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Plasmonic Antennas
Kvapil, Michal ; Brzobohatý, Oto (oponent) ; Novák, Stanislav (oponent) ; Šikola, Tomáš (vedoucí práce)
This doctoral thesis deals with plasmonic antennas. The resonant properties of plasmonic antennas have been studied both theoretically and experimentally. Theoretical calculations have been made using the finite-difference time-domain numerical method in Lumerical FDTD Solutions software. For the experiments, antennas were fabricated by electron beam lithography. Resonant properties of the fabricated antennas have been studied by Fourier transform infrared spectroscopy. The thesis is aimed at the investigation of the resonant properties of plasmonic antennas, when situated on a film of nanocrystalline diamond. Also, the application of antennas as a plasmon-based sensor functionalized to streptavidin sensing has been investigated. Finally, an antenna with the shape of the letter V has been introduced. Due to the reduced symmetry of the V-antenna, the incident light of wavelength close to an antenna quadrupole mode is unidirectionally scattered.

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