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Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control

[Image: see text] Surfaces endowed with three-dimensional (3D) mesostructures, showing features in the nanometer to micrometer range, are critical for applications in several fields of science and technology. Finding a fabrication method that is simultaneously inexpensive, simple, fast, versatile, h...

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Autores principales: Januariyasa, I Komang, Borbone, Fabio, Salvatore, Marcella, Oscurato, Stefano L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10510105/
https://www.ncbi.nlm.nih.gov/pubmed/37646775
http://dx.doi.org/10.1021/acsami.3c09264
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author Januariyasa, I Komang
Borbone, Fabio
Salvatore, Marcella
Oscurato, Stefano L.
author_facet Januariyasa, I Komang
Borbone, Fabio
Salvatore, Marcella
Oscurato, Stefano L.
author_sort Januariyasa, I Komang
collection PubMed
description [Image: see text] Surfaces endowed with three-dimensional (3D) mesostructures, showing features in the nanometer to micrometer range, are critical for applications in several fields of science and technology. Finding a fabrication method that is simultaneously inexpensive, simple, fast, versatile, highly scalable, and capable of producing complex 3D shapes is still a challenge. Herein, we characterize the photoreconfiguration of a micropillar array of an azobenzene-containing polymer at different light wavelengths and demonstrate the tailoring of the surface geometry and its related functionality only using light. By changing the irradiated light wavelength and its polarization, we demonstrate the fabrication of various complex isotropic and anisotropic 3D mesostructures from a single original pristine geometry. Quantitative morphological analyses revealed an interplay between the decay rate of absorbed light intensity, micropillar volume preservation, and the cohesive forces between the azopolymer chains as the origin of distinctive wavelength-dependent 3D structural remorphing. Finally, we show the potentialities of this method in surface engineering by photoreshaping a single original micropillar surface into two sets of different mesostructured surfaces exhibiting tunable hydrophobicity in a wide water contact angle range. Our study opens up a new paradigm for fabricating functional 3D mesostructures in a simple, low-cost, fast, and scalable manner.
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spelling pubmed-105101052023-09-21 Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control Januariyasa, I Komang Borbone, Fabio Salvatore, Marcella Oscurato, Stefano L. ACS Appl Mater Interfaces [Image: see text] Surfaces endowed with three-dimensional (3D) mesostructures, showing features in the nanometer to micrometer range, are critical for applications in several fields of science and technology. Finding a fabrication method that is simultaneously inexpensive, simple, fast, versatile, highly scalable, and capable of producing complex 3D shapes is still a challenge. Herein, we characterize the photoreconfiguration of a micropillar array of an azobenzene-containing polymer at different light wavelengths and demonstrate the tailoring of the surface geometry and its related functionality only using light. By changing the irradiated light wavelength and its polarization, we demonstrate the fabrication of various complex isotropic and anisotropic 3D mesostructures from a single original pristine geometry. Quantitative morphological analyses revealed an interplay between the decay rate of absorbed light intensity, micropillar volume preservation, and the cohesive forces between the azopolymer chains as the origin of distinctive wavelength-dependent 3D structural remorphing. Finally, we show the potentialities of this method in surface engineering by photoreshaping a single original micropillar surface into two sets of different mesostructured surfaces exhibiting tunable hydrophobicity in a wide water contact angle range. Our study opens up a new paradigm for fabricating functional 3D mesostructures in a simple, low-cost, fast, and scalable manner. American Chemical Society 2023-08-30 /pmc/articles/PMC10510105/ /pubmed/37646775 http://dx.doi.org/10.1021/acsami.3c09264 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Januariyasa, I Komang
Borbone, Fabio
Salvatore, Marcella
Oscurato, Stefano L.
Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title_full Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title_fullStr Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title_full_unstemmed Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title_short Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control
title_sort wavelength-dependent shaping of azopolymer micropillars for three-dimensional structure control
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10510105/
https://www.ncbi.nlm.nih.gov/pubmed/37646775
http://dx.doi.org/10.1021/acsami.3c09264
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