Provided is a channel device that is capable of increasing the concentration of fine particles in a liquid only by use of fluid-dynamic flows without relying on electrostatic interactions. A channel device (1) in accordance with an embodiment of the present invention includes: a main channel (11) configured to allow a liquid containing fine particles to flow therethrough; a chamber (15) that is provided at an end of the main channel (11) and that is configured to store target fine particles which have increased in concentration; and a side channel (12) that is connected to a side face of the main channel (11) and that is configured to allow unwanted liquid to drain therethrough, wherein at least one of a height and a width of the side channel (12) is smaller than a particle size of the fine particles.

The present invention relates to a process for the electro extraction of molecules from a moving fluid donor phase into an acceptor phase, comprising the steps of: providing an electrically conductive donor phase moving at a first flow velocity and in electrically conductive contact with a first electrode, providing an electrically conductive acceptor phase in direct contact and immiscible with the donor phase, in electrically conductive contact with a second electrode; and providing a supporting or confining phase guide pattern to keep a defined interface between donor phase and acceptor phase, and (d) applying an electrical field between the first and the second electrode.

The present disclosure relates to methods and devices that may be used to separate components from one or more samples.

Provided is a channel device that is capable of increasing the concentration of fine particles in a liquid only by use of fluid-dynamic flows without relying on electrostatic interactions. A channel device (1) in accordance with an embodiment of the present invention includes: a main channel (11) configured to allow a liquid containing fine particles to flow therethrough; a chamber (15) that is provided at an end of the main channel (11) and that is configured to store target fine particles which have increased in concentration; and a side channel (12) that is connected to a side face of the main channel (11) and that is configured to allow unwanted liquid to drain therethrough, wherein at least one of a height and a width of the side channel (12) is smaller than a particle size of the fine particles.

A method of determining diffusion coefficient of one or more components in a polydisperse sample is provided. The method comprising the steps of: introducing an auxiliary fluid flow into a fractionation channel; introducing the polydisperse sample comprising one or more components into the fractionation channel; allowing the sample and the auxiliary fluid to create a combined flow; fractionating the combined flow into two or more fractions by diffusive sizing; subsequently separating two or more components from each fraction by creating a distribution of the components within a separation channel; detecting a characteristic of each the two or more components in each fraction; and comparing the characteristic of each component in each fraction in order to determine the diffusion coefficient of each of the one or more components in the polydisperse sample.

Techniques for treating a detrimental physical condition are disclosed. In one embodiment, a method includes processing one or more samples obtained from the individual through use of one or more microfluidic chips to provide data indicating one or more constituents present within the one or more samples, and processing the data to determine a quantity of at least one constituent that indicates the detrimental physical condition of the individual. Next, the method determines at least one dosage of at least one treatment agent for mitigation of the detrimental physical condition based on the quantity of the at least one constituent that indicates the detrimental physical condition, and facilitates an administration of the at least one dosage for mitigation of the detrimental physical condition.