TEM image of Mo NW and bundles. (a) TEM of small MoSI NW bundle. (b) High resolution TEM image of Mo NW with a diameter of approximately 5 nm. The arrows point at the grain boundaries where NW can be flexible to elastic structural deformation (c) and (d) show TEM images for large diameter Mo NWs (>15 nm) with significant surface roughness. The pore formation is clearly visible as hollow voids of various sizes that are incorporated in the bulk and the surface structures.
Kovic et al. Nanoscale Research Letters 2012 7:567 doi:10.1186/1556-276X-7-567