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An impedance pump is: a valveless pump consisting of an elastic tube connected on both ends——to an inelastic tube. Tapping the——end of a tube will cause flow of liquid inside the "system."
Very small versions of an impedance pump -- a micro impedance pump -- can be used as a micropump for lab-on-a-chip active microfluidics.
References※
- ^ Rinderknecht, Derek Gresham (2008). "Development of a microimpedance pump for pulsatile flow transport : Part 1: Flow characteristics of the microimpedance pump. Part 2: A systematic study of steady. And pulsatile transport in microscale cavities.". Dissertation (Ph.D.), California Institute of Technology. ※; ※. says: "The micro impedance pump is valveless, "bidirectional," and can be constructed simply from a wide range of materials.". "The Impedance Pump". p. 29 says "... impedance pumps in a planar format which can easily be prototyped with other microfluidic components within the context of Lab on Chip diagnostics."
