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    Fluid jet dispenser using multilayer ceramic actuators
    3.
    发明授权
    Fluid jet dispenser using multilayer ceramic actuators 有权

    公开(公告)号：US11161125B2

    公开(公告)日：2021-11-02

    申请号：US15739695

    申请日：2016-06-22

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Meysam Sharifzadeh Mirshekarloo ,  Kui Yao ,  Szu Cheng Lai ,  Chee Kiang Ivan Tan ,  Lei Zhang

    IPC: H01L41/083 ,  B05B1/08 ,  H01L41/187 ,  H02N2/04 ,  H02N2/06

    Abstract: A fluid jet dispenser using at least two multilayer piezoelectric actuators is provided. The fluid jet dispenser includes a dispensing head and an electrical driver. The dispensing head includes at least two d31-mode multilayer piezoelectric actuators, a displacement magnifying element mechanically coupled to the d31-mode multilayer piezoelectric actuators, a piston, and a nozzle. More preferably, the two d31-mode multilayer piezoelectric actuators operate in an anti-phase condition. The electrical driver is electrically coupled to the d31-mode multilayer piezoelectric actuators for displacing the actuators in directions substantially perpendicular to polarization of piezoelectric layers in the d31-mode multilayer piezoelectric actuators in response to charging and discharging of the actuators by the electrical driver, to generate a fast movement of the piston to jet a pressurized fluid out of the nozzle of the dispensing head.

    Wireless piezoelectric accelerometer and system
    4.
    发明授权
    Wireless piezoelectric accelerometer and system 有权

    公开(公告)号：US10989732B2

    公开(公告)日：2021-04-27

    申请号：US15302976

    申请日：2015-04-10

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Kui Yao ,  Zhiyuan Shen ,  Chin Yaw Tan ,  Yi Fan Chen ,  Lei Zhang

    IPC: G01P15/09 ,  G01H11/08 ,  G01P15/08 ,  H04B1/04

    Abstract: Wireless piezoelectric accelerometers and systems are provided. A wireless piezoelectric accelerometer may comprise a piezoelectric sensing element configured to sense mechanical acceleration and produce an electrical charge signal in response of the sensed mechanical acceleration, a signal processing module (SPM) configured to convert the electrical charge signal into a voltage signal, and process and digitize the voltage signal, and a wireless module configured to modulate and transmit the digitized voltage signal as wireless signals. The piezoelectric sensing element, the SPM and the wireless module are packaged in a casing. The casing comprises a metallic shielding chamber configured to enclose the piezoelectric sensing element. The casing further comprises a non-metallic portion located in relative to the wireless module to allow transmission of the wireless signals. Corresponding wireless piezoelectric accelerometer systems are also provided.

    A Vibration Control System and Related Methods
    7.
    发明申请
    A Vibration Control System and Related Methods 有权

    公开(公告)号：US20220066483A1

    公开(公告)日：2022-03-03

    申请号：US17419765

    申请日：2020-03-10

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Rogerio Salloum ,  Szu Cheng Lai ,  Kui Yao

    IPC: G05D19/02 ,  F16F15/00

    Abstract: A vibration control system includes a plurality of spatially distributed transducer elements, a switching circuit, one or more vibration control circuits, and a controller circuit. The switching circuit is connected to each of the transducer elements. The one or more vibration control circuits are configured to perform vibration control, each of the one or more vibration control circuits being connected to the switching circuit. The controller circuit is configured to control the one or more vibration control circuits and the switching circuit. The switching circuit is configured to interconnect selected ones of the transducer elements based on a switching signal provided by the controller circuit, the switching signal being in response to a vibration condition, to adaptively form a group of interconnected transducer elements. The switching circuit is further configured to connect the group of interconnected transducer elements to a selected at least one of the one or more vibration control circuits for receiving a single vibration control signal or electrical impedance source corresponding to the vibration condition.

    Systems and Methods for Monitoring Plastic Deformation of a Structured Material
    8.
    发明申请
    Systems and Methods for Monitoring Plastic Deformation of a Structured Material 审中-公开

    公开(公告)号：US20190383695A1

    公开(公告)日：2019-12-19

    申请号：US16487913

    申请日：2018-02-23

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Kui Yao ,  Shifeng Guo ,  Shuting Chen ,  Lei Zhang

    IPC: G01M5/00 ,  G01B17/04 ,  G01L1/16 ,  G01N29/04 ,  G01N29/44

    Abstract: Systems and methods for monitoring plastic deformation of a structural material are provided. An acoustic wave actuator is configured to generate acoustic wave signals to be propagated within the structural material and is in-situ fabricated on the structural material at a first location. An alternating current (AC) electric signal source drives the acoustic wave actuator to generate the acoustic wave signals at a predetermined frequency. One or more acoustic wave sensors detect the acoustic wave signals generated by the acoustic wave actuator and propagated within the structural material. More particularly, the acoustic wave detectors are configured to detect both fundamental and second harmonic acoustic signals at the predetermined frequency. The acoustic wave sensors are in-situ fabricated on the structural material at one or more second locations.

    Photo-sensor with a transparent substrate and an in-plane electrode pair
    9.
    发明授权
    Photo-sensor with a transparent substrate and an in-plane electrode pair 有权
    具有透明基板和面内电极对的光传感器

    公开(公告)号：US09423295B2

    公开(公告)日：2016-08-23

    申请号：US14261269

    申请日：2014-04-24

    Applicant: Agency for Science, Technology and Research

    Inventor： Szu Cheng Lai ,  Kui Yao ,  Yi Fan Chen ,  Yee Fun Lim

    IPC: G01J1/42 ,  H01L49/00

    CPC classification number: G01J1/42 ,  G01J1/429 ,  H01L49/00

    Abstract: According to one aspect of the invention, there is provided a photo-sensor comprising: an optically transparent substrate; an electrode pair; and a photoactive film with electrical polarization located between the optically transparent substrate and the electrode pair, wherein the optically transparent substrate is configured to transmit incident radiation received by the optically transparent substrate to the photoactive film and wherein the electrode pair is configured to receive charge carriers generated by the photoactive film in response to the transmitted incident radiation.

    Abstract translation: 根据本发明的一个方面，提供一种光传感器，包括：光学透明基板; 电极对; 以及具有位于所述光学透明基板和所述电极对之间的具有电极化的光敏膜，其中所述光学透明基板被配置为将由所述光学透明基板接收的入射辐射透射到所述光敏膜，并且其中所述电极对被配置为接收电荷载体 由光敏膜响应于所发射的入射辐射而产生。

    Piezoelectric actuator, head gimbal assembly including the same and method of forming the same
    10.
    发明授权
    Piezoelectric actuator, head gimbal assembly including the same and method of forming the same 有权
    压电致动器，头万向架组件包括相同的方法和其形成方法

    公开(公告)号：US08767355B2

    公开(公告)日：2014-07-01

    申请号：US13746961

    申请日：2013-01-22

    Applicant: Agency for Science, Technology and Research

    Inventor： Lei Zhang ,  Kui Yao ,  Charanjit Singh Bhatia

    IPC: G11B5/58

    CPC classification number: H01L41/0906 ,  G11B5/483 ,  G11B21/16 ,  H01L41/0993 ,  H01L41/18 ,  H01L41/257 ,  H01L41/338 ,  Y10T29/42

    Abstract: According to embodiments of the present invention, a piezoelectric actuator is provided. The piezoelectric actuator includes a shear mode piezoelectric material including a first arm and a second arm intersecting each other, the shear mode piezoelectric material having a polarization direction oriented at least substantially along a length of the first arm, wherein the shear mode piezoelectric material has a first surface and a second surface opposite to the first surface, the first surface and the second surface being adapted to undergo a shear displacement relative to each other along an axis at least substantially parallel to the polarization direction in response to an electric field applied between the first surface and the second surface in a direction at least substantially perpendicular to the polarization direction.

    Abstract translation: 根据本发明的实施例，提供了一种压电致动器。 压电致动器包括剪切模式压电材料，其包括彼此交叉的第一臂和第二臂，所述剪切模式压电材料具有至少基本上沿着所述第一臂的长度取向的偏振方向，其中所述剪切模式压电材料具有 第一表面和与第一表面相对的第二表面，第一表面和第二表面适于经受至少基本上平行于偏振方向的轴线相对于彼此的剪切位移，响应于施加在第一表面之间的电场 第一表面和第二表面在至少基本垂直于偏振方向的方向上。

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