caa a22 4500 463213653 CHVBK 20180405153149.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s00339-007-4133-3 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4133-3 Liaw J.-W Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hwa 1st Rd., Kwei-Shan, 333, Tao-Yuan, Taiwan, R.O.C. aut The quantum yield of a metallic nanoantenna [Elektronische Daten] [J.-W. Liaw] 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. Springer-Verlag, 2007 Applied Physics A Springer-Verlag 89/2(2007-11-01), 357-362 0947-8396 89:2<357 2007 89 339 https://doi.org/10.1007/s00339-007-4133-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4133-3 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Liaw J.-W Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hwa 1st Rd., Kwei-Shan, 333, Tao-Yuan, Taiwan, R.O.C aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/2(2007-11-01), 357-362 0947-8396 89:2<357 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer