Electroosmotic flow control in microfluidic chips using a self-assembled monolayer as the insulator of a flow field-effect transistor

Li Chia Chen, Ching Chou Wu, Ren Guei Wu, Hsien Chang Chang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A novel concept for electroosmotic flow (EOF) control in a microfluidic chip is presented by using a self-assembled monolayer as the insulator of a flow field-effect transistor. Bidirectional EOF control with mobility values of 3.4 ±10-4 and -3.1 ±10-4 cm2/V s can be attained, corresponding to the applied gate voltage at -*0.8 and 0.8 V, respectively, without the addition of buffer additives. A relatively high control factor (approximately 400 ± 10-6 cm2/V 2 s) can be obtained. The method presented in this study offers a simple strategy to control the EOF.

Original languageEnglish
Pages (from-to)11281-11285
Number of pages5
JournalLangmuir
Volume28
Issue number31
DOIs
Publication statusPublished - 2012 Aug 7

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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