摘要:
A method for operating a cryostorage device (100), especially for biological samples, is described which comprises a sample carrier (10) to receive at least one sample (11) and a data storage (20), wherein data are inductively transmitted from the data storage device (20) into a wireless transmission channel (40) and/or conversely using a resonant circuit (30) connected to the data storage device (20).
摘要:
Disclosed is a process for manipulating microscopic dielectric particles in which particles are exposed to an electric field. In disadvantaged processes the particles are exposed to inhomogeneous electric field and are polarized by them. The polarized particles are moved in the direction of higher field strength. These processes permit no reversal of the traveling direction of the particles. The particles are enriched at the electrode so that they cannot be retained in free space. In the invented process the particles are exposed to high-frequency field traveling in one or more prescribed direction, by which the particles are subject to a force which sets them in a motion that is strongly synchronous to the field. With the aid of a device for carrying out the invented process, the particles can be manipulated very flexibly. By means of linearly or circularly disposed electrodes, the particles can be moved on linear paths in any direction including through branched microstructures, they can be separated according to their dielectric properties and retained without contact. Applications are in the fields of biotechnology and molecular separation, focussing and microtransport technology.
摘要:
A dielectric micromechanical element the moveable component of which (hereinafter referred to as rotor) is an electrically homogeneous or inhomogeneous dielectric. The rotor is driven via one or more electric field vectors which are generated via electrode arrangements by switched voltages and/or by triggering the electrodes with phase-shifted voltages. On at least one side of the rotor and/or inside the rotor the electrodes form a linear or curved row of electrodes.
摘要:
A method of discharging a fluid flow with suspended microparticles from a fluidic microsystem (10) is described, whereby the fluid flow converges with at least one output flow to form a discharge flow at the end of a discharge channel (14) of the microsystem, and the discharge flow is delivered through a conduction element (19). A microsystem with a flow output device for implementation of this method is also described.
摘要:
A method of separating mixtures of microscopic dielectric particles in sunsions in an apparatus for carrying the method. A mixture of particles is forced onto guide paths by dielectrophoretic forces or by a flow of the suspension medium with an additional force, which is provided to compensate the force causing the particles to move along the guide paths for specific particle species causing the specific particle species to be fed out from the mixture of particles. The apparatus may be integrated on surfaces of silicon wafers at low cost and in mass-production numbers, and is suitable for isolating minute particles such as biological cells, cell organelles, bio molecules as well as organic dielectric particles.
摘要:
A cell transfer method is described, in which transfer of at least one biological cell (21) describing a natural cell locomotion between a carrier (80) and a probe (10) is provided, and whereby positioning the probe (10) and the carrier (80) relative to one another in a transfer arrangement is provided, in which transfer of the cell (21) takes place due to the natural cell locomotion. Probes and cell manipulators for transferring biological cells are also described
摘要:
A cryostorage device (100) is described that includes at least one data storage device (200) and at least one sample receptacle device (300) with at least one sample chamber (301, 302, etc.) for the uptake of a suspension sample, the at least one sample chamber (301, 302, etc.) being connected to the data storage device (200) and having a elongated, hollow shape that extends from an inlet end (320) over a predetermined length to an outlet end (330) and being attached to the at least one data storage device (200) in a flexible and movably hanging manner.
摘要:
A device for amperometric adjustment of an ion concentration in an adjustment solution comprises at least three chamber-shaped electrolyte regions, each with a control electrode and diffusion depressant means and which can be filled with electrolytes, whereby all electrolyte regions can be brought into contact with the adjustment solution in such a way that, when current flows through the control electrodes, ions can be transported from the electrolyte solutions through the diffusion depressant means into the adjustment solution or in the reverse direction, and means for supplying each electrolyte region with control currents. The device is designed for adjusting the pH value and/or an ion concentration of the adjustment solution different to the hydrogen ion concentration. At least two or all electrolyte regions are supported by a joint holding means.
摘要:
The present invention relates to a dielectric motor which is driven by means of electric fields. The motor is distinguished by two or more dielectric rotors being disposed in a central region which is surrounded by several electrodes.The rotors may be made of different dielectric materials and be electrically axially asymmetric in design. They are driven by continuously or discontinuously rotating electric fields. Depending on the geometric and electric design, very variable rotation conditions can be achieved, which can be simply controlled via the frequency of the rotating fields. The motor is suited for switch and drive purposes and can be utilized to construct microdosing devices, pumps and valves.
摘要:
A cryosubstrate, in particular for cryopreservation of biological specimens, having at least one solid-phase element is described. This solid-phase element is equipped for adherent fixation of specimens, with the solid-phase element comprising at least one carrier filament. Furthermore, a method of cryopreservation of biological specimens using such a cryosubstrate is described.