Single‐Crystalline W‐Doped VO2 Nanobeams with Highly Reversible Electrical and Plasmonic Responses Near Room Temperature

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Single‐crystalline vanadium dioxide (VO2) nanostructures are of great interest because of their single‐domain metal‐to‐insulator transition. In this paper, single‐crystalline W‐doped VO2 nanobeams are synthesized for optical and electrical applications. As a result of differences in the polarization of the beams along their transverse and longitudinal axes, dual‐surface plasmon resonance peaks at 1344 and 619 nm are generated, resulting in an increase in the solar modulating abilities of the VO2 nanobeams. The conductivity of the single‐crystalline W‐doped VO2 nanobeams changes by three to four orders of magnitude at the transition temperature, which is of great importance for electrical applications.