In situ atomic-scale study on the ultralarge bending behaviors of TiO2-B/Anatase dual-Phase nanowires

Liu, Qiong and Zhan, Haifei and Zhu, Huaiyong and Liu, Hongwei and Sun, Ziqi and Bell, John and Bo, Arixin and Gu, Yuantong (2019) In situ atomic-scale study on the ultralarge bending behaviors of TiO2-B/Anatase dual-Phase nanowires. Nano Letters, 19 (11). pp. 7742-7749. ISSN 1530-6984


Abstract

It is challenging but important to understand the mechanical properties of one-dimensional (1D) nanomaterials for their design and integration into nanodevices. Generally, brittle ceramic nanowires (NWs) cannot withstand a large bending strain. Herein, in situ bending deformation of titanium dioxide (TiO2) NWs with a bronze/anatase dual-phase was carried out inside a transmission electron microscopy (TEM) system. An ultralarge bending strain up to 20.3% was observed on individual NWs. Through an in situ atomic-scale study, the large bending behavior for a dual-phase TiO2 NW was found to be related to a continuous crystalline-structure evolution including phase transition, small deformation twinning, and dislocation nucleation and movements. Additionally, no amorphization or crack occurred in the dual-phase TiO2 NW even under an ultralarge bending strain. These results revealed that an individual ceramic NW can undergo a large bending strain with rich defect activities.


Statistics for USQ ePrint 39377
Statistics for this ePrint Item
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: Current - Research and Innovation Division (12 Jul 2012 -)
Faculty/School / Institute/Centre: Current - Research and Innovation Division (12 Jul 2012 -)
Date Deposited: 17 Sep 2020 00:46
Last Modified: 24 Sep 2020 05:59
Uncontrolled Keywords: Dual-phase TiO2 nanowire ultralarge bending strain atomic-scale defect motion phase transition
Fields of Research (2008): 03 Chemical Sciences > 0399 Other Chemical Sciences > 039999 Chemical Sciences not elsewhere classified
Identification Number or DOI: https://doi.org/10.1021/acs.nanolett.9b02685
URI: http://eprints.usq.edu.au/id/eprint/39377

Actions (login required)

View Item Archive Repository Staff Only