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Updated: Jun 6, 2025

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
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Selective Laser Doping and Dedoping for Phase Engineering in Vanadium Dioxide Film.

He Ma1, Yuan Li1, Jianhua Hao1

  • 1Institute of Information Photonics Technology and School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China.

Small Methods
|November 29, 2024
PubMed
Summary

Researchers developed a laser-writing technique to precisely control the metal-to-insulator transition (MIT) in vanadium dioxide (VO2) films. This efficient method enables the creation of reconfigurable micro/nanophotonic and electronic devices with enhanced functionality.

Keywords:
infrared camouflagelaser doping and dedopingmemristorphase transitionvanadium dioxide

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Condensed Matter Physics

Background:

  • Vanadium dioxide (VO2) exhibits a reversible metal-to-insulator transition (MIT) crucial for configurable photonic and electronic devices.
  • Precise control over VO2's MIT at the micro/nanoscale is essential for miniaturized and integrated device applications.
  • Current tailoring methods, such as scanning probe microscopy, lack efficiency and adaptability for complex or curved surfaces.

Purpose of the Study:

  • To develop a highly efficient and adaptable technique for locally engineering the phase transition of VO2 films.
  • To enable the fabrication of reconfigurable, non-volatile, and multifunctional VO2-based micro/nanophotonic and micro/nanoelectronic devices.

Main Methods:

  • Utilized laser writing to assist in localized hydrogen doping and dedoping processes in VO2 films.
  • Demonstrated the flexibility of laser-assisted doping/dedoping for precise phase engineering.

Main Results:

  • Achieved high-efficiency local engineering of the VO2 phase transition using the laser writing technique.
  • Successfully fabricated reconfigurable, non-volatile, and multifunctional VO2 devices through laser doping and dedoping.

Conclusions:

  • The laser-assisted hydrogen doping/dedoping method provides an efficient and flexible approach for tailoring VO2's MIT.
  • This technique establishes a new paradigm for creating advanced reconfigurable micro/nanophotonic and micro/nanoelectronic devices.