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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Tunable Optical Performances on a Periodic Array of Plasmonic Bowtie Nanoantennas with Hollow Cavities

Fig. 3

a Near-field distributions, energy flows (cyan arrows), and electrical filed stream lines (purple lines) corresponding to bonding modes (absorption spectra) for case 1 at λ res = 1.19 μm, for case 2 at λ res = 1.93 μm, for case 3 at λ res = 2.14 μm, and for case 4 at λ res = 2.36 μm, respectively. b Schematic charge densities corresponding to bonding modes of the cases 1–4

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