Large area matrix of MXene/MoSe2 nanohybrid-based flexible piezoresistive pressure sensors for artificial e-skin application

In this study, a MoSe2/Ti3C2Tx nanohybrid-based fabricated flexible physical sensor demonstrates an elevated pressure sensitivity of 14.70 kPa(-1) and a highly robust nature withstanding up to similar to 2500 cycles. The fabricated pressure sensor's underlying transduction mechanism is elucidated by exploiting the inherent piezoresistive effect and the variation of the Schottky barrier height unveiled by the MoSe2/Ti3C2Tx interface with the assistance of comprehensive band structures that are appreciated by ultraviolet photoelectron spectroscopy. Also, sensors were employed as a 7 x 7 sensor matrix with a large area for tactile sensing and incorporated onto the volunteer hand to determine the artificial skin application.

Automated summary

In this study, a MoSe2/Ti3C2Tx nanohybrid-based fabricated flexible physical sensor with an elevated pressure sensitivity of 14.70 kPa(-1) and robust nature withstanding up to similar to 2500 cycles was developed. The underlying transduction mechanism of the pressure sensor involves the piezoresistive effect and the variation of the Schottky barrier height at the MoSe2/Ti3C2Tx interface, elucidated through comprehensive band structures obtained by ultraviolet photoelectron spectroscopy. Moreover, the sensors were used to create a 7 x 7 sensor matrix for tactile sensing and integrated onto a volunteer's hand for artificial skin application.