Fluorescence enhancement by dark plasmon modes

Fluorescence enhancement by dark plasmon modes

We investigate the fluorescence properties of colloidal quantum dots attached to gold rod nanoantennas. These structures are fabricated by a two step electron beam lithography process in combination with a chemical linking method. By varying the nanoantenna length, the plasmon modes of the nanoanten...

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Veröffentlicht in:arXiv.org 2017-10
Hauptverfasser: Manuel, Peter, Werra, Julia F M, Friesen, Cody, Achnitz, Doreen, Busch, Kurt, Linden, Stefan
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Electron beam lithography
Fluorescence
Gold
Organic chemistry
Physics - Optics
Quantum dots
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Werra, Julia F M
Friesen, Cody
Achnitz, Doreen
Busch, Kurt
Linden, Stefan
description We investigate the fluorescence properties of colloidal quantum dots attached to gold rod nanoantennas. These structures are fabricated by a two step electron beam lithography process in combination with a chemical linking method. By varying the nanoantenna length, the plasmon modes of the nanoantennas are successively tuned through the emission band of the quantum dots. We observe a pronounced fluorescence enhancement both for short and long nanoantennas. These findings can be attributed to the coupling of the quantum dots to bright and dark plasmon modes, respectively.
doi_str_mv 10.48550/arxiv.1710.02832
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subjects Electron beam lithography
Fluorescence
Gold
Organic chemistry
Physics - Optics
Quantum dots
title Fluorescence enhancement by dark plasmon modes
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