The 83rd JSAP Autumn Meeting 2022

Presentation information

Symposium (Oral)

Symposium » Cutting-edge Research and Perspectives of Artificial Odor (Smell) Electronics and Informatics

[21a-A401-1~5] Cutting-edge Research and Perspectives of Artificial Odor (Smell) Electronics and Informatics

Wed. Sep 21, 2022 10:00 AM - 12:05 PM A401 (A401)

Yoichi Otsuka(Osaka Univ.), Tsunaki Takahashi(Univ. Tokyo)

10:05 AM - 10:35 AM

[21a-A401-2] Small, Low-energy Molecular Sensors: Their Integration and Potential Applications

Ken Uchida1, Takahisa Tanaka1 (1.Univ. Tokyo)

Keywords:molecular sensor, Joule self heating

In the Internet of Things (IoT) era, detecting and recognizing various information around us using sensors are increasingly important. However, it is difficult for small, low-enegy sensors to selectively detect kinds of low-weight molecules and their concentrations. By utilzing the Joule heating, we have succeeded in reducing the energy consumption of gas sensors and adding multifunctionality to them. Furthermore, the multiple types of sensors can be integrated on a single chip by utilizing the advantages of Joule heating in terms of localization of heat in space and time. To achieve higly integrated sensing systems, we have developed sensors with various nanomaterials such as metal nanosheets, oxide nanowires, and ion gels. In this presentation, we report 1) an acetone sensor using low-resistance WO3 nanowires, 2) a multi-electrode ion-gel-based multi-component gas sensing system, and 3) an ammonia sensor based on Co-porphyrin-modified graphene.