Figure 5
From: Copper Induced Conformational Changes of Tripeptide Monolayer Based Impedimetric Biosensor

AFM topography (top) and cross-section (bottom) of bare Si-Au surface (A); after the adsorption of Lpa-GGH peptide (B); and following exposure to Cu2+ ions (C). Each sample is 3 μm × 3 μm area.