FlowFET
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A flowFET is a microfluidic component which allows the rate of flow of liquid in a microfluidic channel to be modulated by the electrical potential applied to it. In this way, it behaves as a microfluidic analogue to the field effect transistor, except that in the flowFET the flow of liquid takes the place of the flow of electric current. Indeed, the name of the flowFET is derived from the naming convention of electronic FETs (e.g. MOSFET, FINFET etc.).
A flowFET is a microfluidic component which allows the rate of flow of liquid in a microfluidic channel to be modulated by the electrical potential applied to it. In this way, it behaves as a microfluidic analogue to the field effect transistor, except that in the flowFET the flow of liquid takes the place of the flow of electric current. Indeed, the name of the flowFET is derived from the naming convention of electronic FETs (e.g. MOSFET, FINFET etc.). \nu_{EOF}={\epsilon \over \eta} \zeta E In a FlowFET, the zeta potential between the channel walls and the fluid can be altered by applying an electrical field perpendicular to the channel walls. This has the effect of altering the motive force experienced by the mobile liquid atoms in the double layer. This change in the zeta-potential can be used to control both the magnitude and direction of the electro-osmotic flow in the microchannel. The controlling voltage need only be in the range of 50 V for a typical microfluidic channel, since this correlates to a gradient of 1.5 MV/cm due to the channel size.
Text derived from https://en.wikipedia.org/w/index.php?oldid=1296203588 under CC BY-SA 4.0; modifications have been made.