154 research outputs found

    Optical tweezers with enhanced efficiency based on laser-structured substrates

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    We present an optical nanotrapping setup that exhibits enhanced efficiency, based on localized plasmonic fields around sharp metallic features. The substrates consist of laser-structured silicon wafers with quasi-ordered microspikes on the surface, coated with a thin silver layer. The resulting optical traps show orders of magnitude enhancement of the trapping force and the effective quality factor

    Biophotonics in diagnosis and modeling of tissue pathologies

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