講演情報
[24a-1BC-4]Flexible pressure sensor with capability to detect positive and negative pressure
〇(D)YAN XUAN1, Kuniharu Takei1 (1.Hokkaido Unvi.)
キーワード：
pressure sensor、laser-induced graphene
In the rapidly evolving field of sensor technology, flexible sensors are notable for their adaptability and multifunctionality, significantly transforming applications in smart wearables and the Internet of Things (IoT). Air pressure sensors, particularly, are crucial for environmental monitoring and location measurement. This study focuses on developing a compact and lightweight flexible air pressure sensor, employing innovative Laser-Induced Graphene (LIG) as the sensing material and flexible Polydimethylsiloxane (PDMS) as the substrate.
By examining the morphological characteristics of LIG, as illustrated in Fig.1, it is evident that LIG possesses a wavy structure. This unique structure facilitates greater deformability in LIG, allowing it to respond differently to tensile and compressive bending states. In a state of tension, the resistance of LIG increases, whereas in compression, it decreases. Utilizing the responsive characteristics of LIG, we integrate it with PDMS to devise an air pressure sensor, as depicted in Fig.2. This design transforms the difference between external and reference air pressures into varying bending states of LIG, thereby creating a sensor capable of precisely detecting changes in air pressure. Fig.3 demonstrates the sensor's resistance changes under air pressure differences ranging from -30 to 20 KPa.
These advanced LIG-based sensors are sensitive and flexible, making them highly suitable for patient healthcare monitoring and environmental sensing applications. Compared to traditional sensor technologies, their portability and simplified manufacturing process also offer significant advantages, promising a wide range of potential applications.
By examining the morphological characteristics of LIG, as illustrated in Fig.1, it is evident that LIG possesses a wavy structure. This unique structure facilitates greater deformability in LIG, allowing it to respond differently to tensile and compressive bending states. In a state of tension, the resistance of LIG increases, whereas in compression, it decreases. Utilizing the responsive characteristics of LIG, we integrate it with PDMS to devise an air pressure sensor, as depicted in Fig.2. This design transforms the difference between external and reference air pressures into varying bending states of LIG, thereby creating a sensor capable of precisely detecting changes in air pressure. Fig.3 demonstrates the sensor's resistance changes under air pressure differences ranging from -30 to 20 KPa.
These advanced LIG-based sensors are sensitive and flexible, making them highly suitable for patient healthcare monitoring and environmental sensing applications. Compared to traditional sensor technologies, their portability and simplified manufacturing process also offer significant advantages, promising a wide range of potential applications.