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. 2018 Apr 24;9:1632. doi: 10.1038/s41467-018-04103-0

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — Experimental verification of multi-plane acoustic hologram. a The predesigned image of a multi-plane acoustic hologram (letters “N,” “J,” and “U” at different distances of 12, 16, and 20 cm). b Amplitude and phase profiles on the hologram plane for projecting the “N,” “J,” “U” images at multiple planes. c The photograph of the 3D printed LAM sample. d, e The simulated holographic images by the APM method and the corresponding experimentally measured results. The correlations are marked in the figure. The correlation between the resulting image and the predesigned image is appended below each sub-figure. Scale bar, 10 cm. Rights for use of the NJU font images in this figure are from Adobe Font Software License: https://www.fontspring.com/lic/ztxtzqqpzi. All rights reserved