Figure 6.
Chirality of cellulose and cellulosic materials. (a) Chiral twisting of a single fibril of bacterial cellulose (image has been rotated for clarity, and scale bar = 1 μm).84 (b) Twisting of cotton fibers (image courtesy of R. M. Brown). (c) Image of a twist in the trunk of Eucalyptus gigantea (photograph taken in the grounds of Exeter University (S .J. Eichhorn)), (d) Twisted wood shavings (CC-BY image). (e) The twisted spire of Chesterfield church, UK (CC-BY image), and (f) the Urbach tower in Baden-Württemberg, Germany (CC-BY image).