Nanoscale Engineering in VO2 Nanowires via Direct Electron Writing Process

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

9 Scopus Citations
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Author(s)

  • Zhenhua Zhang
  • Hua Guo
  • Wenqiang Ding
  • Bin Zhang
  • Yue Lu
  • Xiaoxing Ke
  • Weiwei Liu
  • Manling Sui

Detail(s)

Original languageEnglish
Pages (from-to)851-855
Journal / PublicationNano Letters
Volume17
Issue number2
Early online date12 Jan 2017
Publication statusPublished - 8 Feb 2017
Externally publishedYes

Abstract

Controlling phase transition in functional materials at nanoscale is not only of broad scientific interest but also important for practical applications in the fields of renewable energy, information storage, transducer, sensor, and so forth. As a model functional material, vanadium dioxide (VO2) has its metal-insulator transition (MIT) usually at a sharp temperature around 68 °C. Here, we report a focused electron beam can directly lower down the transition temperature of a nanoarea to room temperature without prepatterning the VO2. This novel process is called radiolysis-assisted MIT (R-MIT). The electron beam irradiation fabricates a unique gradual MIT zone to several times of the beam size in which the temperature-dependent phase transition is achieved in an extended temperature range. The gradual transformation zone offers to precisely control the ratio of metal/insulator phases. This direct electron writing technique can open up an opportunity to precisely engineer nanodomains of diversified electronic properties in functional material-based devices.

Research Area(s)

  • Vanadium dioxide (VO2), metal-insulator transition (MIT), transition temperature, radiolysis, oxygen vacancy, domain wall

Citation Format(s)

Nanoscale Engineering in VO2 Nanowires via Direct Electron Writing Process. / Zhang, Zhenhua; Guo, Hua; Ding, Wenqiang; Zhang, Bin; Lu, Yue; Ke, Xiaoxing; Liu, Weiwei; Chen, Furong; Sui, Manling.

In: Nano Letters, Vol. 17, No. 2, 08.02.2017, p. 851-855.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review