Abstract
Chiral plasmonic nanomaterials─with their significant applications in protein detection, drug screening, and enantioselective sensing─necessitate an industrialized fabrication procedure to enhance their commercial viability. However, the prevailing manufacturing of chiral plasmonic nanoparticles and assemblies heavily leans on manual intervention, causing time-consuming and quality-inconsistent concerns. Here, we develop an automated, continuous mechanical synthesis system that consistently sprays metal nanowires to create chiroplasmonic assemblies: a macroscopic twisted layered structure comprising equivalent linear birefringence layers, approximate linear polarizer layers, and a precise angular offset between them. Utilizing the synthesis-with-automation system, we scale up the production of chiral plasmonic films, generating high optical asymmetry (g-factor, with the order of 10-1) across a broadband ranging from ultraviolet to near-infrared wavelengths. We further introduce the portable chiral sensing, expanding plasmonic assemblies into flexible materials and integrating them with wearable real-time display devices. Our mechanically driven, continuous synthesis of chiral plasmonic structures presents an intriguing pathway to facilitate functional chiral structures toward practice.
Published Version
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