Fig. 3.

EMI shielding performance of the aligned SWCNT films. EMI Shielding performance a in the X-band and b at 10 GHz of the 8 µm thick aligned SWCNT films in different directions with respect to the electric field direction of incident EM waves. c EMI SE of aligned SWCNT films, and vacuum-filtrated random network SWCNT buckypaper, rGO film, and different aspect ratios of MWCNT buckypapers. d EMI SE in the X-band at various thicknesses for the SWCNT films. e Experimental EMI SE at 10 GHz of the aligned SWCNT films with various thicknesses, as comparison to the theoretical EMI SE of a homogeneous shield. f The experimental measured EMI SE values of the 8 µm thick aligned SWCNT films in ultra-broadband frequency range. g EMI SE of the films after 10,000 cycle bending and rolling in the whole X-band frequency range. EMI SE of the as-prepared SWCNT films h before and after strong acid, alkali, or acetone immersion treatments and i before and after low-/high-temperature treatments. The EMI SE is nearly unchanged after long-term storage in harsh environments, revealing a high chemical and structural stability of SWCNT film