Figure 3

The modified shapes.
The SEM images of PdCu NWs arrays with (a) screw-threaded shapes. The TEM images of PdCu NWs with (b) random-chapped, (c) random-gapped, (d) screw-threaded and (e) spiral-shaped shapes. The scale bars are all 100 nm.
The modified shapes.
The SEM images of PdCu NWs arrays with (a) screw-threaded shapes. The TEM images of PdCu NWs with (b) random-chapped, (c) random-gapped, (d) screw-threaded and (e) spiral-shaped shapes. The scale bars are all 100 nm.