Casimir force for complex objects using domain decomposition techniques

Phillip R. Atkins, Weng Cho Chew, Mao Kun Li, Lin E. Sun, Zu Hui Ma, Li Jun Jiang

Research output: Contribution to journalArticlepeer-review


A method for calculating the Casimir force between large, complex 3D objects is presented. Difficulties have previously arisen in broadband multiscale calculation using CEM methods. To expand the range of problems that can be calculated, we use an integral equation, domain decomposition method (DDM) and argument principle to derive the Casimir force formula. The broadband integral equation DDM, which is the augmented equivalence principle algorithm (A-EPA), allows for an efficient broadband solution of large, complex objects. A-EPA subdivides a complex problem into separate smaller subproblems that are later recombined into a reduced matrix. This yields a reduced number of unknowns for complex structures making them feasible with modest computer resources. We demonstrate the advantages of the A-EPA by simulating large, finite, 3D, unaligned corrugated plates, which have previously only been modeled approximately as infinite plates using 2D techniques.

Original languageEnglish (US)
Pages (from-to)275-280
Number of pages6
JournalProgress in Electromagnetics Research
StatePublished - 2014

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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