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Plasmonic nanoparticles combine fascinating physical properties with the compatibility with the molecular world regarding size scale as well as chemical approaches. They allow for sensoric measurements at a nanometer lateral resolution such as in cells or even organelles but by optical tools. Moreover, beside this passive readout, also active optical manipulation of individual particles using their nanoantenna capabilities is possible at the same scale with nanometer precision. We will illustrate both sides of this impressing developments by results form our work.

plasmonic nanoparticles, biomolecules, bioanalytics