[15a-WL2_101-1~10] 6.3 Oxide electronics

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15a-WL2_101-1] Proof-of-Concept Demonstration of an Integrated Temperature Sensor Sheet Based on Phase-Transition Oxides

〇(M2C)Kosuke Kayano¹, Sang-Gyu Koh², Satoshi Hamasuna¹, Shiyuan Sun¹, Takaaki Miyasako², Tadasu Hosokura², Takeaki Yajima¹ (1.Kyushu University, 2.Murata Manufacturing Co., Ltd.)

Keywords:

oxide phase-transition materials,PTC thermistor (positive temperature coefficient thermistor),BaTiO3 (barium titanate)

Oxide phase-transition materials exhibit high temperature sensitivity in resistance, which we exploit to propose an integrated temperature-distribution sensor sheet achieving high noise robustness, high-speed operation, and low energy consumption simultaneously. By using the phase-transition-induced resistance change as a threshold response, we show that large-scale integration is feasible even under wiring parasitics and noise. We fabricated a 1024-sensor flexible sheet using BaTiO₃-based PTC thermistors and verified temperature-distribution sensing in combination with a readout circuit chip.