Design and fabrication of �respond-react� micro-pumps which are capable  of turning on by specific external signals (�respond�) and pumping the  fluid in their vicinity (�react�) without external power source are  highly desired for various applications such as microchips, drug  delivery, artificial control of fluid and particles. Report of such  system, however, is limited. Previously reported systems are  bimetallic catalysts which decompose toxic hydrogen peroxide or  hydrazine to produce electroosmotic flow of fluid and migration of  tracers. However, the idea that micro-pump consumes chemical energy and  then do work with turn on and off property has not been discovered  fully. Our recent research successfully showed that other principle such  as polymerization/depolymerization behavior, if carefully designed,  could be used to generate fluidic flow. To further explore the  possibility of making this type of microfluidic pumps, in this article,  we demonstrate the principle of dynamic formation/dissociation of Schiff  base and simple photo acid generator (PAG) could also be utilized to serve this purpose.

Proton and UV initiated “respond-react” micro pumps

244th National Meeting (2012)

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