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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Investigating the Co-Adsorption Behavior of Nucleic-Acid Base (Thymine and Cytosine) and Melamine at Liquid/Solid Interface

Fig. 4

a A large-scale STM image showing multiple adjacent domains formed by cytosine-melamine binary assembly system on graphite surface. b HR-STM images including the typical adjacent domains marked with I, II where there existing different self-assembled units. c HR-STM image for the assembled structure in the domain marked with II in b image. Tunneling conditions: V bias = 0.450 V, I t  = 0.189 nA. d Tentative molecular models proposed for the cytosine-melamine cluster configurations corresponding to c

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