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. 2016 Feb;472(2186):20150658. doi: 10.1098/rspa.2015.0658

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© 2016 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 12. — A plane wave is incident at ψ=π/4 on a lattice of 2000 gratings with d_x=1.0, d_y=1.0 for β=4.40, κ_y=3.1113. (a) Modulus of the coefficients |A_k| for both Wiener–Hopf (dots) with δ=0.005 and Foldy (solid line). The first 50 are shown. (b) Real part of the total displacement field. (Online version in colour.)