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A new introduction to spatial dispersion: Reimagining the basic concepts

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Article number100897
<mark>Journal publication date</mark>28/02/2021
<mark>Journal</mark>Photonics and Nanostructures - Fundamentals and Applications
Number of pages8
Publication StatusPublished
Early online date5/02/21
<mark>Original language</mark>English


I describe three ways that the spatial properties of a wave propagation medium can cause dispersion, and propose that they should form the basics for correctly understanding and naming phenomena described as “spatial dispersion”. In particular, I emphasise the specific spatial properties which generate the resulting dispersive – i.e. spatially dispersive – behaviour. The properties are geometry, structure, and dynamics.