Schematic images of the process of FIB pre-milling with the following thermal evaporation. (a) Cross section of the nanostructures before and after thermal evaporation. We can clearly find that the spacing becomes smaller after depositing gold film; (b) top view of the nanostructures. It describes the change of the nanostructures’ morphology.
Gao et al. Nanoscale Research Letters 2012 7:399 doi:10.1186/1556-276X-7-399