Herein a complete characterization of single TiO2 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 TiO2 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 TiO2 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.

Evolution of nanomechanical properties and crystallinity of individual titanium dioxide nanotube resonators / S. Stassi, A. Lamberti, I. Roppolo, A. Casu, S. Bianco, D. Scaiola, A. Falqui, C.F. Pirri, C. Ricciardi. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 29:8(2018), pp. 085702.1-085702.8.

Evolution of nanomechanical properties and crystallinity of individual titanium dioxide nanotube resonators

A. Casu;A. Falqui;
2018

Abstract

Herein a complete characterization of single TiO2 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 TiO2 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 TiO2 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.
nanomechanical resonator; TiO2 nanotubes; Young's modulus; crystallization; mechanical properties
Settore FIS/03 - Fisica della Materia
2018
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/776004
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