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Physical Review E
A mixture of dodecanethiol-capped Au nanoparticles (AuNPs) and the amphiphilic fatty-acid Stearic Acid (StA), spread as a monomolecular layer on water surface, is observed with Brewster Angle microscopy (BAM) to form a two-dimensional network of AuNP clusters through de-mixing, at concentration of AuNPs by weight, (ρ) > 10% and the surface pressure, (π) ≥ 10 mN m −1 . For π = 15 mN m −1 , the number of nodes (n) remains unchanged till ∼ 2 hours and then changes over to a lower n state, wheredoi:10.1103/physreve.92.032907 pmid:26465540 fatcat:5zhkxlbyezghhh5bindeauzsie