SEM images describing the formation of the porous Ag film template. (a) SEM image of the sample after RIE treatment of 55 s. (b) SEM image of the sample after 5-min Ag deposition. (c) The sample after removal of the PS spheres by ultrasonication.
Su et al. Nanoscale Research Letters 2013 8:405 doi:10.1186/1556-276X-8-405