Eliminating electromagnetic scattering from small particles

Joni Vehmas, Younes Ra'Di, Antti O. Karilainen, Sergei A. Tretyakov

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


This paper presents and discusses the conditions for zero electromagnetic scattering by electrically small particles. We consider the most general bi-anisotropic particles, characterized by four dyadic polarizabilities and study the case of uniaxially symmetric objects. Conditions for zero backward and forward scattering are found for a general uniaxial bi-anisotropic particle and specialized for all fundamental classes of bi-anisotropic particles: omega, 'moving', chiral, and Tellegen particles. Possibility for zero total scattering is also discussed for aforementioned cases. The scattering pattern and polarization of the scattered wave are also determined for each particle class. In particular, we analyze the interplay between different scattering mechanisms and show that in some cases it is possible to compensate scattering from a polarizable particle by appropriate magneto-electric coupling. Examples of particles providing zero backscattering and zero forward scattering are presented and studied numerically.

Original languageEnglish (US)
Article number6514502
Pages (from-to)3747-3756
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Issue number7
StatePublished - 2013
Externally publishedYes


  • Bi-anisotropic media
  • scattering

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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