Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Stable GSTC formulation for Maxwell’s equations

Abstract : We revisit the classical zero-thickness Generalized Sheet Transition Conditions (GSTCs) which are a key tool for efficiently designing metafilms able to control the flow of light in a desired way. It is shown that it is more convenient to use an enlarged formulation of the GSTC in which the original metafilm is replaced by GSTCs that exclude the layer from the physical or computational domain. These new "layer" transition conditions have the same form as their "sheet" analogues hence they do not necessitate additional complications in their use; their advantage is that they provide a well-posed problem hence guaranty the stability of numerical schemes in the timedomain. These assessments are demonstrated for an all-dielectric structure; the effective susceptibility tensors are derived thanks to asymptotic analysis combined with homogenization technique and bounds for the susceptibilities entering the balance of energy are provided. While negative constant susceptibilities appear in the classical zero-thickness GSTCs, their values in the enlarged formulation are always positive which ensure the stability of the effective problem. Validation of the effective model is provided by means of comparison with direct numerics in two and three dimensions.
Complete list of metadata

https://hal.inria.fr/hal-03203013
Contributor : Nicolas Lebbe <>
Submitted on : Tuesday, April 20, 2021 - 2:04:30 PM
Last modification on : Monday, May 3, 2021 - 10:49:52 AM

File

LebbePhamMaurel.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-03203013, version 1

Citation

Nicolas Lebbe, Kim Pham, Agnès Maurel. Stable GSTC formulation for Maxwell’s equations. 2021. ⟨hal-03203013⟩

Share

Metrics

Record views

68

Files downloads

215