A fast direct solver for scattering from periodic structures with multiple material interfaces in two dimensions

Leslie Greengard, Kenneth L. Ho, June Yub Lee

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We present a new integral equation method for the calculation of two-dimensional scattering from periodic structures involving triple-points (multiple materials meeting at a single point). The combination of a robust and high-order accurate integral representation and a fast direct solver permits the efficient simulation of scattering from fixed structures at multiple angles of incidence. We demonstrate the performance of the scheme with several numerical examples.

Original languageEnglish
Pages (from-to)738-751
Number of pages14
JournalJournal of Computational Physics
Volume258
DOIs
StatePublished - 1 Feb 2014

Keywords

  • Acoustic scattering
  • Boundary integral equations
  • Electromagnetic scattering
  • Fast direct solvers
  • Multiple material interfaces
  • Triple junctions

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