High-resolution interference microscopy with spectral resolution for the characterization of individual particles and self-assembled meta-atoms

Article Article scientifique Article High-resolution interference microscopy with spectral resolution for the characterization of individual particles and self-assembled meta-atoms eng 2019 author Symeonidis Michail 874951 author Suryadharma Radius author Grillo Rossella 842596 author Vetter Andreas author Rockstuhl Carsten author Buergi Thomas 727741 author Scharf Toralf 20990 10.1364/OE.27.020990 1094-4087 https://www.osapublishing.org/abstract.cfm?URI=oe-27-15-20990 We apply a high-resolution interference microscope with spectral resolution to investigate the scattering response of isolated meta-atoms in real space. The final meta-atoms consist of core-shell clusters that are fabricated using a bottom-up approach. The meta-atoms are investigated with an increasing complexity. We start by studying silica and gold spheres and conclude with the investigation of the meta-atom, which consists of a silica core sphere onto which gold nanospheres are attached. Numerical simulations entirely verify the measured data. The measuring process involves recording the intensity and phase of the total field emerging from the scattering process of an incident light at the particle in the transmitted half-space with spectral and high spatial resolution. We show that spectrally resolved high-resolution interference microscopy can be used to differentiate between nanoparticles and characterize single meta-atoms, something that is rarely accomplished. Dewey 540 38 Département de chimie physique 142 false Optics Express 27 15 ae4d8d91-c2cf-4120-8524-6afb12988c9e Article (Published version) Public Highresolution_TB_19.pdf 8014753 application/pdf openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

Title	Published in	Access level	OA Policy	Year	Views	Downloads

High-resolution interference microscopy with spectral resolution for the characterization of individual particles and self-assembled meta-atoms	Optics Express			2019	369	236

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Symeonidis, Michail