Presentation Information
[23p-1BM-9]Fabrication of implantable multi-ion image sensor for Mg2+ selective detection in the living brain
〇Yuto Nakamura1, Mai Madokoro1, Hideo Doi1, Tomoko Horio1, Yasuyuki Kimura1, Yong-Joon Choi1, Kazuhiro Takahashi1, Toshihiko Noda1, Kazuaki Sawada1 (1.Toyohashi Univ. of Tech.)
Keywords:
Ion image sensor,Bio sensor,Magnesium ion
In this study, we fabricated and evaluated implantable multi-ion image sensor that can measure Mg2+ and Ca2+ concentrations. Since the Mg2+-sensitive membrane has high sensitivity to Ca2+ as well as Mg2+, we thought that it would be possible to discriminate between the two by painting the Ca2+-sensitive membrane, which is highly selective to coexisting ions. The evaluation results showed that the system actually succeeded in discriminating between Mg2+ and Ca2+ concentration changes, providing a prospect for the quantification of Mg2+ concentration changes and the simultaneous measurement of multiple ion species.