Possessing a strong piezoresistivity, nanocomposites of metal nanowires and elastomer
have been studied extensively for its use in highly flexible, stretchable, and sensitive
sensors. In this work, we analyze the working mechanism and performance of a
nanocomposite based stretchable strain sensor by calculating the conductivity of the
nanowire percolation network as a function of strain. We reveal that the nonlinear
piezoresistivity is attributed to the topological change of percolation network, which leads to …