Low-voltage microfluidic valve device and system for regulating the flow of fluid

    公开(公告)号:US11592016B2

    公开(公告)日:2023-02-28

    申请号:US16928980

    申请日:2020-07-14

    Abstract: A low-voltage microfluidic valve device and system for regulating the flow of fluid. One low-voltage microfluidic valve device for regulating the low of fluid includes a nano-textured dendritic metallic filament configured to grow and retract in response to a voltage. The low-voltage microfluidic valve device also includes a microfluidic channel configured to allow fluid flow, wherein the fluid flow is selectively interrupted by the growth of the nano-textured dendritic metallic filament. The low-voltage microfluidic valve device also includes a membrane positioned proximate to the fluid and configured to alter shape in response to the growth of the nano-textured dendritic metallic filament.

    METHODS AND SYSTEMS FOR REMOTE SLEEP MONITORING

    公开(公告)号:US20230018038A1

    公开(公告)日:2023-01-19

    申请号:US17772844

    申请日:2020-10-27

    Abstract: Methods and systems for remote sleep monitoring are provided. Such methods and systems provide non-contact sleep monitoring via remote sensing or radar sensors. In this regard, when processing backscattered radar signals from a sleeping subject on a normal mattress, a breathing motion magnification effect is observed from mattress surface displacement due to human respiratory activity. This undesirable motion artifact causes existing approaches for accurate heart-rate estimation to fail. Embodiments of the present disclosure use a novel active motion suppression technique to deal with this problem by intelligently selecting a slow-time series from multiple ranges and examining a corresponding phase difference. This approach facilitates improved sleep monitoring, where one or more subjects can be remotely monitored during an evaluation period (which corresponds to an expected sleep cycle).

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