Abstract

Electroosmotic pumps are the simplest among all the pumps, consisting of two electrodes separated by a porous membrane. Most use Pt electrodes and operate at high voltages, electrolyzing water. Because evolved gas bubbles adhere and block parts of the electrodes and the membrane, steady pumping rates are difficult to sustain, and if it pumping in the closed system, the oxygen and hydrogen will mix together and it’s not safe. The use of electrochemical reaction such as Ag/Ag2O to operate the pump non-gassing with higher efficiency. It has simple structure, battery operable, flow rate is linear to voltage and to area of the pump. The pump is now curretly used to develop drug pumps such as insulin patch pump and implantable morphine pump.

Full Text
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