Apparatus for the processing of single molecules

    公开(公告)号:US10281453B2

    公开(公告)日:2019-05-07

    申请号:US14345261

    申请日:2012-09-25

    IPC分类号: G01N33/487

    摘要: The invention relates to an apparatus (100) and a method for the processing of single molecules, particularly for the sensing or sequencing of single-stranded DNA. A bottom layer (110) and an electrically conductive top layer (120) with a first and a second slit (111,121), respectively, are disposed on top of each other such that an aperture (A) is formed by the slits. The slits (111,121) are preferably perpendicular to each other. An electrical circuit (140) may be connected to the top layer (120), allowing to sense single molecules that pass through the aperture (A).

    DNA sequencing with reagent recycling on wiregrid

    公开(公告)号:US10564104B2

    公开(公告)日:2020-02-18

    申请号:US15806473

    申请日:2017-11-08

    IPC分类号: G01N21/64 C12Q1/6874

    摘要: The present invention relates to DNA sequencing with reagent cycling on the wiregrid. The sequencing approach suggested with which allows to use a single fluid with no washing steps. Based on strong optical confinement and of excitation light and of cleavage light, the sequencing reaction can be read-out without washing the surface. Stepwise sequencing is achieved by using nucleotides with optically cleavable blocking moieties. After read-out the built in nucleotide is deblocked by cleavage light through the same substrate. This ensures that only bound nucleotides will be unblocked.

    Microfluidic device with valve
    4.
    发明授权

    公开(公告)号:US10393101B2

    公开(公告)日:2019-08-27

    申请号:US14911480

    申请日:2014-07-29

    摘要: A microfluidic device (100) comprising at least one passive valve (PV, 120, 130), the passive valve being constituted by a sequence of a first carrier layer (CL 1) with an aperture providing a passage (P 1) for fluid flow, a first binding layer (BLI) with a first opening, a flexible layer (FL) with a through-hole (TH), a second binding layer (BL2) with a second opening, and a second carrier layer (CL2). Moreover, the flexible layer (FL) can move within a valve chamber (VC) constituted by the openings. Depending on the pressure difference across the passive valve (PV), the flexible layer (FL) can bend towards the first carrier layer (CLI) and close the aperture, while it opens the passage (P1) when bending in the opposite direction. Two of such properly oriented passive valves together with an intermediate active valve (AV) can constitute a one-stroke pump. A method for manufacturing such a fluidic device is also disclosed.

    Biopsy container
    7.
    发明授权

    公开(公告)号:US11160541B2

    公开(公告)日:2021-11-02

    申请号:US16300327

    申请日:2017-05-09

    摘要: The invention relates to a biopsy container, a biopsy device, an imaging system, and a method for processing images of a biopsy container. The biopsy container comprises a container orientation mark and an alignment mark. The container orientation mark is configured for a cooperation with a corresponding shaft orientation mark arranged on a tube shaft of a biopsy device to indicate a specific orientation of the biopsy container relative to the tube shaft. The alignment mark is configured for a registration of images of the biopsy container.

    Biosensor comprising waveguide
    9.
    发明授权

    公开(公告)号:US10330598B2

    公开(公告)日:2019-06-25

    申请号:US15100346

    申请日:2014-11-25

    摘要: The invention relates to an optical device (110) and a corresponding detection apparatus (100) that may for example be used for monitoring the replication of nucleotide sequences at a surface. In a preferred embodiment, the optical device (110) comprises a waveguide substrate (130) with a wiregrid (140) on a bottom surface (132), wherein apertures (141) of the wiregrid are in at least one direction (x) smaller than a characteristic wavelength (λ) of input light (IL). Moreover, a diffractive structure (120) is disposed on the opposite surface (131) of the substrate (130) for coupling input light (IL) into the substrate (130) such that constructive interference occurs at the apertures (141). Thus evanescent waves can be generated with high efficiency in these apertures, allowing for example for a surface-specific excitation of fluorescence (FL) that can be sensed by a detector (160).