Figure 2From: Metal electrode integration on macroporous silicon: pore distribution and morphologySEM cross-sectional tilted view of a macroporous layer grown on Ti/Au patterned silicon substrates. Geometry WP1 (a and b) and geometry WP2 (c). A 20-day-old HF/DMF mixture was used as electrolyte. The current density was set at the constant value of 91 mA/cm2 for 25 min.Back to article page