Impedance pump

{{one source |date=March 2024}}

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.

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.

[http://resolver.caltech.edu/CaltechETD:etd-05292008-115810];

[https://thesis.library.caltech.edu/5215/].

says:

"The micro impedance pump is valveless, bidirectional, and can be constructed simply from a wide range of materials.".

[https://thesis.library.caltech.edu/5215/7/07ch1theimpedancepump.pdf "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."