Figure 4: The volume resistivity of the FD-ECCs and the relevant percolating simulations.
From: Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits
(a) A figure of the volume resistivity of the ECCs versus different silver filler contents (by mass) of various samples (FD I, FD III, FD VI and silver flake (control)); the dash lines represent the best-fit line for volume resistivity of various materials above percolation threshold using percolation theory. All ECC samples were cured at the temperature of 150 °C for 20 min. (b) the dispersion scenario of silver fillers within a transparent polymer matrix; (c) the simulated percentages of percolation status versus the applied Ag mass fraction for the five types of silver filler models: (i) spherical particle, (ii) flakes with random orientations, (iii) flake with shear alignment, and the pink zone represents for the percolation zone considering the alignment effect of the flake model; (iv) FD I, (v) FD III and (vi) FD VI; (d) a snapshot of the computed case consists of modelled FD III in Monte Carlo simulation, the left is a disposition of the FD III in simulation, and the right displays the magnified zone near a chosen spot with connected and isolated FD III particles. The percolating group is in green, the isolated groups are in red, which are not contributing to the percolation.
