Defect-Tolerant Plasmonic Elliptical Resonators for Long-Range Energy Transfer.

Autor:	Antolinez FV; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Winkler JM; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Rohner P; Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Kress SJP; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Keitel RC; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Kim DK; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Marqués-Gallego P; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Cui J; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Rabouw FT; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Poulikakos D; Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland., Norris DJ; Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zurich , 8092 Zurich , Switzerland.
Jazyk:	angličtina
Zdroj:	ACS nano [ACS Nano] 2019 Aug 27; Vol. 13 (8), pp. 9048-9056. Date of Electronic Publication: 2019 Jul 16.
DOI:	10.1021/acsnano.9b03201
Abstrakt:	Energy transfer allows energy to be moved from one quantum emitter to another. If this process follows the Förster mechanism, efficient transfer requires the emitters to be extremely close (<10 nm). To increase the transfer range, nanophotonic structures have been explored for photon- or plasmon-mediated energy transfer. Here, we fabricate high-quality silver plasmonic resonators to examine long-distance plasmon-mediated energy transfer. Specifically, we design elliptical resonators that allow energy transfer between the foci, which are separated by up to 10 μm. The geometry of the ellipse guarantees that all plasmons emitted from one focus are collected and channeled through different paths to the other focus. Thus, energy can be transferred even if a micrometer-sized defect obstructs the direct path between the focal points. We characterize the spectral and spatial profiles of the resonator modes and show that these can be used to transfer energy between green- and red-emitting colloidal quantum dots printed with subwavelength accuracy using electrohydrodynamic nanodripping. Rate-equation modeling of the time-resolved fluorescence from the quantum dots further confirms the long-distance energy transfer.
Databáze:	MEDLINE
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