Nanopaper-based sensors with ultrahigh and stable conductance for wearable sensors and heaters

Inspired by the ancient needling process in textiles, a kind of nanopaper of ultrahigh stable conductance enabled by a reinforcement structure containing cellulose aerogel and liquid metal is reported. Such a reinforcement structure can improve the interlaminar strength of the nanopaper by 94.8%, and the interlaminar strength of the modular connection by 39.2%. The nanopaper exhibits unique pressure-insensitive behavior (ΔR/R0 < 0.02) up to 0.9 MPa. The nanopapers show excellent performances as the heater, conductor and self-powered sensor. [Display omitted] •The nanopaper shows pressure-insensitive behavior (ΔR/R0 6000 pressing/releasing cycles) and good initial conductivity (9.6 × 103 S cm−1). The MCPE exhibits unique pressure-insensitive behavior (ΔR/R0