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. 2017 Oct 21:1–74. doi: 10.1016/B978-0-323-44923-6.00001-7

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Figure 1.1.7 — (A) Scanning electron microscopic image of Si-based nanostructured Cu for magnetron sputtering deposition (physical) [64], (B) aligned ZnO nanotubes by chemical synthesis [65], and (C) microscopic image of silver nanoparticles (NPs) using biological synthesis [66].