Publication

Development of wearable and flexible insole type capacitive pressure sensor for continuous gait signal analysis

Development of wearable and flexible insole type capacitive pressure sensor for continuous gait signal analysis

In this paper, a porous-polydimethylsiloxane (PDMS) structure was sandwiched between two nylon filter paper based multi wall carbon nanotubes (MWNT) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS) composite electrodes for the development of aflexible capacitive pressure sensor for the gait signal analysis. During the fabrication of the porous-PDMS dielectric structure, the composite electrodes were fabri-cated using a vacuum-filtration method and manually made sugar cube was used as a mold for the formation of aporous structure. The as-fabricated flexible capacitive pressure sensor exhibited 3 different sensitivities of1.12 MPa−1, 0.86 MPa−1, 0.36 MPa−1with a fast response time of 1 s. A high stability (> 10,000 compression-release cycles), a high R-square of 0.97, and a wide working pressure range (< 1200 kPa) were achieved. The fabricated device was also successfully demonstrated as an insole type pressure sensor for real-time gait-signal monitoring. The wearable and flexible capacitive pressure sensor proposed here is highly applicable for numerous healthcare devices and systems

Similar Publications: