摘要:
A microfluidic device for isolation objects from a liquid suspension comprises at least one fluid inlet and at least one fluid outlet, at least one fluid channel fluidically connecting the at least one fluid inlet to the at least one fluid outlet, a plurality of passive hydrodynamic trapping sites arranged along the at least one fluid channel, each trapping site configured to trap a defined number of objects from a liquid suspension flowing along the at least one fluid channel, and a plurality of nozzle channels, wherein each nozzle channel is in fluidic communication with one of the trapping sites and fluidically connects this trapping site with an associated nozzle orifice. A force may be applied concurrently to the trapped objects and the liquid columns in the nozzle channels so that a liquid aliquot containing the defined number of objects is ejected from each nozzle orifice.
摘要:
The invention relates to a method for operating a direct-oxidation fuel cell, in which at least one fluidic fuel is transported from a fuel reservoir via a fluid distribution structure to a membrane electrode unit, wherein the transport of the fuel takes place passively, i.e. without convection. Furthermore, the invention relates to a corresponding direct-oxidation fuel cell.
摘要:
The invention relates to a method for operating a direct oxidation fuel cell, in which the fuel cell is in general supplied with methanol via a transport apparatus for the fuel. The invention likewise relates to a corresponding arrangement comprising a direct oxidation fuel cell, a fuel reservoir and at least one apparatus for transporting the fuel through the fuel cell.
摘要:
An apparatus for dispensing one or more cells or particles confined in a free flying droplet comprises a droplet generating device configured to eject out of an orifice a free flying droplet of a suspension of cells or particles. The droplet generating device comprises a branch-less one-way channel having the orifice at one end thereof. A device for detecting information on cells or particles located in an observation volume of the suspension within the branch-less one-way channel is provided. An ejected droplet is directed to a first position or a second position depending on the detected information.