Fabrication of an electrochemical sensor array for 2D H2O 2 imaging

Nahoko Kasai, Akiyoshi Shimada, Nyberg Tobias, Keiichi Torimitsu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


To achieve accurate real-time 2D H2O2 distribution imaging, we fabricated an H2O2 sensor array by dispensing small quantities of enzyme solution very accurately onto electrodes in an electrode array. We confirmed the accuracy of the dispensing technique. We then investigated the responses of each sensor to H2O2 injection using a 64-channel multipotentiostat and found they varied by 20%. Real-time 2D H2O2 imaging was therefore successfully realized by using our flow cell system. This sensor array will be useful for the non-invasive, real-time monitoring of the H2O2 distribution in biological samples.

Original languageEnglish
Pages (from-to)628-631
Number of pages4
Issue number8
Publication statusPublished - 2006 Aug


  • Horseradish Peroxidase
  • Hydrogen Peroxide
  • Multichannel Electrochemical Sensor


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