Figure 2.

Cross-sectional FE-SEM images. (a) Pure TiO2 nanowires and (b) the sample with Cu2O deposited on TiO2 nanowires at 300°C with 200 W DC power, 6 mTorr chamber pressure, and 3 sccm O2 flow rate.

Tsai et al. Nanoscale Research Letters 2011 6:575   doi:10.1186/1556-276X-6-575
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