Sensor
    133.
    发明授权
    Sensor 有权

    公开(公告)号:US10274473B2

    公开(公告)日:2019-04-30

    申请号:US15300514

    申请日:2015-03-17

    Abstract: The present invention relates to a sensor for sensing hydrogen. The sensor of the present invention comprises: a core which reacts with hydrogen to change a resistance value; at least two electrodes connected to the core; and a variable resistor which is connected to at least one of the two electrodes and of which the resistance value changes in response to a control signal, wherein the core includes palladium having a thin film shape, and graphene which is applied on the palladium and has a thin film shape.

    Photolithography method
    138.
    发明授权

    公开(公告)号:US10108092B2

    公开(公告)日:2018-10-23

    申请号:US14895180

    申请日:2015-06-09

    Inventor: Eun-Ah You

    Abstract: Provided is a photolithography method, including: a) forming a photoresist layer satisfying D=m*(λ/2n) (D is a thickness of the photoresist layer, n is a refractive index of the photoresist, λ is a wavelength of irradiated light at the time of exposure, and m is a natural number of 1 or more) on a substrate; and b) manufacturing a photoresist pattern having a ring shape by exposing the photoresist layer and developing the exposed photoresist layer using a photo mask including a transparent substrate and a plate-type metal dot contacting a light emitting surface of the transparent substrate.

    Atomic magnetometer and operating method of the same

    公开(公告)号:US09927501B2

    公开(公告)日:2018-03-27

    申请号:US14573718

    申请日:2014-12-17

    CPC classification number: G01R33/26 G01R33/032

    Abstract: Provided are an atomic magnetometer and an operating method of the same. The atomic magnetometer includes a vapor cell receiving a circularly polarized pump beam and a linearly polarized probe beam and containing an alkali metal vapor, a detector adapted to receive the probe beam passing through the vapor cell to measure magneto-optical rotation of the probe beam, a feedback coil to establish a negative feedback magnetic field signal orthogonal to a first plane defined by traveling directions of the probe beam and the pump beam and provide the negative feedback magnetic field signal to the vapor cell, and a feedback amplifier adapted to provide feedback current to the feedback coil such that the negative feedback magnetic field proportional to a measurement magnetic field is established. The measurement magnetic field of a measurement target provides magneto-optical rotation of the probe beam in the vapor cell.

    MAGNETIC FIELD SENSOR AND APPARATUS FOR MEASURING MAGNETIC FIELD

    公开(公告)号:US20170371003A1

    公开(公告)日:2017-12-28

    申请号:US15534861

    申请日:2015-11-18

    Abstract: A magnetic field sensor of the present invention includes a first electrode including a magnetic material, a second electrode including a non-magnetic material, a common electrode disposed between the first electrode and the second electrode and connected to a ground terminal, a power supplier of which one end is connected to the first electrode and the second electrode and of which another end is connected to the common electrode to supply power of a frequency band required, a variable resistor configured to control at least one of a resistance value between the first electrode and the power supplier or a resistance value between the second electrode and the power supplier, and a differential amplifier connected to the first electrode through a positive terminal and connected to the second electrode through a negative terminal to output a difference value between a first capacitance generated by the first electrode and a second capacitance generated by the second electrode in response to external application of a magnetic field.

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