This paper describes both qualitative and quantitative analysis of rapid microvortex flow generation and manipulation induced by opto-electrohydrodynamic technique. A flow named twin opposing microvortex (TOMV) is generated by infrared laser light under non-uniform alternating current (AC) electric fields. For the AC electric fields, frequency ranges from 3 kHz up to 2 MHz while the voltage is changed up to 10 V_p-p (peak-to-peak voltage). Simultaneously, the laser shines either of a pair of electrodes with a power of 0.5 W. Micron-resolution particle image velocimetry technique has been used to construct the velocity fields of the TOMV flow. The strength of the TOMV flow can be tuned by adjusting the AC voltage and frequency. The maximum measurable in-plane velocity of 54.7 m s⁻¹ outside electrode regions can be achieved with an AC signal of 9 V_p-p and 107 kHz and a laser beam of 0.5 W. This is achieved with indium tin oxide electrodes located on the top surface of a microchamber, in which the electrodes are 16 m wide and 300 m long with a spacing of 73 m between them. This three-dimensional flow generation can be used for in situ micropump and mixing.

本文描述了定性和定量分析快速光电涡流的产生和操纵的光电电动力技术。在不均匀的交流电（AC）电场下，红外激光产生了称为孪生对立微涡旋（TOMV）的流。对于交流电场，频率范围为3 kHz至2 MHz，而电压更改为10 V _p-p（峰峰值电压）。同时，激光以0.5 W的功率照射一对电极中的任何一个。微米分辨率的粒子图像测速技术已被用于构建TOMV流的速度场。可以通过调整交流电压和频率来调整TOMV流的强度。最大可测平面速度54.7ms ^-1外部电极区域可以通过9 V _p-p的交流信号和107 kHz的激光束和0.5 W的激光束实现。这是通过位于微腔顶面上的氧化铟锡电极实现的，其中电极是16米宽300 米长，间距73 他们之间。这种三维流动生成可用于原位微型泵和混合。