Fig. 4
From: Hierarchical self-entangled carbon nanotube tube networks
Overview of the CNTT/PDMS porous stretchable conductors and their mechanical and electrical characteristics. a Left: schematic representation showing the PDMS infiltration into the CNTT/t-ZnO composite and subsequent ZnO etching with HCl. Right: stretchable porous conductor used for conductivity measurements; b Conductivity against cycle number for the unstressed (0% elongation) and the stressed (13.3% elongation) state, showing an increase in conductivity for both states during cycling (CNT concentration was 11.3×10–3 g cm−3); c Mechanical and electrical properties under tensile stress of a porous stretchable conductor having a CNT concentration of 11.3×10–3 g cm−3. With increasing elongation, the conductivity decreases. d Comparative log–log plot of maximum conductivity as a function of CNT weight fraction (adopted from ref. 47); e–g SEM images of the CNTT/PDMS composites showing the interconnected channels with CNT decorated walls after template removal by HCl (Scale bars: single line: 10 µm, double line: 1 µm)
