Schematic illustrations. Formation of interfacial polygonal patterning via (a to b and b to f) surfactant-mediated self-assembly of gold nanoparticles and (a to b and b to d) formation of gold sponges. The insets stand for the figure legend.
Zhang et al. Nanoscale Research Letters 2013 8:436 doi:10.1186/1556-276X-8-436