使用整流交流电渗流在微流控通道中输送颗粒和微生物。
Transport of particles and microorganisms in microfluidic channels using rectified ac electro-osmotic flow.
机构信息
Department of Mechanical Engineering, McMaster University, Ontario L8S 4L7, Canada.
出版信息
Biomicrofluidics. 2011 Mar 30;5(1):13407. doi: 10.1063/1.3553011.
A new method is demonstrated to transport particles, cells, and other microorganisms using rectified ac electro-osmotic flows in open microchannels. The rectified flow is obtained by synchronous zeta potential modulation with the driving potential in the microchannel. Experiments were conducted to transport both neutral, charged particles, and microorganisms of various sizes. A maximum speed of 50 μm∕s was obtained for 8 μm polystyrene beads, without any electrolysis, using a symmetrical square waveform driving electric field of 5 V∕mm at 10 Hz and a 360 V gate potential with its polarity synchronized with the driving potential (phase lag=0°).
一种新的方法被证明可以使用开放式微通道中的整流交流电渗流来传输颗粒、细胞和其他微生物。整流流是通过微通道中的驱动电势与同步的zeta 电势调制获得的。实验中进行了中性、带电粒子和各种大小的微生物的传输。使用 5 V/mm 的对称方波驱动电场和 360 V 的门电势（其极性与驱动电势同步，相移=0°），在 10 Hz 时，对于 8 μm 的聚苯乙烯珠，无需任何电解，即可获得最大 50 μm/s 的速度。
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