Figure 4 .

TEM images showing Pt nanocrystals deposited on surface of Ag wires with different reaction times. Different reaction times at 170°C, (a) 1 h, (b) 2 h, and (c) 3 h, as well as the SAED patterns of Ag core and Pt shell.

Shen et al. Nanoscale Research Letters 2012 7:245   doi:10.1186/1556-276X-7-245
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