High performance microfluidic capillary electrophoresis devices

Lung Ming Fu, Jik Chang Leong, Chiu Feng Lin, Chang Hsien Tai, Chien Hsiung Tsai

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


This paper presents a novel microfluidic capillary electrophoresis (CE) device featuring a double-T-form injection system and an expansion chamber located at the inlet of the separation channel. This study addresses the principal material transport mechanisms depending on parameters such as the expansion ratio, the expansion length, the fluid flow. Its design utilizes a double-L injection technique and combines the expansion chamber to minimize the sample leakage effect and to deliver a high-quality sample plug into the separation channel so that the detection performance of the device is enhanced. Experimental and numerical testing of the proposed microfluidic device that integrates an expansion chamber located at the inlet of the separation channel confirms its ability to increase the separation efficiency by improving the sample plug shape and orientation. The novel microfluidic capillary electrophoresis device presented in this paper has demonstrated a sound potential for future use in high-quality, high-throughput chemical analysis applications and throughout the micro-total-analysis systems field.

Original languageEnglish
Pages (from-to)405-412
Number of pages8
JournalBiomedical Microdevices
Issue number3
Publication statusPublished - 2007 Jun

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Molecular Biology


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