Comparison of the Resonant Frequency in Graphene and Metallic Nano-antennas
نویسندگان
چکیده
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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