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Scattering and absorption of electromagnetic waves on a plane with hemispherical bosses
Author(s) -
Gu Xiaoxiong
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22855
Subject(s) - multipole expansion , scattering , microwave , absorption (acoustics) , plane wave , discrete dipole approximation , dipole , lossy compression , electromagnetic radiation , surface (topology) , optics , computational physics , plane (geometry) , physics , electromagnetic field , mathematics , geometry , quantum mechanics , statistics
We apply multiple scattering equations to study the scattering of electromagnetic waves on a perfectly conducting plane surface with a random dense distribution of hemispherical bosses. We derive a multipole solution up to third order to analyze close range interactions between nearby bosses. Results show significant improvement of accuracy compared with the traditional dipole approximation solution. Absorption on a lossy embossed surface is obtained from the field solution for the perfectly conducting surface. The surface current and absorption enhancement factor are further computed numerically. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2681–2686, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22855