摘要:
An inverted microwell (102) provides rapid and efficient microanalysis system (100) and method for screening of biological particles (128), particularly functional analysis of cells on a single cell basis. The use of an inverted open microwell system (102) permits identification of particles, cells, and biomolecules that may be combined to produce a desired functional effect also functional screening of secreted antibody therapeutic activity as well as the potential to recover cells and fluid, and optionally expand cells, such as antibody secreting cells, within the same microwell.
摘要:
Plural types of cells having different dielectrophoretic properties are separated using a simple structure. There is provided a cell separation device including: a flow path through which a cell suspension flows, the cell suspension containing plural types of cells which have different dielectrophoretic properties; electrodes disposed to face each other in a direction intersecting a flow direction of the cell suspension flowing in the flow path; an electric field gradient forming portion which generates an electric field strength gradient between the electrodes; and a power supply applying an alternating voltage having a direct current component across the electrodes.
摘要:
A well, in particular an open well (14) with an upper end having a vertical axis (101), for containing a liquid and particles contained within said liquid, characterized by comprising at least two manipulation electrodes (1, 2, 3, 31, 32, 36, 17, 40, 41) able to be powered by electrical voltages, in particular alternating electrical voltages, so as to manoeuvre particles within the well by means of the dielectrophoretic effect. A platform comprising a plurality of wells as described above and a method for using said well.
摘要:
A method of collecting, detecting and enumerating microorganisms in a fluid comprising subjecting a sample of the fluid to dielectrophoresis and collecting the microorganisms onto a microelectrode, scanning the microelectrode using a scanning laser and determining the number of microorganisms present on the microelectrode.
摘要:
A method of treating an invert emulsion drilling fluid, the method including pumping the drilling fluid to an electrophoresis unit that includes a positively charged electrode and a negatively charged electrode, applying a voltage between 200 V and 5000 V across the two electrodes to deposit water and solids on one of the charged electrodes, and removing deposited solids and water from the collection electrode is disclosed. An apparatus for treating an invert emulsion drilling fluid, the apparatus including a bath, a drum disposed in the bath, a power supply capable of applying a voltage between the housing and the drum in the range of 200 V to 5000 V, a motor coupled to the drum to rotate the drum at a predetermined speed, and a scraper having a first position in which the scraper contacts the rotating drum to remove deposited solids and water and a second position in which the scraper is retained away from the drum is also disclosed.
摘要:
Methods and apparatus for preparing a smear for cytopathology or other analysis. In a representative embodiment, cells of a sample are subjected to a dielectrophoretic force to segregate the cells into two or more zones of a surface. The particles are attached to the surface, thereby defining a “segregated smear”. The segregated smear is then fixed and stained for cytopathology analysis.
摘要:
Methods and relative devices are illustrated for generating time-variable electric fields suitable for determining the creation of closed dielectrophoretic cages able to trap inside even single particles without the cages being necessarily positioned at relative minimum points of the electric field.
摘要:
Plural types of cells having different dielectrophoretic properties are separated using a simple structure. There is provided a cell separation device including: a flow path through which a cell suspension flows, the cell suspension containing plural types of cells which have different dielectrophoretic properties; electrodes disposed to face each other in a direction intersecting a flow direction of the cell suspension flowing in the flow path; an electric field gradient forming portion which generates an electric field strength gradient between the electrodes; and a power supply applying an alternating voltage having a direct current component across the electrodes.