Extended Data Fig. 2: Microstructural characterization of natural and delignified wood.
From: Low-value wood for sustainable high-performance structural materials
a, Cross-sectional SEM image of the natural wood showing the compact cell wall. b,c, and d, Cross-sectional SEM images of the delignified wood revealing densely packed cellulose nanofibers exposed in the cell wall, with numerous nanoscale pores.
