In Situ Triggering and Dynamically Tracking the Phase Transition in Vanadium Dioxide

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• 作者：Ming Li ; Dengbing Li ; Jing Pan ; Hao Wu ; Li Zhong ; Qiang Wang ; Guanghai Li
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：July 24, 2014
• 年：2014
• 卷：118
• 期：29
• 页码：16279-16283
• 全文大小：265K
• ISSN：1932-7455

文摘

As the most widely studied thermochromic material, monoclinic vanadium dioxide (VO₂ (M)) shows promising applications in the energy-saving field. Solid-state transformation, especially fast annealing, plays an important role in the production of VO₂ nanomaterials. On the other hand, the fast process makes it impossible to real-time monitor the phase transition in VO₂. In this paper, a differential scanning calorimetry technique is proposed to in situ trigger and dynamically track the phase transition of VO₂ nanoparticles, which gives a distinguished method to identify the underlying size-dependent and defect-mediated structure phase transition.