Figure 6.

(a) Piezoresistive measurement of the fabricated strain sensor on the aluminum specimen, which is under uniaxial tensile loading. (b) Schematic of unstrained and strained polymer nanocomposites, which illustrates the breaking of the conducting path under strain. Relative change in resistance against applied strain for (c) PVDF/HEG and (d) PVDF/PSS-HEG. Gauge factor and DC electrical conductivity of (e) PVDF/HEG- and (f) PVDF/PSS-HEG-based strain sensors for different concentrations of HEG and PSS-HEG nanofillers, respectively.