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Fabrication of CuO-Pt core-shell nanohooks by in situ reconstructing the Pt-shells
Fan Cao1,2, He Zheng2, Ligong Zhao2
1Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials-Hubei Key Lab of Ferro and Piezoelectric Materials and Devices, Faculty of Physics & Electronic Sciences, Hubei University, Wuhan 430062 People's Republic of China.
Abstract:
The design of various nanostructures with specific compositions and shapes is highly demanded due to the widespread use of micro/nano electro-mechanical systems. In this work, one-dimensional CuO-Pt core-shell nanowires (NWs) are acquired by depositing Pt nanoparticles onto CuO NWs and then mechanically-shaped into nanohooks. Subsequently, the hook-like shape is maintained by the Pt-shell which is reconstructed via Joule heat and re-solidified after cooling down, during which the elastic strain energy is stored in the CuO-core. The results provide a simple strategy to design nanostructures with various compositions and shapes, implying the potential applications in mechanical energy storage and shape memory nanodevices.
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