Development of a planar type ion sensor for urine testing

K. Sakai, T. Yamamoto, R. Sugai, T. Kiwa, K. Tsukada

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1 Citation (Scopus)


A new planar-type ion sensor with an Ag/AgCl electrode without a standard solution and liquid junction was proposed for urine testing. The proposed sensor integrates a reference electrode onto a single chip, and thus, it is possible to manufacture a compact planar-type ion sensor. The potential change of the developed sensor is proportional to the Na+ and K+ concentration. Although the Ag/AgCl electrode without a standard solution and liquid junction reacted to Cl-, AC impedance analysis was used to compensate the effect of Cl-on the potential change. Therefore, the proposed planar-type ion sensor can be used for routine urine testing because the proposed sensor is low cost, disposable, and also has a simple structure.

Original languageEnglish
Pages (from-to)706-710
Number of pages5
JournalSensor Letters
Issue number8
Publication statusPublished - Aug 1 2015



  • AC impedance
  • Ion sensor
  • Reference electrode
  • Urine testing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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