SEM images of PDMS pillars. The pillars were fabricated by molding with undiluted PDMS into the FOTS-treated master mold without additional solvent treatment. The pillar diameters are (a) 760 nm, (b) 500 nm, (c) 300 nm. Smaller holes were not filled. Pillar deformation and significant charging during SEM imaging are evident in (c). Samples were tilted 45° for SEM imaging.
Con and Cui Nanoscale Research Letters 2013 8:394 doi:10.1186/1556-276X-8-394