Figure 4.

SEM images of AuNPs formed using the ZnO sacrificial template annealed at various temperatures. (a) Non-annealed, (b) 200°C, (c) 300°C, and (d) 400°C.

Goh et al. Nanoscale Research Letters 2012 7:563   doi:10.1186/1556-276X-7-563
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