Design of movable contactless conductivity detector for microchip capillary electrophoresis

  • Hai Feng Zhang
  • , Xiao Wei Liui
  • , Zhi Cheng Peng
  • , Xi Lian Wang
  • , Wei Wang
  • , Yu Feng Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper a novel detecting device based on movable contactless conductivity detector was described. The stainless steel mould replaces the silicon and nickel mould to fabricate the capillary electrophoresis chip and overcome the disadvantage of complicated technology and frangibility. The parameters of hot embossing were optimized. In the paper a sandwich electrode structure was proposed. The electrode structure can minimize the stray capacitive direct coupling between the electrodes. The analytical performance of the detector based on the USB detection system was demonstrated by the detection of alkali metal ions. Detection limits ranging from 20 down to 5 Jμm were obtained.

Original languageEnglish
Title of host publication4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009
Pages190-193
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
Event4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009 - Shenzhen, China
Duration: 5 Jan 20098 Jan 2009

Publication series

Name4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009

Conference

Conference4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009
Country/TerritoryChina
CityShenzhen
Period5/01/098/01/09

Keywords

  • Capillary electrophoresis
  • Contactless conductivity detection
  • Electronic circuit
  • Hot embossing
  • PMMA

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