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  • Reconfigurable Plasmonic Ch...
    Neubrech, Frank; Hentschel, Mario; Liu, Na

    Advanced materials (Weinheim), 10/2020, Letnik: 32, Številka: 41
    Journal Article

    Molecular chirality is a geometric property that is of great importance in chemistry, biology, and medicine. Recently, plasmonic nanostructures that exhibit distinct chiroptical responses have attracted tremendous interest, given their ability to emulate the properties of chiral molecules with tailored and pronounced optical characteristics. However, the optical chirality of such human‐made structures is in general static and cannot be manipulated postfabrication. Herein, different concepts to reconfigure the chiroptical responses of plasmonic nano‐ and micro‐objects are outlined. Depending on the utilized strategies and stimuli, the chiroptical signature, the 3D structural conformation, or both can be reconfigured. Optical devices based on plasmonic nanostructures with reconfigurable chirality possess great potential in practical applications, ranging from polarization conversion elements to enantioselective analysis, chiral sensing, and catalysis. The chiroptical response of artificial metal nanostructures can be manipulated postfabrication. Different approaches to reconfigure the chiroptical spectral signature, the structural conformation of the plasmonic systems, or both, are presented. The discussed concepts have the potential to serve as key elements in future optical systems and chiral sensing.