| 摘要 |
A micro-reactor is provided with a mixture of channels having larger cross-sectional areas ( 17',22',25',27',31',33 ') and channels having smaller cross-sectional areas ( 40 a', 40 b', 40 c'). The smaller channels ( 40 a', 40 b', 40 c') resist liquid movement driven by hydrostatic force but allow liquid movement driven by electro-osmotic force. Accordingly liquid flow is almost entirely driven by electro-osmotic force. The smaller channels ( 40 a', 40 b', 40 c') are formed by etched grooves which are closed by a planar surface 13 . This allows the cross-sectional areas of the smaller channels to be closely and reproducibly controlled.
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