Electrophoresis separation and electrochemical detection on a novel line-based microfluidic device

Yi Chi Wei, Shin Yu Su, Lung-Ming Fu, Che Hsin Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

This paper describes a line-based microfluidic system for rapid and low-cost electrophoresis (CE) separation and electrochemical (EC) detection of ion samples. Instead of using liquid channel for sample separation, thin polyester threads of various diameters are used as the routes for separating the samples with electrophoresis. Hot-pressed PMMA chip with protruding sleeper structures are adopted to set up the polyester threads and for electrochemical detecting the ion samples on the thread. Plasma treatment greatly improves the wetability of thin threads and surface quality of the threads. The measured electrical currents on plasma treated threads are 10 times greater than the threads without treatment. Results indicate that nice redox signals can be obtained by measuring ferric cyanide salt on the polyester thread. The estimated detection limit for EC sensing of potassium ferricyanide (K 3Fe(CN) 6) is around 50 μM. Mixed ion samples of Cl -, Br - and I - are successfully separated and detected using the developed line-based microfluidic device.

Original languageEnglish
Title of host publication2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
Pages104-107
Number of pages4
DOIs
Publication statusPublished - 2012 May 7
Event2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012 - Paris, France
Duration: 2012 Jan 292012 Feb 2

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
CountryFrance
CityParis
Period12-01-2912-02-02

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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