5 citations · 10 across the 17 of their papers we have counts for
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Interface Conditions for Wave Propagation Through a Time-varying Metasurface
Vishnu Raveendran, Barbara Verfürth
We study wave propagation through a time-modulated thin heterogeneous layer. The layer is assumed to have a thickness of order $\es\ll 1$ and its material properties exhibit rapid…
Optimization-Based Identification of Effective Coefficients for Wave Equations in Spatio-Temporal Metamaterials
Christian Döding, Vishnu Raveendran, Barbara Verfürth
We study the identification of effective coefficients for wave equations in heterogeneous media. Such equations arise in the modeling of spatio-temporal metamaterials, where the un…
Nonlinear Helmholtz equations with sign-changing diffusion coefficient
Rainer Mandel, Zoïs Moitier, Barbara Verfürth
In this paper we study nonlinear Helmholtz equations with sign-changing diffusion coefficients on bounded domains. The existence of an orthonormal basis of eigenfunctions is establ…
Mathematical analysis of transmission properties of electromagnetic meta-materials
Mario Ohlberger, Ben Schweizer, Maik Urban +1
We study time-harmonic Maxwell's equations in meta-materials that use either perfect conductors or high-contrast materials. Based on known effective equations for perfectly conduct…