Figure 7
Representative atomic force microscopy results. (a) Schematic of the vertical deflection extend, F, in terms of the tip-sample separation, δ; (b) Plot of the Gaussian distribution versus the elastic modulus, E, for fibrils with the ratio of tropocollagen I/tropocollagen III = 9:1 in Phosphate Buffered Saline (PBS) solution (The red diagram denotes the histogram of the data, and the blue curve represents the fitted Gaussian curve). A representative force map including some indentation points on a collagen fibril is displayed.
