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    MICROCHANNEL COOLING BLOCK AND COOLING SYSTEM INCLUDING THE SAME
    1.
    发明申请
    MICROCHANNEL COOLING BLOCK AND COOLING SYSTEM INCLUDING THE SAME 有权

    公开(公告)号：US20250071936A1

    公开(公告)日：2025-02-27

    申请号：US18454755

    申请日：2023-08-23

    Applicant: HRL LABORATORIES, LLC

    Inventor： John H. Martin ,  David A. Smith ,  Christopher Roper

    IPC: H05K7/20

    Abstract: A microchannel cooling block includes: a base plate; a microchannel array including a plurality of thermally conductive plates connected to and extending from a surface of the base plate, the thermally conductive plates being aligned so that a highest or second highest thermally conductive axis thereof extends away from the surface of the base plate, adjacent ones of the thermally conductive plates being spaced apart from each other to form a plurality of microchannels between the thermally conductive plates, one of the microchannels being between each adjacent two of the thermally conductive plates; and a manifold connected to the thermally conductive plates, an interior of the manifold being in fluid communication with the microchannels in the microchannel array.

    Ramsey-bordé ion frequency-reference apparatus, and methods of making and using the same
    2.
    发明授权
    Ramsey-bordé ion frequency-reference apparatus, and methods of making and using the same 有权

    公开(公告)号：US11869679B2

    公开(公告)日：2024-01-09

    申请号：US17576897

    申请日：2022-01-14

    Applicant: HRL Laboratories, LLC

    Inventor： Travis Autry ,  Ian Counts ,  Jennifer Ellis ,  Danny Kim ,  Christopher Roper

    IPC: G21K1/02 ,  G21K1/00 ,  H03L7/26 ,  G04F5/14

    CPC classification number: G21K1/02 ,  G21K1/006 ,  H03L7/26 ,  G04F5/14

    Abstract: In some variations, an interferometric frequency-reference apparatus comprises: an atom source configured to supply neutral atoms to be ionized; an ionizer configured to excite the neutral atoms to form ionized atoms; an ion collimator configured to form a collimated beam of the ionized atoms; probe lasers; and a Doppler laser configured to determine a ground-state population of the ionized atoms, wherein the atom source, the ionizer, and the ion collimator are disposed within a vacuum chamber. Other variations provide a method of creating a stable frequency reference, comprising: forming ionized atoms from an atomic vapor; forming a collimated beam of ionized atoms; illuminating ionized atoms with first and second probe lasers; adjusting the frequencies of the first probe and second probe lasers using Ramsey spectroscopy to an S→D transition of ionized atoms; and determining a ground-state population of the ionized atoms with another laser.

    Ramsey-Bordé ion frequency-reference apparatus, and methods of making and using the same
    4.
    发明授权
    Ramsey-Bordé ion frequency-reference apparatus, and methods of making and using the same 有权

    公开(公告)号：US11929186B2

    公开(公告)日：2024-03-12

    申请号：US18120787

    申请日：2023-03-13

    Applicant: HRL Laboratories, LLC

    Inventor： Travis Autry ,  Ian Counts ,  Jennifer Ellis ,  Danny Kim ,  Christopher Roper

    IPC: G21K1/02 ,  G21K1/00 ,  H03L7/26 ,  G04F5/14

    CPC classification number: G21K1/02 ,  G21K1/006 ,  H03L7/26 ,  G04F5/14

    Abstract: In some variations, an interferometric frequency-reference apparatus comprises: an atom source configured to supply neutral atoms; a collimator configured to form a collimated beam of the neutral atoms; one or more probe lasers; and a Doppler laser configured to determine a ground-state population of the neutral atoms. Other variations provide a method of creating a stable frequency reference, comprising: forming a collimated beam of neutral atoms; illuminating the neutral atoms with first and second probe lasers; adjusting the frequencies of the first probe laser and second probe laser using Ramsey spectroscopy to an S→D transition of the neutral atoms; and determining a ground-state population of the neutral atoms with another laser. The interferometric frequency-reference apparatus may provide an optical frequency reference or a microwave frequency reference.

    Hierarchical Heat Exchanger Manifold and Heat Exchanger Including the Same
    7.
    发明申请
    Hierarchical Heat Exchanger Manifold and Heat Exchanger Including the Same 有权

    公开(公告)号：US20210116188A1

    公开(公告)日：2021-04-22

    申请号：US16930203

    申请日：2020-07-15

    Applicant: HRL LABORATORIES, LLC

    Inventor： Christopher Roper ,  John Martin ,  Randall Schubert

    IPC: F28F9/02

    Abstract: A hierarchical heat exchanger manifold includes: first and second fluid passages respectively open to an inlet and an outlet in a first level of the heat exchanger manifold; a plurality of first and second fluid passages in a second level of the heat exchanger manifold; and a plurality of first and second fluid passages in a third level of the heat exchanger manifold. A number of the first fluid passages in the third level is greater than a number of the first fluid passages in the second level. Each of the first fluid passages in the second level is in fluid communication with the inlet and at least one of the first fluid passages in the third level, and each of the second fluid passages in the second level is in fluid communication with the outlet and at least one of the second fluid passages in the third level.

    Surface antenna compensation
    8.
    发明授权
    Surface antenna compensation 有权

    公开(公告)号：US12199357B1

    公开(公告)日：2025-01-14

    申请号：US17887725

    申请日：2022-08-15

    Applicant: HRL LABORATORIES, LLC

    Inventor： Ryan Quarfoth ,  Christopher Roper ,  Jacob Hundley

    IPC: H01Q5/45 ,  H01Q1/28 ,  H01Q1/38 ,  H01Q19/02 ,  H04B7/0426 ,  H04B17/11 ,  H04B17/21

    Abstract: An apparatus and related method are disclosed for compensation of an antenna and/or an antenna array located at a surface that experiences environmental conditions. The apparatus can include: an embedded compensation and/or calibration structure configured to be interrogated by an electromagnetic wave, to dynamically compensate for surface erosion, thermal expansion, and/or dielectric constant changes of a surface scattering antenna; and a processor configured to: receive measurements of the compensation and/or calibration structure to determine beam pointing for dynamically varying surface conditions and perform sensing and/or seeking observation.

    Architected materials with controlled permeability and methods for making and using the same
    9.
    发明授权
    Architected materials with controlled permeability and methods for making and using the same 有权

    公开(公告)号：US12103074B1

    公开(公告)日：2024-10-01

    申请号：US17702789

    申请日：2022-03-24

    Applicant: HRL Laboratories, LLC

    Inventor： John H. Martin ,  Brennan Yahata ,  Darby Laplant ,  Christopher Roper

    IPC: B33Y80/00 ,  B22F10/20 ,  B28B1/00 ,  B29C64/141 ,  B33Y10/00

    CPC classification number: B22F10/20 ,  B28B1/001 ,  B29C64/141 ,  B33Y10/00 ,  B33Y80/00

    Abstract: Some variations provide an additively manufactured article comprising a first region and a second region, wherein the first region is a solid region or a porous region, wherein the second region has a pore size larger than the first-region pore size, and wherein the first-region average permeability is lower than the second-region average permeability. Some variations provide a co-sintering method of making an architected material with regions having different permeabilities, in which different additive-manufacturing process parameters are applied to distinct regions of the structure. Other variations provide a wall-pinning method of making an architected material with regions having different permeabilities, in which additive-manufacturing process parameters are selected to sinter pinned feedstock powder between solid walls. Engineered structures with controlled permeability, integrated manifolds, and arbitrary geometries are disclosed, without the requirement of complex manufacturing. Many uses are described for the disclosed additively manufactured articles.

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