Figure 3.

Scanning electron microscope images of two FNPs prototyped by a template-assisted synthesis. (a) The surface of one FNP; (b) the surface of another FNP and the cross-section of its nanofiber layer (inset).

Han et al. Nanoscale Research Letters 2012 7:603   doi:10.1186/1556-276X-7-603
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