Jaehyun Kim1,Yebin Park1,Wonjeong Suh1,Dongbeom Kim1,Unyong Jeong1
Pohang University of Science and Technology1
Jaehyun Kim1,Yebin Park1,Wonjeong Suh1,Dongbeom Kim1,Unyong Jeong1
Pohang University of Science and Technology1
Due to the air pollution and the pandemic outbreak, the need of quantitative pulmonary monitoring has been greatly increasing. Although a large number of deformable sensors have been developed for wearable healthcare, deformable sensors for monitoring the respiratory patterns have rarely been investigated. Herein, we introduce an air-permeable stretchable pixelated thin film pressure sensor that can be integrated on a commercial face mask. The sensor can provide 2D profiles of the air flow and pressure distribution during inhaling and exhaling. This study presents that a CNT-polymer coating layer deposited on the electrospun microfiber is viscoplastic. The localized viscoplastic piezoresistive patterns enable the strain-independent pressure sensing performance so that respiratory pressure distribution on the pixelated sensor can be quantitatively obtained without being affected by deformation of the sensor. The wearable sensor is expected to monitor temporary breathing disorders and help prediction of pulmonary diseases.