Recrystallization of Single-Crystalline VO2 Microtube Arrays on V2O5 Substrate

Recrystallization of Single-Crystalline VO2 Microtube Arrays on V2O5 Substrate

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Diary Single-crystalline VO2 microtube arrays on V2O5 substrate were fabricated through a thermal oxidation route based on resistive heating V foil in air.Four sheets of as-fabricated single-crystalline VO2 microtube arrays on V2O5 substrate were then, respectively, heated to approximately 855 °C and 1660 °C to melt V2O5 or VO2.Thereafter, the melted V2O5 or VO2 was cooled rapidly or slowly to recrystallize the Generation 1 liquid V2O5 or VO2.The morphologies and phases of the recrystallization products were characterized by scanning electron microscopy and X-ray diffraction.

This study proposes that the peak temperature of heating and the cooling rate are responsible for the recrystallization products of single-crystalline VO2 microtube arrays on V2O5 substrate.