7 research outputs found

    Visualization1.avi

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    Phase reconstruction of an oscillating dielectric disc pendulum, recorded using off-axis holography at 290 GHz. Frames captured at 25 fps = Exp3. !May contain flashing patterns

    Visualization2.avi

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    Phase reconstruction of an oscillating dielectric disc pendulum, recorded using off-axis holography at 290 GHz. Frames captured at 43 fps = Exp2. !May contain flashing patterns

    Visualization3.avi

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    Phase reconstruction of an oscillating dielectric disc pendulum, recorded using off-axis holography at 290 GHz. Frames captured at 72 fps = Exp1. !May contain flashing patterns

    Visualization4.avi

    No full text
    Phase reconstruction of an oscillating dielectric disc pendulum, recorded using off-axis holography at 290 GHz. Frames captured at 103 fps = Exp0. !May contain flashing patterns

    Induced Chirality through Electromagnetic Coupling between Chiral Molecular Layers and Plasmonic Nanostructures

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    We report a new approach for creating chiral plasmonic nanomaterials. A previously unconsidered, far-field mechanism is utilized which enables chirality to be conveyed from a surrounding chiral molecular material to a plasmonic resonance of an achiral metallic nanostructure. Our observations break a currently held preconception that optical properties of plasmonic particles can most effectively be manipulated by molecular materials through near-field effects. We show that far-field electromagnetic coupling between a localized plasmon of a nonchiral nanostructure and a surrounding chiral molecular layer can induce plasmonic chirality much more effectively (by a factor of 10<sup>3</sup>) than previously reported near-field phenomena. We gain insight into the mechanism by comparing our experimental results to a simple electromagnetic model which incorporates a plasmonic object coupled with a chiral molecular medium. Our work offers a new direction for the creation of hybrid molecular plasmonic nanomaterials that display significant chiroptical properties in the visible spectral region
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