Atomic-scale investigation on the ultra-large bending behaviours of layered sodium titanate nanowires

Liu, Qiong and Zhan, Haifei and Zhu, Huaiyong and Sun, Ziqi and Bell, John and Bo, Arixin and Gu, Yuantong (2019) Atomic-scale investigation on the ultra-large bending behaviours of layered sodium titanate nanowires. Nanoscale, 11 (24). pp. 11847-11855. ISSN 2040-3364


Abstract

A study on the mechanical properties of one-dimensional layered titanate nanomaterials is crucial since they demonstrate important applications in various fields. Here, we conducted ex situ and in situ atomic-scale investigation on the bending properties of a kind of ceramic-layered titanate (Na2Ti2O4(OH)2) nanowire using transmission electron microscopy. The nanowires showed flexibility along the 〈100〉 direction and could obtain a maximum bending strain of nearly 37%. By analysing the defect behaviours, the unique bending properties of this ceramic material were found to correlate with a novel arrangement of dislocations, an active dislocation nucleation and movement along the axial direction resulting from the weak electrostatic interaction between the TiO6 layers and the low b/a ratio. These results provide a pioneering and key understanding on the bending behaviours of layered titanate nanowire families and potentially other one-dimensional nanomaterials with layered crystalline structures.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 24 Sep 2020 00:10
Last Modified: 24 Sep 2020 05:58
Uncontrolled Keywords: Mechanical-properties; youngs modulus; strength; deformation; transition; dynamics; phase
Fields of Research (2008): 09 Engineering > 0904 Chemical Engineering > 090499 Chemical Engineering not elsewhere classified
Identification Number or DOI: https://doi.org/10.1039/c9nr02082a
URI: http://eprints.usq.edu.au/id/eprint/39378

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