- Haining Ji
Haining Ji
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Search for this author on this site - Dongqing Liu
Dongqing Liu
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Search for this author on this site - Haifeng Cheng
Haifeng Cheng
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Search for this author on this site - Chaoyang Zhang
Chaoyang Zhang
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Search for this author on this site - Lixiang Yang
Lixiang Yang
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Search for this author on this site - Wenwei Zheng
Wenwei Zheng
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology
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Vanadium dioxide (VO2) undergoes a Mott metal-insulator transition (MIT) close to room temperature, and has been suggested as a candidate for use in smart window and adaptive infrared camouflage. Here we report the synthesis of uniform free-standing VO2 nanowires using a novel hydrothermal method. The synthetic nanowires have typical diameters of 150±30 nm and lengths of tens of micrometer. These VO2 nanowires exhibit high crystallinity and feature a pure monoclinic phase and composition characterized by X-ray diffraction, X-ray photoelectron spectroscopy, high resolution transmission electron microscopy and selected area electron diffraction. Moreover, reversible phase transition properties of VO2 nanowires are monitored via differential scanning calorimetry, variable temperature X-ray diffraction and temperature-dependent Raman spectroscopy. The results show VO2 nanowires obtained exhibit a reversible phase transition with an endothermic phase transition at 65.2 °C and a narrow hysteresis width of 6.5 °C. These VO2 nanowires should provide promising materials for fundamental investigations of nanoscale metal-insulator transitions.
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[Haining Ji, Dongqing Liu, Haifeng Cheng, Chaoyang Zhang, Lixiang Yang, Wenwei Zheng. Hydrothermal Synthesis and Phase Transition Properties of Uniform Free-standing Vanadium Dioxide Nanowires[J]. Rare Metal Materials and Engineering,2017,46(12):3601~3605.]
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History
- Received:October 14,2016
- Revised:February 06,2017
- Adopted:February 20,2017
- Online: January 04,2018