Tuneable hydrophoretic separation using elastic deformation of poly(dimethylsiloxane)
Tuneable hydrophoretic separation using elastic deformation of poly(dimethylsiloxane)
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DOI：
10.1039/b820364d
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发表时间：
2009-01-01
期刊：
影响因子：
6.1
通讯作者：
Park, Je-Kyun
中科院分区：
文献类型：
--
作者：
Choi, Sungyoung;Park, Je-Kyun
本文介绍了一种以聚二甲基硅氧烷（PDMS）为材料制备的用于疏水分离的弹性体微通道的调谐方法。通过紧固螺栓，在两个丙烯酸基板之间的弹性体微通道上施加均匀的压缩应变。弹性体微通道可以在压缩过程中改变其横截面，同时调整疏水有序准则。利用共聚焦显微镜和有限元方法研究了通道截面在压缩作用下的变化。通过按压通道进行疏水分离，我们实现了颗粒直径从7 μ m到2.5 μ m的分离标准调整。
This paper demonstrates a method for tuning elastomeric microchannels for hydrophoretic separation made in poly(dimethylsiloxane) (PDMS). Uniform compressive strain is imposed on the elastomeric microchannel between two acrylic substrates by fastening the bolts. The elastomeric microchannel can change its cross-section during compression, simultaneously tuning the criterion for hydrophoretic ordering. The change of the channel cross-section under compression is studied using a confocal microscope and finite element method (FEM). By pressing the channel for hydrophoretic separation, we achieved tuning of the separation criterion from 7 to 2.5 mu m in particle diameter.