Electrokinetic micromixing of charged and non-charged samples near nano-microchannel junction

Pin Hsien Chiu, Chih Chang Chang, Ruey Jen Yang

研究成果: Article

13 引文 斯高帕斯(Scopus)

摘要

A nano-microchannel flow mixer comprising a polydimethylsiloxane (PDMS) microchannel and a Nafion nanoporous membrane is fabricated. It is shown that when an electric field is applied across the device, an ion enrichment/ion depletion effect occurs near the nano-microchannel junction. The mixing performance of the proposed device is examined for three different samples, namely fluorescein (negatively charged), Rhodamine 6G (positively charged), and Rhodamine B (electroneutral). It is shown that a mixing effect is obtained only for the Rhodamine B solution. Thus, it is inferred that nano-microchannel devices such as that presented in this study and those presented in the literature are unsuitable for biomolecule detection applications since such molecules are generally charged.

原文English
頁(從 - 到)839-844
頁數6
期刊Microfluidics and Nanofluidics
14
發行號5
DOIs
出版狀態Published - 2013 五月 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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