Artificially controlled nanoscale chemical reduction in VO₂ through electron beam illumination.

ABSTRACT: Chemical reduction in oxides plays a crucial role in engineering the material properties through structural transformation and electron filling. Controlling the reduction at nanoscale forms a promising pathway to harvest functionalities, which however is of great challenge for conventional methods (e.g., thermal treatment and chemical reaction). Here, we demonstrate a convenient pathway to achieve nanoscale chemical reduction for vanadium dioxide through the electron-beam illumination. The electron beam induces both surface oxygen desorption through radiolytic process and positively charged background through secondary electrons, which contribute cooperatively to facilitate the vacancy migration from the surface toward the sample bulk. Consequently, the VO₂ transforms into a red

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC10329014 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature