Development of Electrochemical Pump Consisting of Cu2+-Poly(acrylic acid) Gel

研制了一种聚丙烯酸凝胶掺杂铜离子的电化学泵。当Au管（圆柱体）中的凝胶（活塞）膨胀时，该泵在Cu 2+还原时放电，而当凝胶塌陷时，该泵在Cu氧化时充电。该泵可以精确地在几百pl s-1的量级的流速下操作。该泵可以在低能量下操作并且可以容易地减小尺寸。

An electrochemical pump consisting of poly(acrylic acid) gel incorporating Cu2+ ion was developed. The pump discharges upon reduction of Cu2+ as the gel (piston) in a Au pipe (cylinder) expands, whereas it charges upon oxidation of Cu as the gel collapses. The pump can precisely be operated at a flow rates in an order of a few hundreds pl s-1. The pump can operate at low energy and can readily be downsized.