Abstract
An innovative method that enables the deployment of thermochromic VO2 microstructures at room temperature for infrared (IR) modulation.
Highlights
Delaminated VO2 is introduced into isopropyl alcohol (IPA) to enable rapid room-temperature drying before being drop-cast on glass and polyethylene terephthalate (PET) substrates for characterization
A synthesis method is demonstrated that overcomes the high processing temperatures required for producing thermochromic VO2 films, and the associated limitations in the choice of substrates
Using a van der Waals substrate with inert basal planes and hydrophilic surfaces such as mica allows for the facile delamination of the synthesized oxide into aqueous colloidal suspension
Summary
We characterize the VO2 suspension and observe IMT using in situ transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray photoelectron spectroscopy (XPS), before introducing VO2 to standard glass and a flexible substrate with low thermal stability (PET) for optical characterization.
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