Picture of Open Access badges

Discover Open Access research at Strathprints

It's International Open Access Week, 24-30 October 2016. This year's theme is "Open in Action" and is all about taking meaningful steps towards opening up research and scholarship. The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Explore recent world leading Open Access research content by University of Strathclyde researchers and see how Strathclyde researchers are committing to putting "Open in Action".


Image: h_pampel, CC-BY

Calculation of internal and scattered fields of axisymmetric nanoparticles at any point in space

Holms, K. and Hourahine, B. and Papoff, F. (2009) Calculation of internal and scattered fields of axisymmetric nanoparticles at any point in space. Journal of Optics A: Pure and Applied Optics, 11 (5). ISSN 1464-4258

holms.pdf - Accepted Author Manuscript

Download (940kB) | Preview


We present a method of simultaneously calculating both the internal and external fields of arbitrarily shaped dielectric and metallic axisymmetric nanoparticles. By using a set of distributed spherical vector wavefunctions that are exact solutions to Maxwell's equations and which form a complete, linearly independent set on the particle surface, we approximate the surface Green functions of particles. In this way we can enforce the boundary conditions at the interface and represent the electromagnetic fields at the surface to an arbitrary precision. With the boundary conditions at the particle surface satisfied, the electromagnetic fields are uniquely determined at any point in space, whether internal or external to the particle. Furthermore, the residual field error at the particle surface can be shown to give an upper bound error for the field solutions at any point in space. We show the accuracy of this method with two important areas studied widely in the literature, photonic nanojets and the internal field structure of nanoparticles.