Detection method and detection device

    公开(公告)号:US12092560B2

    公开(公告)日:2024-09-17

    申请号:US17536437

    申请日:2021-11-29

    摘要: A detection method according to one or more embodiments may include transporting a rack holding a reaction vessel along a first axis toward a sample dispensing position, linearly moving the sample dispensing pipette above the rack along a second axis intersecting the first axis and dispensing a sample into the reaction vessel located at the sample dispensing position, transporting the rack along the first axis toward a reagent dispensing position; linearly moving a reagent dispensing pipette above the rack along a third axis intersecting the first axis, and dispensing a reagent into the reaction vessel located at the reagent dispensing position, and detecting a detection target in a measurement specimen prepared from the sample and the reagent.

    PHOTOACOUSTIC TWEEZERS
    2.
    发明公开

    公开(公告)号:US20240293815A1

    公开(公告)日:2024-09-05

    申请号:US17617545

    申请日:2021-10-18

    申请人: FUDAN UNIVERSITY

    摘要: The invention discloses a method and an apparatus for trapping and manipulating particles, relating to the field of acoustic manipulation. The invention discloses a photoacoustic tweezers, which use bimodal transducer generate a weak acoustic wave and a strong acoustic wave. The strong acoustic wave behaves as an effective gain medium to amplify the acoustic radiation force of this weak acoustic wave. After an interference of the strong acoustic wave and the weak acoustic wave, an amplified trapping force is produced for achieving the trapping and manipulation of particles. The invention can manipulate several particles simultaneously in high throughput and particles of various sizes ranging from 1 μm to 1 mm. The invention can form reconfigurable acoustic fields which permits versatile and selective manipulation with no need of complicated acoustic arrays. The invention is a versatile, biocompatible, selective and high-throughput manipulation method.

    FLOW VIROMETER FOR RAPID DETECTION OF INTACT VIRUSES

    公开(公告)号:US20240142460A1

    公开(公告)日:2024-05-02

    申请号:US18276666

    申请日:2022-02-11

    摘要: Systems and methods that allow optical detection of nanoparticles according to size and interaction with specific antibodies. Using abiological sample combined with fluorescent dyes and fluorescently labeled antibodies, implementations of the disclosed system allow for detection of >100 particles having diameters as low as 100 nm in under 10 minutes. The detection mechanisms combine confocal detection of particles in microfluidic flow devices. Concentrating the sample using hydrodynamic focusing allows detection of particles having concentrations as low as 104 particles per mL of the sample. These capabilities allow for the detection, identification, and quantitation of viruses from bodily fluids such as saliva, where biologically relevant virus concentrations of potentially infected subjects are within the range of 103-107 particles/mL. The system and methods comprise a ‘flow virometer’ providing rapid, direct feedback regarding the existence of specific viruses in a biological sample and serves as a technological basis for commercial products.