The cda package implements the coupled-dipole
        approximation for electromagnetic scattering by sparse
        collections of subwavelength particles, with a particular focus
        on plasmonic nanoparticles in the visible regime. The
        interaction matrix, and the solution of the linear system of
        coupled-dipole equations are executed in C++ code for speed;
        convenient wrapper functions are provided at the R level to
        generate the particle clusters, calculate the extinction,
        scattering, and absorption of light by particles with linearly
        and circularly polarised light. Functions are also provided to
        calculate orientation-averaged circular dichroism, and display
        clusters of nanoparticles in three dimensions using OpenGL or
        povray.

La: La

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