A micropump driven by electrochemically produced short-lived bubbles

[摘要] A new working principle for electrochemical micropump with the gas termination time as short as 100 microseconds is presented. It is based on water electrolysis with a fast change of voltage polarity. A simple electrochemical micropump is designed to demonstrate this pumping principle. The device consists of a working chamber with metallic electrodes, inlet and outlet diffusers, and channels for liquid. The chamber and the channels are filled with the electrolyte that plays a role of the pumped liquid. The pump was tested in different regimes. One of these regimes related to formation and termination of short-lived microbubbles is especially promising. Long time stability of the electrodes is demonstrated.

[发布机构] Yaroslavl Branch of the Institute of Physics and Technology RAS, Universitetskaya 21, Yaroslavl; 150007, Russia^1;MESA+ Institute for Nanotechnology, University of Twente, PO 217, Enschede; 7500 AE, Netherlands^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Long time stabilities;Metallic electrodes;Micro pump;Microbubbles;Termination time;Voltage polarity;Water electrolysis;Working chambers