Fig. 1.

AFM topography images (left) and section analysis surface profiles (right) of bovine cardiac muscle fiber buddle in rigor (a) and in relaxing state (b). Both topography (height) images in 512×512 pixels were recorded in tapping mode AFM in the air at room temperature at 0.5Hz. Both images were used for analysis after a second order Flatten, local filtering, and noisy line erasing. Inset: Inverted optical microscopy of cardiac muscle fiber buddle in rigor (a) and in relaxing state (b).