Fig. 3
From: Ultra strong pyroprotein fibres with long-range ordering

Heat-treatment temperature dependent microstructural characteristics of pyroprotein-based fibres by heating to 2800 °C. a,b Raman spectra, and c,d TEM and selected area diffraction patterns of the pyroprotein-derived fibres with and without axial stretching, respectively, as a function of the HTT. The scale bars in the top-left image in c and d represent 10 nm