Figure 1.

Schematic diagram of Ni or Cu nanowire arrays in porous anodic alumina membrane. In the measurement of optical reflection spectrum, the incident light is set at a 45° angle to the sample surface, and the emergent light beam is also at a 45° angle to the sample surface.

Zhang et al. Nanoscale Research Letters 2012 7:569   doi:10.1186/1556-276X-7-569
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