Fig. 3: Formation of bandsaw-like carbon structures in wood.
From: Wood-based superblack
a Photographs showing wood (W) and carbonized wood (cW) at 1500 °C. b Proposed mechanism for the formation of bandsaw-like microarrays in cW. c–g SEM images of the morphology of cW obtained at 1500 °C. c SEM image showing bandsaw-like microarrays were formed in wood cell walls, while ray cells were converted into flat structures. d Side-view SEM image showing vertically aligned bandsaw-like microarrays in wood. e, f Top-view SEM image showing the morphology and dimension of bandsaw-like microarrays. g Top-view SEM image showing carbonized vessels and ray cells. h Measured total reflectance (TR) of cW obtained at 800–1500 °C. i Simulated light reflectance of cW with flat cell walls and bandsaw-like microarrays. j Raman spectra of cW obtained at 800–1500 °C.
