A highly sensitive wearable flexible strain sensor based on polycrystalline MoS thin film.

The present study investigates the piezoresistive properties of polycrystalline MoS film for strain-sensing applications. The gauge factor (GF) of the flexible MoS device (MoS/PET) has been calculated to be 102 ± 5 in the stress range from ~7 MPa to ~14 MPa. In addition, to improve the sensing stress range, the flexible strain sensors are encapsulated by SU-8.