Image: Ni@CNT2

Description: Annular dark field (ADF) scanning transmission electron microscopy (STEM) image of nickel-filled SWCNT after annealing in vacuum at 700 °C. Scale bar 5 nm.
Title: Ni@CNT2
Credit: http://www.nature.com/articles/srep15033
Author: Hidetsugu Shiozawa et al.
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