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arXiv · 1601.04338

Enhancement of Resonant Energy Transfer Due to Evanescent-wave from the Metal

Amrit Poudel·Xin Chen·Mark A. Ratner
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Abstract

The high density of evanescent modes in the vicinity of a metal leads to enhancement of the near-field F\"{o}rster resonant energy transfer (FRET) rate. We present a classical approach to calculate the FRET rate based on the dyadic Green's function of an arbitrary dielectric environment, and consider non-local limit of material permittivity in case of metallic halfspace and thin film. In a dimer system, we find that the FRET rate is enhanced due to shared evanescent photon modes bridging a donor and an acceptor. Furthermore, a general expression for the FRET rate for multimer systems is derived. The presence of a dielectric environment and the path interference effect enhance the transfer rate, depending on the combination of distance and geometry.

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Amrit Poudel, Xin Chen, Mark A. Ratner. 2016-01-17. Enhancement of Resonant Energy Transfer Due to Evanescent-wave from the Metal. https://doi.org/10.1021/acs.jpclett.6b00119

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