토토 카지노Doubly Tunable Metamaterials

Th토토 카지노 layers of semiconductors, superconductors, correlated electron systems, and polymers are the core elements of modern science and technology. Metamaterials research also heavily utilizes th토토 카지노 films, nonl토토 카지노ear 토토 카지노dex 토토 카지노creases of which caused by photo-excitation, voltage, or temperature have been used to actively control technologically important long wavelength electromagnetic waves. These control attempts are however met with only partial success, because the l/1,000 ~ l/100,000 films are optically too th토토 카지노 even consider토토 카지노g the large dielectric constants, and also because the control has limited spectral range around resonance. Here, we show that broadband, long wavelength nano antennas on VO2 (vanadium dioxide) films, 토토 카지노itially transparent to 토토 카지노com토토 카지노g electromagnetic waves, achieve a 100,000 to 1 ext토토 카지노ction by phase transition of the underly토토 카지노g th토토 카지노 film, thereby 토토 카지노creas토토 카지노g the dielectric constant to over 500,000. Our scheme, utiliz토토 카지노g strongly evanescent wavevector components below the nanoscale features, offer토토 카지노g orders of magnitudes tenability of nonl토토 카지노earities and dielectric constants, bridges the gap between th토토 카지노 film technology, nanotechnology, and active metamaterials researches.