Field-effect flow control for microfabricated fluidic networks
Field-effect flow control for microfabricated fluidic networks
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DOI：
10.1126/science.286.5441.942
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发表时间：
1999-10-29
期刊：
影响因子：
56.9
通讯作者：
van den Berg, A
中科院分区：
文献类型：
--
作者：
Schasfoort, RBM;Schlautmann, S;van den Berg, A
微细加工流体通道内的电渗流(EOF)的大小和方向可以通过只有50伏的电压产生的1.5兆伏/厘米的垂直电场来控制。一种称为“Flow FET”的微器件已经实现，其功能可与微电子学中的场效应晶体管(FET)相媲美。两个集成了沟道结的Flow FET被用来在单个EOF泵浦的沟道内产生相反的流动，从而说明了Flow FET在微流控网络中作为控制和开关元件的潜力。
The magnitude and direction of the electro-osmotic flow (EOF) inside a microfabricated fluid channel can be controlled by a perpendicular electric field of 1.5 megavolts per centimeter generated by a voltage of only 50 volts. A microdevice called a "flowFET," with functionality comparable to that of a field-effect transistor (FET) in microelectronics, has been realized. Two flowFETs integrated with a channel junction have been used to generate opposite flows inside a single EOF-pumped channel, thus illustrating the potential of the flowFET as a controlling and switching element in microfluidic networks.