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Title: Reconfigurable Vanadium Dioxide Nanomembranes and Microtubes with Controllable Phase Transition Temperatures

Abstract

Here, two additional structural forms, free-standing nanomembranes and microtubes, are reported and added to the vanadium dioxide (VO2) material family. Free-standing VO2 nanomembranes were fabricated by precisely thinning as-grown VO2 thin films and etching away the sacrificial layer underneath. VO2 microtubes with a range of controllable diameters were rolled-up from the VO2 nanomembranes. When a VO2 nanomembrane is rolled-up into a microtubular structure, a significant compressive strain is generated and accommodated therein, which decreases the phase transition temperature of the VO2 material. The magnitude of the compressive strain is determined by the curvature of the VO2 microtube, which can be rationally and accurately designed by controlling the tube diameter during the rolling-up fabrication process. The VO2 microtube rolling-up process presents a novel way to controllably tune the phase transition temperature of VO2 materials over a wide range toward practical applications. Furthermore, the rolling-up process is reversible. A VO2 microtube can be transformed back into a nanomembrane by introducing an external strain. Because of its tunable phase transition temperature and reversible shape transformation, the VO2 nanomembrane-microtube structure is promising for device applications. As an example application, a tubular microactuator device with low driving energy but large displacement is demonstrated at variousmore » triggering temperatures.« less

Authors:
 [1];  [1];  [2];  [3];  [2]; ORCiD logo [1]
  1. Fudan Univ., Shanghai (People's Republic of China)
  2. Univ. of Illinois at Chicago, Chicago, IL (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1461508
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 18; Journal Issue: 5; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; actuator; microtubes; nanomembranes; phase transition; Strain engineering; vanadium dioxide

Citation Formats

Tian, Ziao, Xu, Borui, Hsu, Bo, Stan, Liliana, Yang, Zheng, and Mei, Yong Feng. Reconfigurable Vanadium Dioxide Nanomembranes and Microtubes with Controllable Phase Transition Temperatures. United States: N. p., 2018. Web. https://doi.org/10.1021/acs.nanolett.8b00483.
Tian, Ziao, Xu, Borui, Hsu, Bo, Stan, Liliana, Yang, Zheng, & Mei, Yong Feng. Reconfigurable Vanadium Dioxide Nanomembranes and Microtubes with Controllable Phase Transition Temperatures. United States. https://doi.org/10.1021/acs.nanolett.8b00483
Tian, Ziao, Xu, Borui, Hsu, Bo, Stan, Liliana, Yang, Zheng, and Mei, Yong Feng. Tue . "Reconfigurable Vanadium Dioxide Nanomembranes and Microtubes with Controllable Phase Transition Temperatures". United States. https://doi.org/10.1021/acs.nanolett.8b00483. https://www.osti.gov/servlets/purl/1461508.
@article{osti_1461508,
title = {Reconfigurable Vanadium Dioxide Nanomembranes and Microtubes with Controllable Phase Transition Temperatures},
author = {Tian, Ziao and Xu, Borui and Hsu, Bo and Stan, Liliana and Yang, Zheng and Mei, Yong Feng},
abstractNote = {Here, two additional structural forms, free-standing nanomembranes and microtubes, are reported and added to the vanadium dioxide (VO2) material family. Free-standing VO2 nanomembranes were fabricated by precisely thinning as-grown VO2 thin films and etching away the sacrificial layer underneath. VO2 microtubes with a range of controllable diameters were rolled-up from the VO2 nanomembranes. When a VO2 nanomembrane is rolled-up into a microtubular structure, a significant compressive strain is generated and accommodated therein, which decreases the phase transition temperature of the VO2 material. The magnitude of the compressive strain is determined by the curvature of the VO2 microtube, which can be rationally and accurately designed by controlling the tube diameter during the rolling-up fabrication process. The VO2 microtube rolling-up process presents a novel way to controllably tune the phase transition temperature of VO2 materials over a wide range toward practical applications. Furthermore, the rolling-up process is reversible. A VO2 microtube can be transformed back into a nanomembrane by introducing an external strain. Because of its tunable phase transition temperature and reversible shape transformation, the VO2 nanomembrane-microtube structure is promising for device applications. As an example application, a tubular microactuator device with low driving energy but large displacement is demonstrated at various triggering temperatures.},
doi = {10.1021/acs.nanolett.8b00483},
journal = {Nano Letters},
number = 5,
volume = 18,
place = {United States},
year = {2018},
month = {4}
}

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Cited by: 12 works
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Figures / Tables:

Figure 1 Figure 1: Fabrication and characteristics of an ultrathin VO2 nanomembrane. (a) Schematic of the microfabrication process using rolling-up nanotechnology. (b) Cross-sectional SEM image of the VO2 nanomembrane before the thinning process. (c) Cross-sectional TEM image of the thinned VO2 nanomembrane. (d) SEM image of the ultrathin VO2 nanomembrane. (e) SEMmore » image of the VO2 microtube. (f) Bending rigidity of various materials as a function of thickness. (g) Temperature-dependent resistance of VO2 nanomembranes with thicknesses of 200 and 28 nm. The resistance decreases with increasing temperature and vice versa due to the phase transition.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.