Figure 9

XTEM microstructure of the silicon hillocks created at various sliding speeds in vacuum [26]: (a) XTEM microstructures of the hillock created at v = 10 μm/s, and (b) v=1000 μm/s. The inset SAD pattern in (b) was taken from the area under the hillock, (c) and (d) high resolution TEM microstructures of amorphous layer and deformation zone in (b)