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Comparison of the resonant frequency in graphene and metallic nano-antennas

by: Ignacio Llatser, Christian Kremers, Albert C. Aparicio, Eduard Alarcón, Dmitry N. Chigrin

edited by: Dmitry N. Chigrin

AIP Conference Proceedings, Vol. 1475, No. 1. (2012), pp. 143-145, doi:10.1063/1.4750123  Key: citeulike:11936072

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Abstract

The scalability of the resonant frequency in graphene-based nano-antennas (graphennas) and metallic nanoantennas as a function of their length is analyzed. The antenna resonances are obtained by combining the dispersion relation in free-standing graphene and gold layers, respectively, with the resonance condition. Graphennas are found to have a better scalability in terms of their resonant frequency with respect to metallic nano-antennas as their length is reduced to a few μm. These results open up the possibility to build micrometer-sized graphennas that resonate in the terahertz band, at a frequency up to two orders of magnitude below metallic nano-antennas with the same size. Graphennas are thereby envisaged to enable the implementation of wireless communications among nanosystems.


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