Fabrication and Characterization of Polymer-Based Microchip Integrated with NH4+-ISFET Using a Small Diameter Wire as a Template of Channel

Takashi Masadome, Mayumi Ishikawa, Shin Ichi Wakida

Research output: Contribution to journalArticle

2 Citations (Scopus)


The NH4+-ion-sensitive field effect transistor (ISFET) in a batch system and the polymer-based microchip with NH 4+-ISFET showed almost the similar performance in low detection limits, dynamic range of the calibration curve, the slope sensitivity, and the stability of the potential. From the results, the polymer-based microchip with ISFET fabricated using polystyrene plates and stainless wires as a template of channel can be useful for several applications in a microchip technology.

Original languageEnglish
Pages (from-to)377-384
Number of pages8
JournalAnalytical Letters
Issue number3
Publication statusPublished - 2004 Apr 13



  • Ion-sensitive field-effect transistor
  • NH sensor
  • Polymer-based microchip
  • Polystyrene
  • Small-diameter wire

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Spectroscopy
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry

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