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    Energy generation from salinity gradients using asymmetrically porous electrodes
    5.
    发明授权
    Energy generation from salinity gradients using asymmetrically porous electrodes 有权

    公开(公告)号：US11742509B2

    公开(公告)日：2023-08-29

    申请号：US17621891

    申请日：2020-06-23

    申请人： University of Hawaii

    发明人： Tianwei Ma ,  Jian Yu

    IPC分类号： H01M8/22

    CPC分类号： H01M8/227

    摘要： Disclosed herein is a system and method for energy generation from salinity gradients using asymmetrically porous electrodes. In certain embodiments, an energy generation system includes at least one pair of asymmetrically porous electrodes positioned within a chamber in selective fluidic communication with a freshwater source (e.g., a river) and a saltwater source (e.g., an ocean). Asymmetry between a first average percent volume per unit pore-width of a first electrode and a second average percent volume per unit pore-width of a second electrode creates differing interfacial potentials between the first electrode and the second electrode when such electrodes are immersed in freshwater and saltwater. By cyclically immersing the electrodes in freshwater and saltwater, energy is harvested from Gibbs free energy from mixing saltwater and freshwater. Such a system does not require a membrane or an external charge source. Methods of generating energy using asymmetrically porous electrodes are also provided.

    FABRY-PEROT FOURIER TRANSFORM SPECTROMETER
    6.
    发明公开
    FABRY-PEROT FOURIER TRANSFORM SPECTROMETER 审中-公开

    公开(公告)号：US20230221180A1

    公开(公告)日：2023-07-13

    申请号：US17819892

    申请日：2022-08-15

    申请人： University of Hawaii

    发明人： Paul Lucey

    IPC分类号： G01J3/26 ,  G01J3/453 ,  G01J3/14

    CPC分类号： G01J3/26 ,  G01J3/4531 ,  G01J3/14

    摘要： A spatial Fourier transform spectrometer is disclosed. The Fourier transform spectrometer includes a Fabry-Perot interferometer with first and second optical surfaces. The gap between the first and second optical surfaces spatially varies in a direction that is orthogonal to the optical axis of the Fourier transform spectrometer. The Fabry-Perot interferometer creates an interference pattern from input light. An image of the interference pattern is captured by a detector, which is communicatively coupled to a processor. The processor is configured to process the interference pattern image to determine information about the spectral content of the input light.

    Activated magnesium boride materials for hydrogen storage
    7.
    发明授权
    Activated magnesium boride materials for hydrogen storage 有权

    公开(公告)号：US11661338B2

    公开(公告)日：2023-05-30

    申请号：US16648661

    申请日：2018-09-21

    申请人： University of Hawaii

    发明人： Godwin Severa ,  Craig M. Jensen ,  Cody Sugai ,  Stephen Young-min Kim

    IPC分类号： C01B3/00 ,  C01B35/04

    CPC分类号： C01B3/0026 ,  C01B35/04

    摘要： Some embodiments described herein provide for methods for synthesizing magnesium borohydride from hydrogenation of magnesium boride at moderate temperature and pressure in the presence of a modifier. The modifier may be in form of hydrides, liquid hydrogen carriers, ammonia borane, metallic species, croconate anion based materials, ethers, amines or imines, metal carbides, borides, graphene, arenes, magnesium, aluminum, calcium or ionic liquids. Some embodiments provide for charging magnesium boride in presence of a modifier at high pressure hydrogen while simultaneously heating the material. The modification in some instances may lead to an improved magnesium boride product with enhanced properties for application in other hydrogen storage systems.

    STEERABLE SURGICAL DEVICES, AND METHODS FOR THEIR USE AND TRACKING
    9.
    发明申请
    STEERABLE SURGICAL DEVICES, AND METHODS FOR THEIR USE AND TRACKING 有权

    公开(公告)号：US20220133354A1

    公开(公告)日：2022-05-05

    申请号：US17516076

    申请日：2021-11-01

    申请人： UNIVERSITY OF HAWAII

    发明人： Bardia Konh

    IPC分类号： A61B17/34

    摘要： A steerable surgical device includes tubular body members and at least one moveable joint, with a moveable tray member arranged to permit tissue extraction and a retractable tip member for removal of a sample while a remainder of the surgical device remains in the tissue. A method utilizes sensed SMA electrical properties and sensed compressive force to determine joint deflection that is used with a joint deflection model to map tip position in tissue. Another method for determining position of a tip of a steerable instrument within tissue utilizes transverse ultrasound probe images and image processing together with saved and predicted tip information. A method for sequentially removing a plurality of samples from tissue utilizes a steerable surgical device, without requiring complete removal of the device from the tissue

    Lung water content measurement system and calibration method
    10.
    发明授权
    Lung water content measurement system and calibration method 有权

    公开(公告)号：US11219411B2

    公开(公告)日：2022-01-11

    申请号：US15042109

    申请日：2016-02-11

    申请人： University of Hawaii

    发明人： Magdy F. Iskander ,  Ruthsenne R. G. Perron

    IPC分类号： A61B5/0507 ,  A61B5/08 ,  A61B5/00 ,  G16H40/63 ,  A61B5/029 ,  A61B5/024 ,  A61B5/0205 ,  A61B5/021

    摘要： A system and method for monitoring lung water content of a patient. The system may include microwave sensors and a processor. The system may transmit microwave signals into, and receive microwave signals from, the thorax of a patient using the microwave sensors. The received microwave signals may each have at least one frequency component with a magnitude and a phase. The system may analyze the phase of the received microwave signal corresponding to a first pair of the microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of the received microwave signal corresponding to a second, different pair of the microwave sensors to determine whether the lung water content is increasing or decreasing. The system may also analyze the received microwave signals to determine a blood pressure indicator and to determine lung water content.