TEM image of Cu@PPy nanocables prepared by hydrothermal synthesis. (a-c) show different regions of the sample Cu@PPy nanocables that were prepared by hydrothermal synthesis of Py:CuOHCl, with molar ratio of 2:0.78 and period of 72 h at 150°C. Inset in (c) shows the SAED of the region marked.
Suárez-Guevara et al. Nanoscale Research Letters 2012 7:521 doi:10.1186/1556-276X-7-521