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      Computer-generated holograms for complex surface reliefs on azopolymer films

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          Abstract

          The light-driven superficial structuration observed on the surface of films of azobenzene-containing polymers follows the optical field distribution of the illuminating light pattern, i.e. the light polarization state and the intensity distribution. The ability to precisely manipulate the illuminating intensity pattern can hence provide a new level in the range of complex light-induced superficial textures accessible onto azopolymer film surfaces. In this respect, digital holography, based on the principles of the Computer-Generated Holograms (CGHs), and actually implemented by means of a versatile liquid crystal spatial light modulator, can represent a unique experimental tool in the field of the light-induced mass migration in azo-materials. In the present work, we demonstrate the possibility to precisely control the features and the quality of complex light patterns generated through CGHs in order to induce arbitrarily complex surface reliefs onto the surface of an azopolymer. The results shown here can potentially broaden the range of possible applications of photo-responsive azopolymer films in the fields of surface engineering, biology and photonics.

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          Most cited references36

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          Photoinduced motions in azo-containing polymers.

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            Optically induced surface gratings on azoaromatic polymer films

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              Laser‐induced holographic surface relief gratings on nonlinear optical polymer films

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                Author and article information

                Contributors
                ambrosio@seas.harvard.edu
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                1 May 2019
                1 May 2019
                2019
                : 9
                : 6775
                Affiliations
                [1 ]ISNI 0000 0001 0790 385X, GRID grid.4691.a, Department of Physics “E. Pancini”, , University of Naples “Federico II”, Complesso Universitario di Monte Sant’Angelo, ; Via Cintia, 80126 Naples, Italy
                [2 ]ISNI 0000 0001 0790 385X, GRID grid.4691.a, Department of Chemical Sciences, , University of Naples “Federico II”, Complesso Universitario di Monte Sant’Angelo, ; Via Cintia, 80126 Naples, Italy
                [3 ]ISNI 000000041936754X, GRID grid.38142.3c, Center for Nanoscale Systems, , Harvard University, ; 9 Oxford Street, Cambridge, Massachusetts 02138 United States
                Author information
                http://orcid.org/0000-0002-1497-5306
                http://orcid.org/0000-0001-7433-9267
                Article
                43256
                10.1038/s41598-019-43256-w
                6494893
                31043674
                1976b302-4bd3-4b6d-94af-c6807cce0b74
                © The Author(s) 2019

                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/.

                History
                : 6 December 2018
                : 15 April 2019
                Categories
                Article
                Custom metadata
                © The Author(s) 2019

                Uncategorized
                lithography,surface patterning,polymers
                Uncategorized
                lithography, surface patterning, polymers

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