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- W2949813360 abstract "We revisit the volume Green's function integral equation for modelling light scattering with discretization strategies as well as numerical integration recipes borrowed from finite element method. The merits of introducing finite element techniques into Green's function integral equation are apparent. Firstly, the finite element discretization provides a much better geometric approximation of the scatters, compared with that of the conventional discretization method using staircase approximation. Secondly, the accuracy of numerical integral inside one element associated with all different types of Green's function integral equations can be greatly improved by introducing quadrature rules. Within the standard framework of Green's function integral equation, we seamlessly introduce finite element techniques into the Green's function integral equation by introducing the auxiliary variables that confines the singular integrand inside each element, leading to a better and more flexible approximation of the geometry of the scatters and a more accurate numerical integral. We then illustrate the advantages of our finite element based Green's function integral equation method via a few concrete examples in modelling light scattering by optically large and complex scatters." @default.
- W2949813360 created "2019-06-27" @default.
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- W2949813360 date "2019-05-22" @default.
- W2949813360 modified "2023-10-16" @default.
- W2949813360 title "Finite element based Green’s function integral equation for modelling light scattering" @default.
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- W2949813360 doi "https://doi.org/10.1364/oe.27.016047" @default.
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