Indium Oxide Nanospirals Made of Kinked Nanowires

Helical inorganic nanostructures have received great attention due to their unique structures that could be interesting for both fundamental research and nanodevice applications. Using a tube-in-tube laser ablation chemical vapor deposition (CVD) method with gold nanoparticles as the catalysts, we reported the synthesis of self-assembled kinked In₂O₃ nanospirals and multikinked nanowires. As-synthesized nanostructures showed ultrafast photoinduced reversible wettability switching behavior from hydrophobic (132.7°) to superhydrophilic (0°) within 14 min. Single kinked In₂O₃ nanostructure-based field-effect transistors were fabricated, and mobilities higher than 200 cm²/(V·s) were obtained, revealing good opportunity in fabricating high-performance electronic and optoelectronic devices.