This document discusses various characterization techniques for bionanomaterials. Structural characterization techniques like X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) are used to determine structure and morphology. Chemical characterization techniques like optical spectroscopy, electron spectroscopy, and mass spectrometry are used to determine surface and interior atoms, compounds, and spatial distributions. Additional techniques discussed include small angle X-ray scattering (SAXS) and gas adsorption. Characterization at the nanoscale requires high resolution and sensitivity to provide atomic-level detail.