Abstract
At present, it remains challenging and desirable to prepare dynamic color-changing materials with wide viewing angles for practical applications. Herein, we proposed a responsive asymmetric metal-insulator-metal (MIM) Fabry-Perot resonance cavity to achieve dynamic color display with high viewing-angle tolerance. The responsive asymmetric MIM cavity is constructed with thermal-responsive poly(N-isopropyl acrylamide) (PNIPAm) brush as the mid-insulator layer sandwiched by two different metallic layers (Sn and Ag). The as-prepared MIM cavity shows both improved viewing-angle tolerance owing to the asymmetric architecture of the cavity and a wide tunable color gamut because of the thermal responsiveness of the mid PNIPAm layer. Remarkably, the as-prepared asymmetric MIM resonance cavity also possesses a relatively fast response rate and good repeatability. Together, with all these advantages, the proposed responsive asymmetric MIM cavity may open a new pathway to prepare high-performance color display material for future practical optical applications.
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