Dynamic Plasmonic Color Generation Based on PhaseTransition of Vanadium Dioxide

摘要

Plasmonic color filtering and color printing have attracted considerableattention in recent years due to their supreme performance in display andimaging technologies. Although various color-related devices are designed, sofar very few studies have touched the topic of dynamic color generation. In thisarticle, dynamic color generation is demonstrated by integrating plasmonicnanostructures with vanadium dioxide based on its tunable optical propertiesthrough insulator–metal transition. Periodic arrays of silver nanodisks on avanadium dioxide film are fabricated to realize different colors, relying on theexcitation of localized and propagating surface plasmons, and Wood’s anomaly.By tuning spatial periodicity of the arrays and diameter of the silver nanodisks,various colors can be achieved across the entire visible spectrum. Further,using insulator–metal transition of vanadium dioxide, the colors can be activelytuned by varying temperature. The approach of dynamic color generationbased on the phase transition of vanadium dioxide can easily realize diversecolor patterns, which makes it beneficial for display and imaging technologywith distinct advantages of multifunctionality, flexibility, and high efficiency.