Application of chemical imaging sensor to electro generated pH distribution

Tatsuo Yoshinobu, Hiroshi Iwasaki, Motoi Nakao, Satoshi Nomura, Tsuyoshi Nakanishi, Shuji Takamatsu, Katsuhiko Tomita

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The scanning-laser-beam chemical imaging sensor was applied for the observation of electrogenerated pH distribution on a mesoscopic scale. Electrolysis was carried out in potassium chloride solution and the resulting pH distribution was imaged with a 0.2 mm spatial resolution. As a result, the generation of the pH distribution and its expansion to the bulk region were clearly imaged. By examining the pH image, it was also possible to obtain the pH values in the pH-distributed regions separately from those in the bulk region.

Original languageEnglish
Pages (from-to)L353-L355
JournalJapanese Journal of Applied Physics
Issue number3 B
Publication statusPublished - 1998


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