Figure 2.

SEM image revealing cross-sectional view of untreated multilayered structure (PSiMc) supported on bulk silicon substrate. Dark and light regions correspond to the high and low porosity layers, respectively. Magnified view of the nanostructured multilayer is also shown.

Hajdu et al. Nanoscale Research Letters 2012 7:400   doi:10.1186/1556-276X-7-400
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