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A thermally driven phase-change nonmechanical micropump has been investigated theoretically and experimentally. This micropump consisted of a microchannel and a number of uniformly-spaced heating elements along the channel. The pumping of fluids in such a pump was realized by using the actuation of a moving vapour slug (bubble) generated by suitably phased heating elements. The pumping mechanism was studied theoretically by considering a liquid-filled tube heated locally by a moving heatingdoi:10.1088/0960-1317/11/6/314 fatcat:w6o3idhwlrerfddh23xuumdpmy