title: High load sensitivity in wideband infrared dual-Vivaldi nanoantennas.
abstract: Dual-Vivaldi nanoantenna (DVA) arrays were designed, fabricated, and optically characterized in the infrared (IR) and visible regimes. The antenna arrays were characterized by measuring the scattered light at IR (1450-1640 nm) and visible (780 nm) spectral ranges. The radiation efficiency and the spectral response of the antennas were found to be in good agreement with numerical simulations. The results presented here demonstrate the extremely wideband nature of the DVAs and the strong impact of load at the antenna terminals on its scattering response. These properties, as well as their many degrees of freedom for design, render the DVAs excellent candidates for optical sensing applications.
authors: Department of Physical Electronics, School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
authors: Yuval
authors: Y
authors: Yifat
authors: Zeev
authors: Z
authors: Iluz
authors: Doron
authors: D
authors: Bar-Lev
authors: Michal
authors: M
authors: Eitan
authors: Yael
authors: Y
authors: Hanein
authors: Amir
authors: A
authors: Boag
authors: Jacob
authors: J
authors: Scheuer