dc conductivity vs silver nanoparticles volume fraction. The dots are the experimental data, the line is a percolation law with , and .
SEM micrographs of epoxy/silver nanocomposites showing the samples surface (top) and their cross section (bottom). Magnification of . The white bar is .
Temperature dependence of the resistance for and . The dots are the experimental data. The solid lines are the exponential fits.
(a) ac conductivity and (b) dielectric constant vs frequency for various silver nanoparticles volume fraction (in percent).
Master curves for (a) the conductivity and (b) the dielectric constant obtained after scaling the characteristics plotted in Fig. 4.
Scaling frequencies ( and ) as a function of dc conductivity.
Theoretical and measured parameters (percolation threshold and critical exponents).
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