SYSTEMS AND METHODS FOR MICRO-CANTILEVER ACTUATION BY BASE EXCITATION

    公开(公告)号:US20180201497A1

    公开(公告)日:2018-07-19

    申请号:US15744575

    申请日:2016-07-13

    IPC分类号: B81B3/00 B81B7/02 F03G7/06

    摘要: A system and methods for base excitation of moderately high vibration of micro-cantilevers are disclosed. A micro-cantilever may be coupled to one or more actuators adjacent its base. The actuators may comprise bulk materials, bridges, or formed wires that expand and contract by application of electric currents, due to, for example, the effect of electro-thermal heating or piezoelectric effects. Single actuators or an array of actuators may be placed around the micro-cantilever to oscillate it and apply actuation pulses. The system and methods, and adjustments of the geometrical parameters, may be performed to yield a nominal natural frequency in the system. The excitation of actuators with signals corresponding to the natural frequency may induce resonance in the system and may result in high amplitude vibrations and displacement of the cantilever tip of the micro-cantilever. Various architectures of the actuators may be implemented to stimulate different frequencies of the beam and induce displacement in different direction and amplitudes.

    MICRO-BOLOMETER HAVING AN ADJUSTABLE DYNAMIC RANGE

    公开(公告)号:US20170203955A1

    公开(公告)日:2017-07-20

    申请号:US15324892

    申请日:2015-07-09

    发明人: Daniel GRAYBEAL

    IPC分类号: B81B3/00 G01J5/40

    CPC分类号: B81B3/0024 G01J5/40

    摘要: In some aspects the present invention embodies both the method and apparatus for converting a pattern of irradiation to a visible image. An embodiment of the present invention provides an array of micro-electro-mechanical sensors with each sensor includes a deflectable micro-cantilever, responsive to absorbed incident radiation and to an applied repulsive electrostatic field. Associated circuitry senses a change in an output signal of the sensor as it responds to incident radiation incident upon the cantilever and provides a biasing force to deflect the cantilever and maintain the detector output signal at a desirable level. The biasing element may be a piezoelectric element, a heater or a pair of electrodes and the corresponding biasing stimulus may be stress (expansion), heat, or electrostatic change. The stimulus compensates for the effect of the infrared radiation and maintains the chosen detector output level at the same level.

    MEMS DEVICE
    7.
    发明申请
    MEMS DEVICE 审中-公开
    MEMS器件

    公开(公告)号:US20160062076A1

    公开(公告)日:2016-03-03

    申请号:US14784802

    申请日:2014-04-21

    摘要: The disclosure provides a MEMS device including: a fixed substrate having a cavity; a driving unit disposed in the cavity and floating above the fixed substrate; and an elastic unit for physically connecting the fixed substrate with the driving unit and varying the height of the driving unit according to a control current, wherein the elastic unit includes a bimorph driving unit connected to the fixed substrate and bent according to the control current, a spring connected to the driving unit, and a frame connecting the bimorph driving unit to the spring. Therefore, in order to overcome the limitations according to the power consumption and the size-reduction due to a coil and a magnet, the MEMS device drives one lens and thus can reduce the power consumption and the size thereof. Further, the MEMS device applies a thermal scheme which performs an automatic focusing function through vertical operation of a lens by a thermal expansion difference of different materials, thereby simplifying the structure thereof and reducing the cost.

    摘要翻译: 本公开提供了一种MEMS器件,包括:具有空腔的固定衬底; 驱动单元,设置在所述空腔中,并且浮置在所述固定基板上; 以及用于将固定基板与驱动单元物理连接并根据控制电流改变驱动单元的高度的弹性单元,其中弹性单元包括连接到固定基板并根据控制电流弯曲的双压电晶片驱动单元, 连接到驱动单元的弹簧和将双压电晶片驱动单元连接到弹簧的框架。 因此,为了克服根据功率消耗和由于线圈和磁体引起的尺寸减小的限制,MEMS器件驱动一个透镜,从而可以降低功耗及其尺寸。 此外,MEMS器件通过不同材料的热膨胀差来应用通过透镜的垂直操作来执行自动聚焦功能的热方案,从而简化其结构并降低成本。

    DEVICE AND METHOD FOR GENERATING A SECOND TEMPERATURE VARIATION FROM A FIRST TEMPERATURE VARIATION
    8.
    发明申请
    DEVICE AND METHOD FOR GENERATING A SECOND TEMPERATURE VARIATION FROM A FIRST TEMPERATURE VARIATION 有权
    从第一温度变化产生第二温度变化的装置和方法

    公开(公告)号:US20140295365A1

    公开(公告)日:2014-10-02

    申请号:US14362285

    申请日:2012-11-29

    发明人: Fabrice Casset

    IPC分类号: F24J3/00

    摘要: A device for generating a second temperature variation ΔT2 from a first use temperature variation ΔT1, includes an elastocaloric material layer, having an internal temperature which is able to vary by ΔT2 in response to a given mechanical stress variation Δσ applied to the elastocaloric material layer. The variation Δσ being induced by the first use temperature variation ΔT1 There is a suspended element in mechanical contact with the elastocaloric material layer so as to apply to this layer a mechanical stress that varies in response to the use temperature variation ΔT1. The suspended element is arranged so as to make the mechanical stress applied to the elastocaloric material layer vary by Δσ in response to the temperature variation ΔT1 to generate the second temperature variation ΔT2.

    摘要翻译: 用于从第一使用温度变化&Dgr; T1产生第二温度变化> T2的装置包括弹性体材料层,其具有响应于给定的机械应力变化&Dgr能够变化为&Dgr; T2的内部温度; &sgr 应用于弹性材料层。 变化与变化 由第一使用温度变化引起的; Dgr; T1具有与弹性体材料层机械接触的悬浮元件,以便向该层施加响应于使用温度变化&Dgr; T1变化的机械应力。 悬挂元件布置成使得施加到弹性材料层的机械应力变化为&Dgr; 响应于温度变化&Dgr; T1以产生第二温度变化&Dgr; T2。

    Integrated Mechanical Device for Electrical Switching
    9.
    发明申请
    Integrated Mechanical Device for Electrical Switching 有权
    集成电气开关机械装置

    公开(公告)号:US20140167908A1

    公开(公告)日:2014-06-19

    申请号:US14185310

    申请日:2014-02-20

    IPC分类号: H01H37/52

    摘要: An integrated circuit comprising a mechanical device for electrical switching comprising a first assembly being thermally deformable and having a beam held at at least two different locations by at least two arms, the beam and the arms being metal and disposed within the same metallization level, and further comprising at least one electrically conducting body. The first assembly has a first configuration at a first temperature and a second configuration at a second temperature different from the first temperature. The beam is out of contact with the electrically conducting body in one configuration in contact with the body in the other configuration. The beam establishes or breaks an electrical link passing through the said at least one electrically conducting body and through the said beam in the different configurations.

    摘要翻译: 一种集成电路,包括用于电开关的机械装置,包括可热变形的第一组件,并且具有通过至少两个臂保持在至少两个不同位置处的梁,所述梁和所述臂是金属并且设置在相同的金属化水平内,以及 还包括至少一个导电体。 第一组件具有在第一温度下的第一构型和在与第一温度不同的第二温度下的第二构型。 在与另一种结构中的身体接触的一种结构中,光束与导电体脱离接触。 光束建立或断开通过所述至少一个导电体并通过所述光束的不同构造的电连接。