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Vortex-like surface wave and its role in the transient phenomena of meta-material focusing
We show that a slab of meta-material (with )
possesses a vortex-like surface wave with no ability to transport energy, whose
nature is completely different from a localized mode or a standing wave.
Through computations based on a rigorous time-dependent Green's function
approach, we demonstrate that such a mode inevitably generates characteristic
image oscillations in two dimensional focusing with even a monochromatic
source, which were observed in many numerical simulations, but such
oscillations are weak in three dimensional focusing.Comment: To appear in the March 7th issue of Appl. Phys. Let
Microwave induced elastic deformation of a metallic thin film
The microwave induced elastic deformation of a metallic thin film is computed
numerically and we found that the deformation can be significantly enhanced at
resonance. We show that an analytical transmission line model can reproduce the
numerical results almost quantitatively and at the same time reveal the
underlying physics.Comment: 8 pages,3 figure
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