Balanced and optimal bianisotropic particles: Maximizing power extracted from electromagnetic fields

Younes Ra'Di, Sergei A. Tretyakov

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Here we introduce the concept of 'optimal particles' for strong interactions with electromagnetic fields. We assume that a particle occupies a given electrically small volume in space and study the required optimal relations between the particle polarizabilities. In these optimal particles, the inclusion shape and material are chosen so that the particles extract the maximum possible power from given incident fields. It appears that for different excitation scenarios the optimal particles are bianisotropic chiral, omega, moving and Tellegen particles. The optimal dimensions of resonant canonical chiral and omega particles are found analytically. Such optimal particles have extreme properties in scattering (e.g., zero backscattering or invisibility). Planar arrays of optimal particles possess extreme properties in reflection and transmission (e.g. total absorption or magnetic-wall response), and volumetric composites of optimal particles realize, for example, such extreme materials as the chiral nihility medium.

Original languageEnglish (US)
Article number053008
JournalNew Journal of Physics
StatePublished - May 2013
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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