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    A QUANTUM DOT PHOTODETECTOR APPARATUS AND ASSOCIATED METHODS
    1.
    发明申请
    A QUANTUM DOT PHOTODETECTOR APPARATUS AND ASSOCIATED METHODS 审中-公开

    公开(公告)号：US20190051681A1

    公开(公告)日：2019-02-14

    申请号：US16080236

    申请日：2017-02-20

    Applicant: Nokia Technologies Oy

    Inventor： Sami KALLIOINEN ,  Martti VOUTILAINEN

    IPC: H01L27/144 ,  G01J1/16 ,  G01J1/44

    Abstract: An apparatus comprising at least one pair of a first inner and second outer photodetector, each photodetector comprising a channel member, respective source and drain electrodes configured to enable a flow of electrical current through the channel member between the source and drain electrodes, and a plurality of quantum dots configured to generate electron-hole pairs on exposure to incident electromagnetic radiation to produce a detectable change in the electrical current flowing through the channel member. The first inner and second outer photodetectors are configured to generate electron-hole pairs which produce an increase and decrease in electrical current through the channel members. The first inner and the second outer photodetectors share a common channel member, which is partitioned by one or more of the respective source and drain electrodes respectively extending in two dimensions such that the first inner photodetector is defined within the second outer photodetector.

    AN APPARATUS AND ASSOCIATED METHODS FOR COMPUTED TOMOGRAPHY
    2.
    发明申请
    AN APPARATUS AND ASSOCIATED METHODS FOR COMPUTED TOMOGRAPHY 审中-公开

    公开(公告)号：US20180299390A1

    公开(公告)日：2018-10-18

    申请号：US15769235

    申请日：2016-10-07

    Applicant: Nokia Technologies Oy

    Inventor： Martti VOUTILAINEN

    IPC: G01N23/046 ,  G01T1/36

    Abstract: An apparatus, method and computer program for operating an apparatus. The apparatus comprises: a scintillator and an array of photodetectors; the scintillator configured to be rotatable around the periphery of a computed tomography scanner, the scintillator configured to receive X-rays incident on the scintillator, convert the received X-rays to visible light and transmit the visible light towards a corresponding photodetector of the array of photodetectors; and the array of photodetectors fixed around the periphery of the computed tomography scanner, each of the photodetectors in the array of photodetectors configured to output an electrical signal in response to detecting the visible light received from the scintillator.

    Array Apparatus and Associated Methods
    4.
    发明申请
    Array Apparatus and Associated Methods 有权

    公开(公告)号：US20210217745A1

    公开(公告)日：2021-07-15

    申请号：US16093217

    申请日：2017-03-15

    Applicant: Nokia Technologies Oy

    Inventor： Mark ALLEN ,  Martti VOUTILAINEN ,  Sami KALLIOINEN

    IPC: H01L27/02 ,  H03K17/16

    Abstract: An apparatus including an array of field-effect transistors, each field-effect transistor including a channel, source and drain electrodes, and a gate electrode configured to enable the flow of electrical current to be varied, the gate electrode separated from the channel by a dielectric material configured to inhibit a flow of electrical current between the channel and gate electrode, wherein the gate electrode of each field-effect transistor is connected in parallel to the gate electrodes of the other field-effect transistors in the array, and wherein a respective two-terminal current-limiting component is coupled to each gate electrode such that, in the event that a defect in the dielectric material of a particular field-effect transistor allows a leakage current to flow between the channel and gate electrode of that field-effect transistor, the respective two-terminal current-limiting component limits the magnitude of the leakage current.

    AN ACOUSTIC APPARATUS AND ASSOCIATED METHODS
    5.
    发明申请
    AN ACOUSTIC APPARATUS AND ASSOCIATED METHODS 审中-公开

    公开(公告)号：US20190058955A1

    公开(公告)日：2019-02-21

    申请号：US15771229

    申请日：2016-10-07

    Applicant: Nokia Technologies Oy

    Inventor： Martti VOUTILAINEN ,  Oleksandr KONONENKO

    IPC: H04R17/00 ,  H04R7/06

    CPC classification number: H04R17/00 ,  H04R7/02 ,  H04R7/06 ,  H04R2307/023 ,  H04R2400/01

    Abstract: An apparatus comprising a piezoelectric diaphragm positioned between opposing first and second electrodes, the piezoelectric diaphragm comprising a stack of graphene oxide layers between respective electrode-engaging layers of reduced graphene oxide, wherein the apparatus is configured to have one or more of a sound output mode and a sound input mode such that: in the sound output mode, the first and second electrodes are configured to apply a voltage to the reduced graphene oxide layers to generate an electric field across the graphene oxide stack, the generated electric field causing vibration of the piezoelectric diaphragm to produce a sound output wave corresponding to the applied voltage, and in the sound input mode, the reduced graphene oxide layers are configured to collect electrical charge which is induced in the graphene oxide layers by vibration of the piezoelectric diaphragm in response to a sound input wave, the collected electrical charge creating a voltage between the first and second electrodes corresponding to the sound input wave.

    Quantum Dot Sensor Readout
    7.
    发明申请
    Quantum Dot Sensor Readout 审中-公开

    公开(公告)号：US20180054585A1

    公开(公告)日：2018-02-22

    申请号：US15559706

    申请日：2016-03-02

    Applicant: Nokia Technologies Oy

    Inventor： Martti VOUTILAINEN ,  Sami KALLIOINEN

    IPC: H04N5/3745 ,  H01L31/0352

    CPC classification number: H04N5/37455 ,  H01L27/142 ,  H01L27/14643 ,  H01L31/035218 ,  H01L31/112 ,  H04N5/374 ,  H04N5/378

    Abstract: An apparatus, including a quantum dot graphene field effect transistor configured to operate such that photons incident thereon cause electron-hole pairs to be formed; a connector element connected to the back gate of the transistor; a switch element as an output switch to provide an output for a current flowing through the transistor. The transistor is configured to be back gate biased via the connector element connected to the back gate such that the electrons or the holes formed are trapped in an at least one quantum dot and respectively the holes or the electrons migrate to the channel of the transistor. A drain to source voltage connected to the transistor causes a current proportional to the charge of the holes or electrons trapped at the quantum dots by the electrons or holes to flow in the channel.

    PHYSICAL UNCLONABLE FUNCTION
    8.
    发明申请
    PHYSICAL UNCLONABLE FUNCTION 审中-公开

    公开(公告)号：US20170230188A1

    公开(公告)日：2017-08-10

    申请号：US15502361

    申请日：2014-08-13

    Applicant: Nokia Technologies Oy

    Inventor： Martti VOUTILAINEN

    IPC: H04L9/32 ,  H01L29/16 ,  H01L23/00

    CPC classification number: H04L9/3278 ,  B82Y10/00 ,  B82Y15/00 ,  G01N21/1702 ,  G01N21/3581 ,  G09C1/00 ,  H01L23/573 ,  H01L29/1606 ,  H04L2209/12 ,  H04L2209/80

    Abstract: Apparatus, electronic device, system and method comprising a first element (102) configured to receive a first signal and convert the first signal to a second signal, a second element (104) configured to relay the second signal to a third element (106, 108), the third element (106, 108) being configured to convert the second signal to a third signal and to send the third signal; wherein the first element (102) is configured to convert the first signal to the second signal in such a way that the conversion is dependent on the physio-chemical structure of at least part of the first element (102). In some embodiments the first element comprises a photoacoustic sensor comprising at least one graphene layer, the second element comprises a mechanical wave transmission line, and the third element comprises carbon nanotube antennas.

    APPARATUS AND METHOD FOR TUNING A RESONANCE FREQUENCY
    9.
    发明申请
    APPARATUS AND METHOD FOR TUNING A RESONANCE FREQUENCY 审中-公开
    用于调谐谐振频率的装置和方法

    公开(公告)号：US20160028374A1

    公开(公告)日：2016-01-28

    申请号：US14774471

    申请日：2013-03-11

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Martti VOUTILAINEN

    IPC: H03J1/06 ,  H01Q1/50 ,  H03H3/02 ,  H03H9/02 ,  H03H9/46

    CPC classification number: H03J1/06 ,  H01L41/193 ,  H01Q1/50 ,  H03H3/02 ,  H03H9/02244 ,  H03H9/02409 ,  H03H9/2436 ,  H03H9/2457 ,  H03H9/2463 ,  H03H9/462 ,  H03H9/70 ,  H03H2003/027 ,  H03H2009/155

    Abstract: There are disclosed various apparatuses and methods for tuning a resonance frequency. In some embodiments there is provided an apparatus (200) comprising at least one input electrode (202, 204) for receiving radio frequency signals; a graphene foil (210) for converting at least part of the radio frequency signals into mechanical energy; at least one dielectric support element (212) to support the graphene foil (210) and to space apart the at least one input electrode (202, 204) and the graphene foil (210). The graphene foil (210) has piezoelectric properties. In some embodiments there is provided a method comprising receiving radio frequency signals by at least one input electrode (202, 204) of an apparatus (200); providing a bias voltage to the apparatus (200) for tuning the resonance frequency of the apparatus (200); and converting at least part of the radio frequency signals into mechanical energy by a graphene foil (210) having piezoelectric properties.

    Abstract translation: 公开了用于调谐共振频率的各种装置和方法。 在一些实施例中，提供了一种装置（200），包括用于接收射频信号的至少一个输入电极（202,204）; 用于将至少部分射频信号转换为机械能的石墨烯箔（210）; 至少一个电介质支撑元件（212），以支撑所述石墨烯箔（210）并使所述至少一个输入电极（202,204）和所述石墨烯箔（210）间隔开。 石墨烯箔（210）具有压电特性。 在一些实施例中，提供了一种方法，包括由装置（200）的至少一个输入电极（202,204）接收射频信号; 向所述设备（200）提供偏置电压以调谐所述设备（200）的谐振频率; 以及通过具有压电特性的石墨烯箔（210）将至少部分射频信号转换为机械能。

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