title: Impedance pump
text: # Impedance pump
  
  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.
  
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