SEM images of ZnO (a) nanowires and (b) nanotrees. TEM images of ZnO (c) nanowires and (d) branches of nanotrees.
Frequency dependence of (a) real and (b) imaginary parts of relative complex permittivity for paraffin wax, ZnO nanowire composite, and nanotree composite.
(a) The dielectric loss and (b) simulation of RL for paraffin wax, ZnO nanowires, and nanotrees.
(a) Real and (b) imaginary parts of the relative complex permittivity of ZnO nanotree composite with different loadings.
Comparison between the calculated and measured effective permittivity of the ZnO nanotree composite at 100 MHz vs the volume fraction of ZnO nanotrees. The calculation was based on the Bruggeman equation. Prior to calculation, the permittivity of ZnO nanotree composite was extracted from the measured effective permittivity of a composite with nanotrees.
Simulation of RL of ZnO nanotree composites with different thicknesses for (a) and (b) ZnO nanotrees, respectively. (c) RL of ZnO nanotree composite with a thickness of 3.0 mm of different loadings vs frequency.
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