摘要:
A domain engineered relaxor-PT single crystals having a dielectric loss of about 0.2%, a high electromechanical coupling factor greater than about 85%, and high mechanical quality factor greater than about 500 is disclosed. In one embodiment, the relaxor-PT material has the general formula, Pb(B1B2)O3—Pb(B3)O3, where B1 may be one ion or combination of Mg2+, Zn2+, Ni2+, Sc3+, In3+, Yb3+, B2 may be one ion or combination of Nb5+, Ta5+, W6+, and B3 may be Ti4+ or combination of Ti4+ with Zr4+ and/or Hf4+.
摘要:
The application is directed to piezoelectric single crystals having shear piezoelectric coefficients with enhanced temperature and/or electric field stability. These piezoelectric single crystal may be used, among other things, for vibration sensors as well as low frequency, compact sonar transducers with improved and/or enhanced performance.
摘要:
The application is directed to piezoelectric single crystals having shear piezoelectric coefficients with enhanced temperature and/or electric field stability. These piezoelectric single crystal may be used, among other things, for vibration sensors as well as low frequency, compact sonar transducers with improved and/or enhanced performance.
摘要:
A ternary single crystal relaxor piezoelectric grown from a novel melt using the Vertical Bridgeman method. The ternary single crystals are characterized by a Curie temperature, Tc, of at least 150° C. and a rhombohedral to tetragonal phase transition temperature, Trt, of at least about 110° C. The ternary crystals further exhibit a piezoelectric coefficient, d33, in the range of at least about 1200-2000 pC/N.
摘要:
A magnetic field-modulated transverse flux multiphase permanent magnet motor consisting of a stator and a rotor. A number m of phase armature units are arranged in a row along the axial direction within a motor housing (1); each successive phase armature unit is offset in the circumferential direction by an electrical angle of 360°/m; the armature coil (2) is embedded within an annular cavity between the first to the third stator iron core tooth segments (3, 4, 5); the external circumferential surfaces of the first and the third rotor iron core tooth segments (6, 8) are respectively grooved in the axial direction with k/2 permanent magnet slots; the rotor permanent magnet slot on the first rotor iron core tooth segment (6) is axially offset from the rotor permanent magnet slot on the third rotor iron core tooth segment (8) by one-half the rotor tooth pitch; the direction of magnetization of the rotor permanent magnets (9) is identical. The present motor features high reliability and high security, high fault tolerance, structural simplicity, low costs, high torque density, good dynamic characteristics and ease of modularization.
摘要:
The present technique relates to an image processing device, an image processing method, a program, and a recording medium that enable more accurate block noise correction without degradation of image quality.A motion predicting unit detects, from a criteria image and a reference image, the motion vector of each of blocks constituting an image. A motion compensating unit generates a motion-compensated image by performing motion compensation on the reference image, using the motion vectors. A correction value calculating unit calculates a correction value for correcting the pixel value of a current pixel in a current block in the motion-compensated image based on a boundary difference value between the criteria image and the motion-compensated image, the boundary difference value being a difference value with respect to the pixel value of a boundary pixel in a boundary portion adjacent to an adjacent block in the current block. An adding unit adds the correction value to the pixel value of the current pixel in the motion-compensated image. The present technique can be applied to image processing devices.
摘要:
A method of making a transistor, comprising: providing a semiconductor substrate; forming a gate stack over the semiconductor substrate; forming an insulating layer over the semiconductor substrate; forming a depleting layer over the insulating layer; etching the depleting layer and the insulating layer; forming a metal layer over the semiconductor substrate; performing thermal annealing; and removing the metal layer. As advantages of the present invention, an upper outside part of each of the sidewalls include a material that can react with the metal layer, so that metal on two sides of the sidewalls is absorbed during the annealing process, preventing the metal from diffusing toward the semiconductor layer, and ensuring that the formed Schottky junctions can be ultra-thin and uniform, and have controllable and suppressed lateral growth.
摘要:
A system and method for extracting a skeleton topology structure for an electric power grid, the method comprising: receiving a description of a topology sub-structure corresponding with user's need and a description of skeleton topology sub-structure extracted from the topology sub-structure; generating a first incidence matrix based on the description of the topology sub-structure and a second incidence matrix based on the description of the skeleton topology sub-structure; generating a third incidence matrix based on a primary topology structure of electric power grid; searching from the third incidence matrix a sub-matrix that matches the first incidence matrix; obtaining a fourth incidence matrix by using the second incidence matrix to transform the matching sub-matrix; and generating a skeleton topology structure corresponding to the primary topology structure based on the fourth incidence matrix.
摘要:
A method for manufacturing a semiconductor device is disclosed, comprising: providing a substrate, a gate region on the substrate and a semiconductor region at both sides of the gate region; forming sacrificial spacers, which cover a portion of the semiconductor region, on sidewalls of the gate region; forming a metal layer on a portion of the semiconductor region outside the sacrificial spacers and on the gate region; removing the sacrificial spacers; performing annealing so that the metal layer reacts with the semiconductor region to form a metal-semiconductor compound layer on the semiconductor region; and removing unreacted metal layer. By separating the metal layer from the channel and the gate region of the device with the thickness of the sacrificial spacers, the effect of metal layer diffusion on the channel and the gate region is reduced and performance of the device is improved.
摘要:
A semiconductor device structure and a method for manufacturing the same are disclosed. In one embodiment, the method comprises: forming a fin in a first direction on a semiconductor substrate; forming a gate line in a second direction crossing the first direction on the semiconductor substrate, the gate line intersecting the fin via a gate dielectric layer; forming a dielectric spacer surrounding the gate line; forming a conductive spacer surrounding the dielectric spacer; and performing inter-device electrical isolation at a predetermined region, wherein isolated portions of the gate line form gate electrodes of respective unit devices, and isolated portions of the conductive spacer form contacts of the respective unit devices.