Abstract
We succeeded in making thermal driven cyclic flow in a micro-nano chemical chip including vapor-liquid phase transition process. Laplace pressure pushing liquid water into extended nanochannels causes continuous vapor removal from nanochannels to a microchannel and liquid collection into nanochannels. We employed extended nanopillars as a condensation part in order to obtain efficient capillary condensation. We are also trying the application of the cyclic flow as a heat transfer device toward realization of a future nonelectric cooling system "extended nano heat pipe." © 2009 CBMS.