A Novel and Inexpensive Approach for Force Sensing Based on FSR Piezocapacitance Aimed at Hysteresis Error Reduction

Figure 1

(a) Graph of the interparticle separation (s) versus stress (σ) for a hysteretic conductive polymer composite. Deformation (i) decreases linearly as stress increases and (ii) increases nonlinearly when the CPC is released (unloaded). (b) Scheme of polymer matrix (light gray) with conductive nanoparticles (black) sandwiched between electrodes (dark gray) not subjected to stress, where s₀ depicts the natural average interparticle separation. (c) Scheme of the same polymer matrix subjected to stress (σ_f) showing that the interparticle separation has shrunk to s_f as a consequence of stress.

(a)

(b)

(c)