Fig. 5: Reorientation of SWCNTs in y-rope (TPU) by twisting.
From: Giant nanomechanical energy storage capacity in twisted single-walled carbon nanotube ropes
a, The normalized G-band intensity of pristine SWCNT and y-rope (TPU) samples as a function of θ, the angle between the light-polarization direction and the long axis of the SWCNTs. The G-band intensities are normalized with respect to the intensity at θ = 0°. Here, y-rope (TPU) was analysed before twisting to understand the evolution of the orientations during the rope fabrication process. Inset: schematic illustration of the angle between the polarization direction and the SWCNT rope axis. The data are presented as the mean ± s.d. for n = 3 samples for each type. b,c, SEM micrographs of y-ropes (TPU) before (b) and after 50 twist/untwist cycles (c).
