摘要:
Provided is a microparticle measurement device that can deliver a liquid that is used in the analysis of microparticles in a stable manner. The microparticle measurement device includes a plurality of first tank units to which a liquid is supplied from the outside, and which are respectively connected in parallel, and a bulb unit that is connected to the plurality of first tank units, and which switches to a state in which it is possible to deliver the liquid to a flow channel through which microparticles flow. According to this microparticle measurement device, in addition to performing liquid delivery from a portion of first tank units, in which the replenishment of liquid has been completed, to a flow channel, it is possible to supply liquid from the outside to first tank units other than the first tank units that are delivering liquid.
摘要:
Apparatus and methods for detecting, characterizing, and compensating motion-related error of moving micro-entities are described. Motion-related error may occur in streams of moving micro-entities, and may represent a deviation in and expected arrival time or an uncertainty in position of a micro-entity within the stream. Motion-related error of micro-entities is observed in a flow cytometer, e.g., as pulse jitter, and is found to have a functional dependence on a parameter of the system. The pulse jitter can be compensated, according to one embodiment, by adjusting data acquisition observation windows. For the flow cytometer, a reduction of pulse jitter can improve measurement accuracy, resolution of doublets, system throughput, and enable an increase in an interrogation region for probing the micro-entities.
摘要:
The invention describes a method for isolating one or more genetic elements encoding a gene product having a desire activity, comprising the steps of: (a) compartmentalising genetic elements into microcapsules; and (b) sorting the genetic elements which express the gene product having the desired activity; wherein at least one step is under microfluidic control. The invention enables the in vitro evolution of nucleic acids and proteins by repeated mutagenesis and iterative applications of the method of the invention.
摘要:
An apparatus for sorting and orienting sperm cells includes a pair of walls in confronting arrangement and forming a flow chamber having an inlet, a downstream outlet, and an intermediate detector region. The inlet receives first and second spaced apart streams of input fluid and a third stream of sample fluid containing the cells to be sorted. The first and second streams have respective flow rates relative to the third stream, such that the third stream is constricted, forming a relatively narrow sample stream, so that the cells are oriented parallel to the walls. A detector detects the desired cells and a sorter downstream of the detector, sorts the desired cells from the stream.
摘要:
There is presented a system 10,100 for sorting microscopic objects 76, 78, 80, where the system comprises a fluid channel 66 with an inlet 68 and an outlet 70, where the fluid channel is arranged for allowing the fluid flow to be laminar. The system furthermore comprises a detection system 52 which enables detecting microscopic objects in the fluid channel and furthermore enables determining their position. The system furthermore comprises a controller 67, such as a computer, which receives the positions and accordingly controls a source of light beams so as to "shoot" light beams towards selected microscopic objects so as to "push" them into a new position. The system thereby enables sorting the selected microscopic objects. In more specific embodiments, the detection system furthermore assigns different categories to different microscopic objects, so as to enable sorting based on multiple categories.
摘要:
The present disclosure provides improved optical systems for particle processing (e.g., cytometry including microfluidic based sorters, drop sorters, and/or cell purification) systems and methods. More particularly, the present disclosure provides advantageous micro-lens array optical detection assemblies for particle (e.g., cells, microscopic particles, etc.) processing systems and methods (e.g., for analyzing, sorting, processing, purifying, measuring, isolating, detecting, monitoring and/or enriching particles.
摘要:
The various embodiments disclosed herein utilize multiple lasers that have different wavelengths and a single detection path. The lasers are mounted orthogonal to one another so that one laser will provide a forward angle light scatter (FALS) signal in the detection path, and one laser will provide a side scatter signal in the detection path (i.e., the single detection optics are approximately in-line with the FALS laser and approximately orthogonal to the side scatter laser), The single detector path spectrally separates the forward and side scatter signals prior to applying them to their respective detectors for measurement,
摘要:
The invention describes a method for isolating one or more genetic elements encoding a gene product having a desire activity, comprising the steps of: (a) compartmentalising genetic elements into microcapsules; and (b) sorting the genetic elements which express the gene product having the desired activity; wherein at least one step is under microfluidic control. The invention enables the in vitro evolution of nucleic acids and proteins by repeated mutagenesis and iterative applications of the method of the invention.