TY - JOUR
T1 - Piezoresistance of flexible tunneling-percolation networks
AU - Taylor-Harrod, Isaac
AU - Nogaret, Alain
PY - 2017/7/20
Y1 - 2017/7/20
N2 - We model changes in the conductivity of flexible composite films stressed by bending. By treating stress as a perturbation of the effective medium conductivity, we obtain an expression of the piezoresistance as a function of four material parameters. The model correctly predicts resistance spikes and their recovery under the action of viscoelastic forces, in good agreement with experimental observations over stress cycles. The theory may be used to design composite materials for high-sensitivity touch sensors.
AB - We model changes in the conductivity of flexible composite films stressed by bending. By treating stress as a perturbation of the effective medium conductivity, we obtain an expression of the piezoresistance as a function of four material parameters. The model correctly predicts resistance spikes and their recovery under the action of viscoelastic forces, in good agreement with experimental observations over stress cycles. The theory may be used to design composite materials for high-sensitivity touch sensors.
UR - https://doi.org/10.1103/PhysRevB.96.024205
U2 - 10.1103/PhysRevB.96.024205
DO - 10.1103/PhysRevB.96.024205
M3 - Article
VL - 96
JO - Physical Review B : Condensed Matter and Materials Physics
JF - Physical Review B : Condensed Matter and Materials Physics
SN - 1098-0121
IS - 2
M1 - 024205
ER -