| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Advances in the Applications of Flexible Vanadium Dioxide Thin Films |
| LI Xin, ZHOU Han*
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| State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract Vanadium dioxide (VO2), owing to its reversible metal-insulator transition (MIT) property, has emerged as a highly promising research candidate in the field of intelligent materials. Currently, most studies pertaining to VO2 are confined to rigid substrates, which exhibit limitations including poor conformability and inadequate compatibility with mechanical deformation, thereby making it challenging to meet the adaptability demands across diverse scenarios. To overcome the constraints of application scenarios, improving the flexibility and ductility of VO2 thin films has become a critical research focus. Flexible VO2 thin films demonstrate significant advantages in aspects of flexibility in structural design and environmental compatibility. Their MIT property can be triggered by multiple external stimuli such as thermal, optical, electrical, and mechanical fields, offering core material support for the integration of multifunctional devices. Beginning with the phase transition mechanism of VO2, this paper elucidates its intrinsic advantages as a core material for flexible devices, outlines the design principles for flexible VO2 thin-film structures, systematically reviews the application advances of flexible VO2 thin films in domains including intelligent thermal control, optical devices, electronic devices, and multifunctional sensors, simultaneously summarizes the optimization pathways and technological breakthroughs in preparation processes, and provides prospects for the future development trends and practical application challenges of VO2 in the field of advanced flexible devices.
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Published: 10 August 2026
Online: 2026-08-31
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