3 papers
math.NA2025
FloquetBloch analysis of wave propagation with time-periodic coefficients
Jörg Nick, Ralf Hiptmair, Habib Ammari
This paper presents a numerical investigation of acoustic wave propagation in an obstacle with periodically time-modulated material parameters. We focus on the numerical constructi…
math.AP2025
Exceptional point enhanced small particle detection in systems of subwavelength resonators
Jinghao Cao, Jörg Nick
This paper considers the effects of small highly contrasted particles on the subwavelength resonances of a system of high-contrast resonators, with an application to sensing. The k…
math.NA2024
Parsimonious convolution quadrature
Jens M. Melenk, Jörg Nick
We present a method to rapidly approximate convolution quadrature (CQ) approximations, based on a piecewise polynomial interpolation of the Laplace domain operator, which we call t…