Schematic setup of optical measurement.
XRD pattern of the Cu nanowires/AAO composite film.
Top view of the Cu nanowires after the template partly dissolved by NaOH (a); TEM image of the Cu nanowires (b). Nanowire array growing at , , .
Calculated surface-plasmon resonance of the Cu nanorods as without (a) and with (b) considering the interband electron excitation. (c) The enlarged transverse resonant part of Fig. 3(b) as well as the fitting curve, fitting function according to exponential decay method.
Optical absorption spectra of the Cu nanorod arrays growing at , . (a) , (b) , (c) , and (d) . The diameters are all . The calculated mean aspect ratio according to the fitting function in Fig. 3(c) was marked.
Optical absorption spectra of the Cu nanorod arrays, the templates fabricated at different voltages. All nanowire arrays growing at , , .
Absorption spectra of composite films at different polarized directions and the angle was fixed at 70°. The nanowire array growing at , , .
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