Comment on "Experimental measurements of the roughness of brittle cracks"

摘要: universality, and therefore casts doubt on this hypothesis. In addition, it is not uncommon to find that materials exhibit different values of g scales [3,6]. Data scanning tunneling microscopy (STM) reported for MgO, Si, Cu [5] suggest ( 0.6~0. 1 a nanometer scale, which beyond the error margin mesoscopic studies. We have analyzed STM images brittle fracture surfaces tungsten single crystals highly oriented pyrolitic graphite taken with sampling steps from 0. 20 nm found /=0. 40 ~0.15 Fourier analysis pair correlation function. The same value was derived direct evaluation w as function L. test self-affinity, better characterization, could be obtained by generalizing recently proposed matrix [7],