A parallel analog circuit optimization method based on genetic algorithm and machine learning

    公开(公告)号:US20230092630A1

    公开(公告)日:2023-03-23

    申请号:US16957998

    申请日:2019-11-13

    摘要: A parallel analog circuit automatic optimization method based on genetic algorithm and machine learning comprises global optimization based on genetic algorithm and local optimization based on machine learning, with the global optimization and the local optimization performed alternately. The global optimization based on genetic algorithm utilizes parallel SPICE simulations to improve the optimization efficiency while guaranteeing the optimization accuracy, combined with parallel computing. The local optimization based on machine learning establishes a machine learning model near the global optimal point obtained by the global optimization, and uses the machine learning model to replace the SPICE simulator, thus reducing the time costs brought by a large number of simulations.

    Tuning method for active metamaterials using IGZO Schottky diodes

    公开(公告)号:US20220278241A1

    公开(公告)日:2022-09-01

    申请号:US17753192

    申请日:2020-06-28

    摘要: A tuning method for active metamaterials using IGZO Schottky diodes, wherein the IGZO Schottky diode comprises a substrate, a Schottky electrode, amorphous IGZO active layer, and an ohmic electrode from the bottom up. The method comprises steps as follows: (1) Metamaterials are used as the Schottky electrodes, and amorphous IGZO active layers are used to fully cover the capacitive gap structures in the metamaterials; such capacitive structures in the metamaterials are bonded to the amorphous IGZO active layers to form Shottky barriers; (2) The resulting IGZO Schottky diodes from step (1) are used to tune the metamaterials dynamically.

    THIOPHENE[2,3-D]PYRIMIDINE DERIVATIVE DK6-1 AND ITS PREPARATION METHOD AND APPLICATION

    公开(公告)号:US20230067045A1

    公开(公告)日:2023-03-02

    申请号:US17757821

    申请日:2020-03-03

    IPC分类号: C07D495/04 A61P31/18

    摘要: The present invention belongs to the field of pharmaceutical technology, specifically disclosing a class of thienopyrimidine compounds with the general formula I, theirs stereoisomeric forms, stereoisomeric mixtures and pharmaceutically acceptable salts, hydrates and solvents. Also including theirs polycrystalline and eutectic, prodrugs and derivatives with same biologically functional, methods for their preparation, and compositions containing one or more of these compounds in the drugs application of treatment and prevention of human immunodeficiency virus (HIV).

    Parametric light generation method and its application

    公开(公告)号:US11762261B2

    公开(公告)日:2023-09-19

    申请号:US17445785

    申请日:2021-08-24

    摘要: The invention is related to a parametric light generation method and its application and belongs to the technical field of laser and nonlinear optics. The generation method comprises steps as follows: a nonlinear optical material that meets the sum-frequency phase-matched conditions, namely it shall satisfy the energy conservation condition ωp+ωi=ωs and the momentum conservation condition npωp+niωi=nsωs simultaneously, is provided; laser light with a wavelength of λp is injected into the said nonlinear optical material as pump light; then, the material will output signal light with a wavelength of λS, namely the tunable sum-frequency parametric light. With sum-frequency as the basic principle, the invention can realize frequency up-conversion and obtain visible and UV light sources through simple infrared light sources easily.