Stassi Stefano, Lamberti Andrea, Roppolo Ignazio, Casu Alberto, Bianco Stefano, Scaiola Davide, Falqui Andrea, Pirri Candido Fabrizio, Ricciardi Carlo
Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy. Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia, Corso Trento 21, Torino, 10129 Italy.
Nanotechnology. 2018 Feb 23;29(8):085702. doi: 10.1088/1361-6528/aaa46c.
Herein a complete characterization of single TiO nanotube resonator was reported for the first time. The modal vibration response analysis allows a non-invasive indirect evaluation of the mechanical properties of the TiO nanotube. The effect of post-grown thermal treatments on nanotube mechanical properties was investigated and carefully correlated to the chemico-physical parameters evolution. The Young's modulus of TiO nanotube rises linearly from 57 GPa up to 105 GPa for annealing at 600 °C depending on the compositional and crystallographic evolution of the nanostructure. Considering the growing interest in single nanostructure devices, the reported findings allow a deeper understanding of the properties of individual titanium dioxide nanotubes extrapolated from their standard arrayed architecture.
本文首次报道了单个TiO纳米管谐振器的完整特性。模态振动响应分析允许对TiO纳米管的机械性能进行非侵入性间接评估。研究了生长后热处理对纳米管机械性能的影响，并将其与化学物理参数的演变仔细关联。TiO纳米管的杨氏模量在600°C退火时从57 GPa线性上升至105 GPa，这取决于纳米结构的成分和晶体结构演变。考虑到对单个纳米结构器件的兴趣日益增加，所报道的研究结果有助于更深入地了解从其标准阵列结构推断出的单个二氧化钛纳米管的特性。
