Optical response of dipole antennas on an epsilon-near-zero substrate

Sebastian A. Schulz, Asad A. Tahir, M. Zahirul Alam, Jeremy Upham, Israel De Leon, Robert W. Boyd

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Materials with vanishing permittivity (epsilon-near-zero or ENZ materials) show unconventional optical behavior. Here we show that plasmonic dipole antennas on an ultrathin ENZ substrate have properties significantly different from antennas on a traditional substrate. Specifically, the presence of a 23-nm-thick ENZ material strongly modifies the linear response of plasmonic antennas and, as a result, the resonant wavelength is independent of the linear dimensions of the dipole antenna.
Original languageEnglish
Article number063846
Number of pages4
JournalPhysical Review. A, Atomic, molecular, and optical physics
Volume93
Issue number6
DOIs
Publication statusPublished - 27 Jun 2016

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