Figure 3.

SEM images of SiGe NRs fabricated by Au-assisted wet chemical etching at various solution temperatures. Solution temperatures of (a) 5°C, (b) 15°C, (c) 20°C, and (d) 25°C for 20 min.

Lai et al. Nanoscale Research Letters 2012 7:140   doi:10.1186/1556-276X-7-140
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