ANISOTROPIC PIEZOELECTRIC DEVICE, SYSTEM, AND METHOD

    公开(公告)号:US20200006623A1

    公开(公告)日:2020-01-02

    申请号:US16567286

    申请日:2019-09-11

    IPC分类号: H01L41/193 H01L41/316

    摘要: A micro electromechanical (mem) device includes a first electrode, a second electrode, and a shaped carbon nanotube with a first end and a second end. The first end of the shaped carbon nanotube is conductively connected to the first electrode and the second end is conductively connected to the second electrode. A system for making the device includes a plurality of electrodes placed outside the growth region of a furnace to produce a controlled, time-varying electric field. A controller for the system is connected to a power supply to deliver controlled voltages to the electrodes to produce the electric field. A mixture of gases is passed through the furnace with the temperature raised to cause chemical vapor deposition (CVD) of carbon on a catalyst. The sequentially time-varying electric field parameterizes a growing nanotube into a predetermined shape.

    Haptic actuator having a smart material actuation component and an electromagnet actuation component

    公开(公告)号:US10409376B2

    公开(公告)日:2019-09-10

    申请号:US15724751

    申请日:2017-10-04

    摘要: A haptic actuator comprising a first actuation component and a second actuation component is presented. The first actuation component comprises a first layer of actuatable material and electrodes on opposite sides of the first layer, wherein the actuatable material is configured to deform upon any electrical signal being applied to at least one of the electrodes. The haptic actuator further comprises a second layer separated from the first actuation component by one or more spacers. The second actuation component comprises a magnetized material and one or more electromagnets. Either the magnetized material or the one or more electromagnets are disposed on the first actuation component, and relative movement between the magnetized material and the one or more electromagnets is generated upon any electrical signal being applied to the one or more electromagnets, wherein the relative movement causes vibration of the first actuation component.