Title :
Configuration for micro pH sensor
Author :
Kim, Y.J. ; Lee, Y.C. ; Sohn, B.K. ; Kim, C.S. ; Lee, J.H.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
A fully integrated pH sensor with a built-in reference electrode is proposed. An iridium oxide microelectrode and a pH-insensitive field-effect transistor are used as a pH sensor and a reference electrode, respectively. The sensitivity of the proposed device matches well with the estimated value to within 0.3 mV/pH deviation.
Keywords :
chemical sensors; microelectrodes; microsensors; pH measurement; built-in reference electrode; micro pH sensor; microelectrode; pH-insensitive field-effect transistor; sensitivity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030977
