Fabrication of Peptide Self-assembled Monolayer on Mica Surface and its Application in Atomic Force Microscopy Nanolithography
Self-assembled monolayer (SAM) as a unique type of nanomaterials has played important roles in modern nanotechnology. In
this study, we described a novel method to fabricate SAM with a surfactant-like peptide A6K, which has been known to self-assemble
into micellar nanofibers in aqueous solution. Firstly a simple filtration method was used to remove self-assembling nanofibers and retain
peptide monomers in solution. Pyrene-fluorescence, dynamic light scattering (DLS) and atomic force microscopy (AFM) were used to
confirm that nanofibers were effectively removed and filtered solution contained only peptide monomers. Then by incubating the filtered
peptide solution on mica surface, the peptide monomers could self-assemble into a flat and continuous peptide SAM, which was further
proved to be a suitable substrate for creating nanopatterns by AFM nanolithography.
Keywords: Micelles, monomers, nanolithography, nanopatterns, self-assembled monolayer, self-assembling peptide.
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