Figure 4 .

SEM image and image in back-scattered electrons of the surface of the porous PbSe layer. SEM image of the surface of the porous PbSe layer ( a) and the image in back-scattered electrons with 10-kV high voltage ( b) for the same area.

Zimin et al. Nanoscale Research Letters 2012 7:338   doi:10.1186/1556-276X-7-338
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