MANFRED KAGE / SCIENCE PHOTO LIBRARY MANFRED KAGE / SCIENCE PHOTO LIBRARY
Micropump. Macro photograph of an electrostatic membrane micropump. The pump works by creating an alternating electrostatic charge between the cover glass and the black pump membrane beneath it. The alternating charge makes the membrane move back and forth above a fluid chamber. This alternately draws in and pumps out the fluid. Reverse flow is prevented by small valves. The pump is 7mm each side, and 2mm deep (without fittings). It has a maximum flow rate of 150 microlitres per minute, and a peak pressure of 100 millibar. This type of pump has a variety of uses in the fields of medicine and biological research.
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