Figure 6From: Catalytic activity of noble metals for metal-assisted chemical etching of siliconCurrent density versus potential curves of metal electrodes in oxygen-saturated HF solution. Lines indicate the following metal electrodes: dotted, Ag; dashed, Au; dot-dashed, Pt; and thick-solid, Rh. Fine-solid line indicates Rh electrode in oxygen-free HF solution (pure argon bubbling).Back to article page