Absorption coefficient spectra of the NR and its CNT composites at different tube loadings.
Real part of the refractive index spectra, , of the NR and its CNT composites.
Real part and imaginary part of the bare CNT dielectric function extracted from the analysis of composites at various volume fractions . For , the dielectric function is fitted with (solid lines).
Absorbance spectra of the natural rubber [NR in equilibrium (solid line) and under strain (dashed line)] and the CNT composite as undeformed sample (triangle) and with uniaxial strain applied perpendicular (solid lines with marks) and parallel (dashed lines with marks) to the terahertz wave polarization.
Absorbance at extracted from Fig. 4 as a function of the induced orientation order , parallel (dots) and perpendicular (circles) to the terahertz wave polarization. The data were fitted with linear functions (solid lines).
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