NDLI: The quantum yield of a metallic nanoantenna

Content Provider	Springer Nature Link
Author	Liaw, J. W.
Copyright Year	2007
Abstract	The local-field factor and quantum yield of a metallic nanoantenna are studied to identify its enhancement of an emitter’s emission within the feed gap. For simplicity, a two-dimensional model, an Au nanoantenna with an emitter at the center, is studied. The electromagnetic field is solved by a set of surface integral equations. An incident plane wave irradiating the nanoantenna is modeled to simulate the excitation of the emitter by illuminating light, and the local-field factor is used to evaluate the amplification of the electric field in the feed gap of the metallic nanoantenna. Once the emitter becomes excited, a model of an electric dipole interacting with the nanoantenna is used for calculating the radiative and nonradiative powers to obtain the quantum yield of the excited emitter in the presence of the nanoantenna. The numerical results of quantum yield indicate that an Au nanoantenna acts as a low-pass filter for the emission of the emitter. Moreover, the smaller the feed gap, the larger the local-field factor but the less the quantum yield.
Starting Page	357
Ending Page	362
Page Count	6
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	89
Issue Number	2
e-ISSN	14320630
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-06-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Operating Procedures, Materials Treatment Surfaces and Interfaces, Thin Films Characterization and Evaluation of Materials Nanotechnology Optical and Electronic Materials Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

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