Page 55 - Carbon Nanotube Fibres and Yarns
P. 55
48 Carbon Nanotube Fibers and Yarns
Fig. 3.8 (A) Convection vortex-driven model for sock formation; (B) web-shell structure
of the sock. (Reproduced with permission from Hou G, Su R, Wang A, Ng V, Li W, Song Y,
et al. The effect of a convection vortex on sock formation in the floating catalyst method for
carbon nanotube synthesis. Carbon 102 (2016) 513–519.)
measurement by FIB cutting and calculation directly from SEM (scanning elec-
tron microscopy) images can improve the accuracy but it is a time-consuming
process. In light of this difficulty, Windle’s group suggested using specific stress
expressed in N/tex for axial stress, which is precisely equivalent to the engi-
3
neering stress/specific gravity in GPa/(g/cm ) [17]. The specific stress at break-
age is known as tenacity of the fiber in the textile industry, which requires only
measuring the linear density (tex) and breaking load (N) of the fiber.
