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. 2017 May 17;8(6):2976–2989. doi: 10.1364/BOE.8.002976

Fig. 9.

Fig. 9

(a) Simulated defocus profiles of a 100 nm virus on a range of nitride films (n=2.05). (b) Optimal NI Range is achieved with a film thickness of 190 nm. (c) The field magnitudes |Escat| (top) and |Eref| (bottom) are plotted individually, with the optimal nitride thickness indicated.