[17p-P11-1~37] 12.7 Biomedical Engineering and Biochips

[17p-P11-30] A multi-well structure of light-addressable potentiometric sensor for measurement of a plurality of liquid samples

〇(D)HoangAnh Truong^1,3, Carl Frederik Werner^2,3, Koichiro Miyamoto^2,3, Tatsuo Yoshinobu^1,2,3 (1.Biomedical Eng., 2.Electronic Eng., 3.Tohoku Univ.)

Keywords:LAPS, chemical sensor

Simultaneous measurement of a plurality of analytical samples in a single step is advantageous for reduction of time and cost of laboratory assays. The light-addressable potentiometric sensor (LAPS) [1] offers a platform to integrate a large number of measurement spots on a single sensor plate, which can be accessed by addressing light beams. In this study, we developed a partially-etched structure [2] of LAPS, in which each of the etched region serves as a defined well to accommodate a liquid sample and produces larger photocurrent signals in a wider frequency bandwidth. The advantage of the proposed sensor plate in term of its performance and its applicability to biological samples will be discussed in the presentation.