Optically driven micropump with a twin spiral microrotor
Optically driven micropump with a twin spiral microrotor
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DOI：
10.1364/oe.17.018525
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发表时间：
2009-10-21
期刊：
影响因子：
3.8
通讯作者：
Saito, Yohei
中科院分区：
文献类型：
--
作者：
Maruo, Shoji;Takaura, Akira;Saito, Yohei
利用双光子微加工技术研制了一种光驱动微泵，该泵利用粘性阻力作用于旋转轴上带有左旋和右旋螺旋叶片的旋转微转子。结果表明，双螺旋微转子比单螺旋微转子具有更高的转速。在500 mW的激光功率下，转速达到560 rpm。将双螺旋微转子应用于U形微通道粘性微泵中。为了泵送流体，位于U形微通道拐角处的双螺旋微转子通过聚焦激光束而旋转。采用基于Navier-Stokes方程的有限元法对U形微通道内的流场进行了分析，以优化微通道的形状。证实了双螺旋微转子的旋转产生了单向层流。最后，利用空间光调制技术，采用双光阱系统驱动双螺旋微转子串联微泵。(c)2009年美国光学学会
An optically driven micropump that employs viscous drag exerted on a spinning microrotor with left- and right-handed spiral blades on its rotational axis has been developed using two-photon microfabrication. It was demonstrated that the twin spiral microrotor provides a higher rotation speed than a single spiral microrotor. The rotation speed reached 560 rpm at a laser power of 500 mW. The twin spiral microrotor was also applied to a viscous micropump with a U-shaped microchannel. To pump fluid, the twin spiral microrotor located at the corner of the U-shaped microchannel was rotated by focusing a laser beam. The flow field inside the U-shaped microchannel was analyzed using the finite element method (FEM) based on the Navier-Stokes equation to optimize the shape of the microchannel. It was confirmed that the rotation of the twin spiral microrotor generated a unidirectional laminar flow. Finally, a tandem micropump using two twin spiral microrotors was driven by a dual optical trapping system using a spatial light modulation technique. (c) 2009 Optical Society of America