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    PARTICLE DETECTION VIA RESONANT FREQUENCIES
    1.
    发明公开
    PARTICLE DETECTION VIA RESONANT FREQUENCIES 审中-公开

    公开(公告)号：US20230280262A1

    公开(公告)日：2023-09-07

    申请号：US18023718

    申请日：2020-09-09

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Viktor Shkolnikov ,  Joshua M. Yu ,  Matthew David Smith ,  Roberto A. Pugliese

    IPC: G01N15/14

    CPC classification number: G01N15/1484 ,  G01N15/1429

    Abstract: In one example in accordance with the present disclosure, a particle detection system is described. The particle detection system includes a microfluidic channel through which fluid is to flow. The fluid includes particles. The particle detection system also includes a sensing circuit to output a resonant frequency. The sensing circuit includes a pair of electrodes disposed within the microfluidic channel. Contents of a volume between the pair of electrodes changes a capacitance between the pair of electrodes. A change in the capacitance changes the resonant frequency output by the sensing circuit. The particle detection system also includes a controller to determine the contents of the volume based on the resonant frequency.

    Microfluidic apparatuses for fluid movement control
    4.
    发明授权
    Microfluidic apparatuses for fluid movement control 有权

    公开(公告)号：US11097272B2

    公开(公告)日：2021-08-24

    申请号：US16099172

    申请日：2016-07-26

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Chantelle Domingue ,  Tod Woodford ,  Manish Giri ,  Matthew David Smith ,  George H Corrigan, III ,  Masoud Zavarehi ,  Joshua M. Yu

    IPC: B01L3/00 ,  G01N15/10 ,  G01N35/10

    Abstract: According to an example, a microfluidic apparatus may include a fluid slot and a foyer that is in fluid communication with the fluid slot via a channel having a relatively smaller width than the foyer. The microfluidic apparatus may also include an electrical sensor to measure a change in an electrical field caused by a particle of interest in a fluid passing through the channel from the fluid slot to the foyer, an actuator to apply pressure onto fluid contained in the foyer, and a controller to receive the measured change in the electrical field from the electrical sensor, determine, from the received change in the electrical field, an electrical signature of the particle of interest, and control the actuator to control movement of the particle of interest based upon the determined electrical signature of the particle of interest.

    CONTROL OF FLUID EJECTION FROM A MICROFLUIDIC DEVICE
    5.
    发明申请
    CONTROL OF FLUID EJECTION FROM A MICROFLUIDIC DEVICE 有权

    公开(公告)号：US20250012703A1

    公开(公告)日：2025-01-09

    申请号：US18702172

    申请日：2021-10-29

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Yang Lei ,  Joshua M. Yu ,  Timothy Merritt Holt ,  Angela Bakkom

    IPC: G01N15/1031 ,  G01N15/01 ,  G06V20/69

    Abstract: A non-limiting example method for control of fluid ejection from a microfluidic device includes firing a microfluidic ejector of a microfluidic device to expel a fluid from a channel of the microfluidic device. In response to detecting an instance of signal change from an impedance sensor disposed in the channel, the method includes controlling fluid ejection from the microfluidic ejector and capturing an image of the channel with an imaging apparatus. Using the captured image, a determination is made as to whether passage of a cell into the channel is associated with the instance of signal change from the impedance sensor. Based on the determination, the microfluidic ejector may fire to dispense the fluid from the channel into a reservoir.

    Integrated circuit
    6.
    外观设计
    Integrated circuit 有权

    公开(公告)号：USD1022931S1

    公开(公告)日：2024-04-16

    申请号：US29801988

    申请日：2021-08-02

    Applicant: Hewlett-Packard Development Company, L.P.

    Designer： Vignesh Kannan ,  Joshua M. Yu ,  Matthew David Smith ,  Jeffrey A. Nielsen ,  Kenneth Duda

    Abstract: FIG. 1 is perspective view, taken from a front, lower-right elevation of a sensing and dispensing integrated circuit;
    FIG. 2 is a front plan view of the sensing and dispensing integrated circuit shown in FIG. 1;
    FIG. 3 is a back plan view of the sensing and dispensing integrated circuit shown in FIG. 1;
    FIG. 4 is a right side plan view of the sensing and dispensing integrated circuit shown in FIG. 1;
    FIG. 5 is a left side plan view of the sensing and dispensing integrated circuit shown in FIG. 1;
    FIG. 6 is a top plan view of the sensing and dispensing integrated circuit shown in FIG. 1; and,
    FIG. 7 is a bottom plan view of the sensing and dispensing integrated circuit shown in FIG. 1.
    Broken lines shown in the drawings represent portions of the integrated flex circuit that form no part of the claimed design.

    Microfluidic chips
    10.
    发明授权
    Microfluidic chips 有权

    公开(公告)号：US11179720B2

    公开(公告)日：2021-11-23

    申请号：US16319702

    申请日：2016-10-07

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Manish Giri ,  Chantelle Domingue ,  Tod Woodford ,  Matthew David Smith ,  Rachel M. White ,  Joshua M. Yu ,  Hilary Ely ,  Jeremy Sells

    IPC: B01L3/00 ,  F16K99/00

    Abstract: The present disclosure is drawn to microfluidic chips. The microfluidic chips can include an inflexible material having an elastic modulus of 0.1 gigapascals (GPa) to 450 GPa. A microfluidic channel can be formed within the inflexible material and can connect an inlet and an outlet. A working electrode can be associated with the microfluidic channel and can have a surface area of 1 μm2 to 60,000 μm2 within the microfluidic channel. A bubble support structure can also be formed within the microfluidic channel such that the working electrode is positioned to electrolytically generate a bubble that becomes associated with the bubble support structure.

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