摘要:
A technique is presented for simultaneously sorting a first biological entity from a second biological entity and aligning the first biological entity, in a desired region within a flow chamber of a flow cell. The flow chamber has a rectangular cross-section. A bottom flow input module, a top flow input module and a sample input module provide a first fluid, a second fluid, and the sample, respectively, to the flow chamber. The sample laminarly flows sandwiched between the first and the second fluids. By controlling flow rate of the first and/or the second fluid the sample flow is aligned adjacent to but distinct from the desired region. An acoustic transducer generates a standing acoustic wave having pressure node linearly arranged along an axis passing through the desired region thus moving, i.e. sorting, and simultaneously orienting, the first biological entity from the sample flow into the desired region.
摘要:
An interfere) metric microscopy arrangement (1) is presented having an objective lens (20) that receives a light beam (9) emerging after sample interaction, wherefrom the light beam (9) is received by a beam splitter unit (30), positioned at a focal length (22) of the objective lens (20), the beam splitter unit (30) having a transparent substrate (32) and a point-like beam-splitting layer (34) that splits a part of the light beam (9) into a spatially filtered reference beam (40) and an object beam (50). Thereafter, a reference beam tube lens (60) and an object beam tube lens (70) receive the reference (40) and the object (50) beams, respectively. A beam combiner unit (80) having a transparent substrate (82) and a beam-combining layer (84) receives the reference (40) and the object (50) beams from the reference (60) and the object (70) beam tube lenses, respectively, and combines the reference (40) and the object (50) beams to form pattern-generating beam (99) directed towards the optical detector (90) to form an interference pattern thereon.
摘要:
A technique is presented for aligning, in a desired region within a flow chamber of a flow cell, a non-spherical biological entity carried in a sample. The flow chamber has a rectangular cross-section. A bottom flow input module, a top flow input module and a sample input module provide a viscoelastic first fluid, a second viscoelastic fluid, and the sample, respectively, to the flow chamber. The first and the second viscoelastic fluids laminarly flow along a bottom and a top wall of the flow chamber and the sample laminarly flows sandwiched between them. By controlling rate of flow of the first and/or the second viscoelastic fluids the sample flow, and thus the non-spherical biological entity, is focused in the desired region. A gradient of sheer within the sample flow set up due to the first and second viscoelastic fluids orients the non-spherical biological entity in the desired region.
摘要:
The present invention relates to an improved method for marker-free detection of a cell type of at least one cell in a medium using microfluidics and digital holographic microscopy, as well as a device, particular for carrying out the method.
摘要:
An interferometric microscopy arrangement (1) is presented having an objective lens (20) that receives a light beam (9) emerging after sample interaction, wherefrom the light beam (9) is received by a beam splitter unit (30), positioned at a focal length (22) of the objective lens (20), the beam splitter unit (30) having a transparent substrate (32) and a point-like beam-splitting layer (34) that splits a part of the light beam (9) into a spatially filtered reference beam (40) and an object beam (50). Thereafter, a reference beam tube lens (60) and an object beam tube lens (70) receive the reference (40) and the object (50) beams, respectively. A beam combiner unit (80) having a transparent substrate (82) and a beam-combining layer (84) receives the reference (40) and the object (50) beams from the reference (60) and the object (70) beam tube lenses, respectively, and combines the reference (40) and the object (50) beams to form pattern-generating beam (99) directed towards the optical detector (90) to form an interference pattern thereon.
摘要:
A computer-implemented method for analyzing digital holographic microscopy (DHM) data for hematology applications includes receiving a DHM image acquired using a digital holographic microscopy system. The DHM image comprises depictions of one or more cell objects and background. A reference image is generated based on the DHM image. This reference image may then be used to reconstruct a fringe pattern in the DHM image into an optical depth map.
摘要:
An arrangement, a system and a method for providing a sample for investigation by an imaging device are presented. The arrangement includes a substrate and a capillary forming part. The substrate includes a sample receiving region and a capillary forming region on a surface of the substrate. The sample receiving region receives the sample. The sample receiving region is adjacent to the capillary forming region. The capillary forming part includes a coverslip and a spacer. The coverslip is positioned over the capillary forming region of the surface of the substrate such that the coverslip covers the capillary forming region. The coverslip is transparent and is positioned in a Field of View of the imaging device. The spacer is positioned in between the substrate and the coverslip such that a capillary volume is formed between the coverslip, the spacer and the capillary forming region of the surface.
摘要:
An interferometric microscopy arrangement for inspecting a sample includes a first illumination source providing a collimated first light beam, a second illumination source providing a second light beam focused onto the sample, a selection filter, an interferometric unit and an optical detector system. The selection filter directs the first and the second light beam towards the sample. The first and the second light beams after sample interaction are received by the interferometric unit. The interferometric unit generates from the first light beam a first object beam and a first reference beam, filters out object information from the first reference beam. The interferometric unit directs the first object beam, the first reference beam, and the second light beam towards the optical detector system. The optical detector assembly detects an interference pattern formed from the first light beam and also detects an optical pattern formed from the second light beam.
摘要:
An interferometric microscopy arrangement for inspecting a sample simultaneously along different depths of the sample is presented. The arrangement includes an interferometric unit and a sensor assembly. The interferometric unit generates an object beam and a reference beam. The sensor assembly includes a primary beam splitter and a plurality of sensors having a first sensor and a second sensor located at different positions with respect to the primary beam splitter. The interferometric unit directs the object beam and the reference beam to form an interference pattern forming beam directed towards the sensor assembly. The primary beam splitter of the sensor assembly receives and splits the interference pattern forming beam into at least a first and a second part. The primary beam splitter then directs the first part towards the first sensor and the second part towards the second sensor.