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Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating

Three-dimensional (3D) printing allows the fabrication of complex shapes with high resolutions. However, the printed structures typically have fixed shapes and functions. Four-dimensional printing allows the shapes of 3D-printed structures to be transformed in response to external stimuli. Among the...

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Autores principales: An, Soo-Chan, Lim, Yeonsoo, Jun, Young Chul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598202/
https://www.ncbi.nlm.nih.gov/pubmed/37875586
http://dx.doi.org/10.1038/s41598-023-45519-z
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author An, Soo-Chan
Lim, Yeonsoo
Jun, Young Chul
author_facet An, Soo-Chan
Lim, Yeonsoo
Jun, Young Chul
author_sort An, Soo-Chan
collection PubMed
description Three-dimensional (3D) printing allows the fabrication of complex shapes with high resolutions. However, the printed structures typically have fixed shapes and functions. Four-dimensional printing allows the shapes of 3D-printed structures to be transformed in response to external stimuli. Among the external stimuli, light has unique advantages for remote thermal actuation. However, light absorption in opaque structures occurs only near the sample surface; thus, actuation can be slow. Here, we propose and experimentally demonstrate the rapid and selective actuation of 3D-printed shape-memory polymer (SMP) composites using microwave heating. The SMP composite filaments are prepared using different amounts of graphite flakes. Microwave radiation can penetrate the entire printed structures and induce rapid heating. With sufficient graphite contents, the printed SMP composites are heated above their glass transition temperature within a few seconds. This leads to rapid thermal actuation of the 3D-printed SMP structures. Finally, dual-material 3D printing is demonstrated to induce selective microwave heating and control actuation motion. Our experiments and simulations indicate that microwave heating of SMP composites can be an effective method for the rapid and selective actuation of complex structures.
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spelling pubmed-105982022023-10-26 Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating An, Soo-Chan Lim, Yeonsoo Jun, Young Chul Sci Rep Article Three-dimensional (3D) printing allows the fabrication of complex shapes with high resolutions. However, the printed structures typically have fixed shapes and functions. Four-dimensional printing allows the shapes of 3D-printed structures to be transformed in response to external stimuli. Among the external stimuli, light has unique advantages for remote thermal actuation. However, light absorption in opaque structures occurs only near the sample surface; thus, actuation can be slow. Here, we propose and experimentally demonstrate the rapid and selective actuation of 3D-printed shape-memory polymer (SMP) composites using microwave heating. The SMP composite filaments are prepared using different amounts of graphite flakes. Microwave radiation can penetrate the entire printed structures and induce rapid heating. With sufficient graphite contents, the printed SMP composites are heated above their glass transition temperature within a few seconds. This leads to rapid thermal actuation of the 3D-printed SMP structures. Finally, dual-material 3D printing is demonstrated to induce selective microwave heating and control actuation motion. Our experiments and simulations indicate that microwave heating of SMP composites can be an effective method for the rapid and selective actuation of complex structures. Nature Publishing Group UK 2023-10-24 /pmc/articles/PMC10598202/ /pubmed/37875586 http://dx.doi.org/10.1038/s41598-023-45519-z Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
An, Soo-Chan
Lim, Yeonsoo
Jun, Young Chul
Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title_full Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title_fullStr Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title_full_unstemmed Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title_short Rapid and selective actuation of 3D-printed shape-memory composites via microwave heating
title_sort rapid and selective actuation of 3d-printed shape-memory composites via microwave heating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598202/
https://www.ncbi.nlm.nih.gov/pubmed/37875586
http://dx.doi.org/10.1038/s41598-023-45519-z
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