“…However, there has been no systematic study of the effect of the applied voltage on the field-assisted dissolution. Obviously, the physical meaning of the field-assisted dissolution is rather complicated and inexplicit until now [16,17,22,25,26] because of the lack of a quantitative correlation between the fieldassisted dissolution speed and the variable anodizing current. As Hebert et al [4,27] indicated that no model has successfully explained the relationship between porous morphology and processing parameters.…”