The first protrusion frame and the second protrusion frame respectively extend toward each other and overlap each other to form at least a pair of interdigital structures, and each of the interdigital structures includes two forks spaced apart by a preset distance along an overlapping direction.

Abstract: A method for determining a centerline of a blood vessel in an image associated with a subject is provided. The method includes obtaining a centerline model used for identifying a centerline of a blood vessel and identifying the centerline of the blood vessel based on the centerline model.

Abstract: A full-duplex transceiver includes a dual-polarized antenna, a dual-mode waveguide circulator, and at least a receiver port and a transmitter port. The dual-polarized antenna is configured to transmit first electromagnetic waves polarized by the dual-polarized antenna according to a first polarization, and receive second electromagnetic waves polarized according to a second polarization orthogonal to the first polarization. In response to electromagnetic waves being received at the transmitter port, the waveguide circulator guides a TE10 mode of the electromagnetic waves to the antenna for coupling the TE10 mode of the electromagnetic waves to the antenna and polarizing the electromagnetic waves according to the first polarization to form the first electromagnetic waves. In response to the second electromagnetic waves being received at the antenna, the waveguide circulator couples a TE20 mode of the second electromagnetic waves and guides the TE20 mode of the second electromagnetic waves to the receiver port.

Abstract: A module has a transmitter (Tx) antenna and a receiver (Rx) antenna. At least one of the Tx and Rx antennas has a leaky-wave antenna (LWA) array for transmitting or receiving one or more signal beams with a range resolution and an angle resolution. The LWA array has a plurality of LWAs configured as a filter bank. By using the filter bank based LWAs, the LWA array may coherently stitch or combine the individual spectrums of the LWAs to have a wide frequency-space coverage for providing improved range and/or angle resolutions.

Abstract: A superhydrophobic self-luminous concrete material for 3D printing and a method for preparing the same, belonging to the field of building materials. The superhydrophobic self-luminous concrete includes: cement: 1000-1500 parts; quartz sand: 1000-1300 parts; silica fume: 50-100 parts; water: 300-400 parts; water reducing agent: 8-12 parts; cellulose ether: 1-2 parts; defoamer: 2-3 parts; fiber: 4-8 parts; luminous powder: 75-85 parts; reflective powder: 30-45 parts; metakaolin: 15-25 parts; metal filler: 0.015-0.040 parts; and a superhydrophobic coating. By combining 3D printing with the superhydrophobic self-luminous concrete material, the characteristics of energy saving, environment friendliness, high efficiency and low consumption of the 3D printing are highlighted, and the superhydrophobic self-luminous concrete material can be utilized to efficiently prepare fine and special-shaped components.

Abstract: A system for wireless power transfer (WPT) is described. The WPT system may be used for charging of electric vehicles or other mobile platforms. The WPT system includes a gap waveguide base including a conductive waveguiding structure and a bandgap structure along at least the lateral sides of the waveguiding structure. The WPT system also includes a charging plate separate from the gap waveguide base. The charging plate includes a conductive plate having a receiving structure for receiving the electromagnetic field from the gap waveguide base through an air gap. The disclosed WPT system enables propagation of an electromagnetic field through the air gap, including electromagnetic fields in the very high frequency (VHF) band.

Abstract: A cable detection robot and a working method thereof, wherein the cable detection robot includes: a first main body, a second main body, and a rotatable mechanism. The first main body and the second main body each include a support, a driving apparatus, and a holding apparatus; the driving apparatus includes a first wheel and a driving motor, to drive the first wheel to move along a cable through the driving motor; the holding apparatus is symmetrically arranged on two sides of the support, each side includes a first servo motor, connecting to a supporting wheel group; the supporting wheel group is perpendicular to a surface of the cable, the holding apparatus holds or is separated from the cable through rotation of the first servo motor, and relative positions of the first main body and the second main body are adjusted through the rotatable mechanism to implement obstacle surmounting.

Abstract: An intelligent vehicle capturing apparatus for a high-pier bridge includes: a double-layer metal protective net; and a support unit and an actuation unit connected to the double-layer metal protective net. The double-layer metal protective net is mounted to a backside of the high-pier bridge through the support unit. The actuation unit includes a hydraulic link mechanism. The hydraulic link mechanism is connected to one end of the double-layer metal protective net. The hydraulic link mechanism is moved to unwind the double-layer metal protective net on the backside of the high-pier bridge to capture a vehicle. In this way, the apparatus stops and buffers a vehicle that is about to rush out of a high-pier bridge.

Abstract: An acoustic resonator and a manufacture method thereof. The acoustic resonator includes: a substrate having cavities; piezoelectric units one by one corresponding to the cavities, the piezoelectric units cover the cavities, and each piezoelectric unit includes a first electrode layer, a piezoelectric layer and a second electrode layer sequentially stacked from bottom to top; a protective layer stacked on the piezoelectric unit; a series unit having one end electrically connected to the first electrode layer of one of the piezoelectric units, and the other end electrically connected to the second electrode layer of another one of the piezoelectric units, so as to connect the two piezoelectric units in series. Compared with the 10 related art, the piezoelectric unit is protected from further risk of damages in subsequent manufacturing processes by providing a protective layer on the piezoelectric unit, so that the acoustic resonator has better Q value and coupling coefficient.

Abstract: The method for fabricating a FBAR provided according to the present invention includes providing a substrate, forming a dielectric material layer on a surface of the substrate away from the substrate, forming a bottom electrode on a surface of the dielectric material layer away from the substrate, forming a piezoelectric material layer on a surface of the bottom electrode away from the substrate, forming an intermediate metal layer on a surface of the piezoelectric material layer away from the substrate, forming a mass load layer on a surface of the intermediate metal layer away from the substrate, and forming a top electrode on a surface of the mass load layer away from the substrate. In this way, process choices are increased, and flexibility in multiple mass load formation of the FBAR below top electrode and in a filter having the FBARs are increased, thereby improving sensitivity in the filter.

Abstract: Prostamide-containing biodegradable intraocular implants, prostamide compounds, prostamide-containing pharmaceutical compositions, and methods for making and using such implants and compositions for the immediate and sustained reduction of intraocular pressure and treatment of glaucoma in an eye of a patient are described.

Abstract: An electronic device, a memory device of the electronic device, and a write leveling method of the memory device are provided. The memory device is coupled to a memory controller to receive a data strobe signal DQS and a clock signal CLK. In a write leveling mode, the memory device provides a write leveling function to the memory controller, where the write leveling function includes a plurality of iterative operations. In each of the iterative operations, the memory controller sends a notification to the memory device, and the memory device sets up a strobe window based on the notification. The memory device samples the clock signal CLK based on a phase of the data strobe signal DQS in the strobe window, so as to send a sampling result back to the memory controller. The memory device is prohibited from sampling the clock signal CLK outside the strobe window.

Abstract: The present disclosure provides a piezoelectric resonator, including a bottom electrode, a piezoelectric layer formed on a side of the bottom electrode, a top electrode formed on a side of the piezoelectric layer away from the bottom electrode, an acoustic wave reflection structure formed on a side of bottom electrode away from piezoelectric layer, an insertion layer, and a mass load. The top electrode, piezoelectric layer, bottom electrode, and acoustic wave reflection structure form a resonant region. The insertion layer is formed on a side of top electrode away from piezoelectric layer and/or on the side of bottom electrode away from piezoelectric layer, and at least partially covers the resonant region. The mass load is formed on a side of the insertion layer away from piezoelectric layer, and is at least partially formed in the resonant region. The piezoelectric resonator has high performance, lower process difficulty, higher manufacturability and yield.

Abstract: Methods are provided that implement tagmentation for single-molecule sequencing use 90-99% less input than current protocols: SMRT-Tag, which allows detection of genetic variation and CpG methylation, and SAMOSA-Tag, which uses exogenous adenine methylation to add a third channel for probing chromatin accessibility. SAMOSA-Tag of 30,000-50,000 nuclei resolved single-fiber chromatin structure, CTCF binding, and DNA methylation in patient-derived prostate cancer xenografts and uncovered metastasis-associated global epigenome disorganization.

Abstract: Methods of using the alpha-2-adrenergic receptor agonist of Formula I: for improving vision such as in the treatment of ocular conditions such as presbyopia, poor night vision, visual glare, visual starbursts, visual halos, and some forms of myopia (e.g. night myopia) are described.