Fig. 2From: Investigating the Co-Adsorption Behavior of Nucleic-Acid Base (Thymine and Cytosine) and Melamine at Liquid/Solid Interface a STM image with a large area of the melamine self-assembled structure on HOPG substrate. b and c High-resolution STM (HR-STM) images for an ordered domain, showing hexagonal porous structure formed by melamine molecules. Tunneling conditions: V bias = 0.450 V, I t = 0.127 nA. d Molecular model proposed for the assembled structure formed by melamine moleculesBack to article page