Figure 2
From: A zoom into the nanoscale texture of secondary cell walls
SNOM/Height/Phase images of beech (a), spruce (b) and bamboo (c). The SNOM images of the cross sections of the three plant species (positions of the measurements are illustrated) consistently show a circumferential segmentation, in contrast to the homogeneous height and phase images, which points to compositional changes at the nano-level of the secondary cell wall.