title: Thermal tuning of mid-infrared plasmonic antenna arrays using a phase change material.
abstract: We demonstrate that the resonances of infrared plasmonic antennas can be tuned or switched on/off by taking advantage of the thermally driven insulator-to-metal phase transition in vanadium dioxide (VO(2)). Y-shaped antennas were fabricated on a 180 nm film of VO(2) deposited on a sapphire substrate, and their resonances were shown to depend on the temperature of the VO(2) film in proximity of its phase transition, in good agreement with full-wave simulations. We achieved tunability of the resonance wavelength of approximately 10% (>1 μm at λ~10 μm).
authors: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
authors: Mikhail A
authors: MA
authors: Kats
authors: Romain
authors: R
authors: Blanchard
authors: Patrice
authors: P
authors: Genevet
authors: Zheng
authors: Z
authors: Yang
authors: M Mumtaz
authors: MM
authors: Qazilbash
authors: D N
authors: DN
authors: Basov
authors: Shriram
authors: S
authors: Ramanathan
authors: Federico
authors: F
authors: Capasso