Dashen Dong

1 Introduction As paramount metal nanomaterials, gold-based nanomaterials feature advantageous physicochemical properties,[1-3] such as high chemical stability, pronounced plasmonic effect, tunable optical properties, good biocompatibility, and high sensing specificity.[4, 5] Hence, Au nanomaterials have been widely utilized in electronics, catalysis, solar cells, thermal ablative therapy, sensing, imaging, and many other applications.[6] Among various synthesis strategies, the specific...

Abstract Freestanding plasmonic nanoparticle (NP) superlattice sheets are novel 2D nanomaterials with tailorable properties that enable their use for broad applications in sensing, anticounterfeit measures, ionic gating, nanophotonics and flat lenses. We recently developed a robust, yet general, two-step drying-mediated approach to produce freestanding monolayer, plasmonic NP superlattice sheets, which are typically held together by holey grids with minimal solid support.