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Meng, P. (author), Pereira, S.F. (author), Dou, X. (author), Urbach, Paul (author)Improving the image quality of small particles is a classic problem and especially challenging when the distance between particles are below the optical diffraction limit. We propose a imaging system illuminated with radially polarized light combined with a suitable substrate that contains a thin dielectric layer to demonstrate that the...journal article 2020