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Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control
An active surface with an on-demand tunable topography holds great potential for various applications, such as reconfigurable metasurfaces, adaptive microlenses, soft robots and four-dimensional (4D) printing. Despite extensive progress, to achieve refined control of microscale surface structures wi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7694221/ https://www.ncbi.nlm.nih.gov/pubmed/33158095 http://dx.doi.org/10.3390/mi11110992 |
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author | Wang, Jian-Nan Bai, Benfeng Chen, Qi-Dai Sun, Hong-Bo |
author_facet | Wang, Jian-Nan Bai, Benfeng Chen, Qi-Dai Sun, Hong-Bo |
author_sort | Wang, Jian-Nan |
collection | PubMed |
description | An active surface with an on-demand tunable topography holds great potential for various applications, such as reconfigurable metasurfaces, adaptive microlenses, soft robots and four-dimensional (4D) printing. Despite extensive progress, to achieve refined control of microscale surface structures with large-amplitude deformation remains a challenge. Moreover, driven by the demand of constructing a large area of microstructures with increased complexity—for instance, biomimetic functional textures bearing a three-dimensional (3D) gradient—novel strategies are highly desired. Here, we develop an active surface with a dynamic topography and three-tier height gradient via a strain-tunable mismatching-bonding process. Pneumatic actuation allows for rapid, reversible and uniform regulation of surface microstructures at the centimeter scale. The in-situ modulation facilitates large-amplitude deformation with a maximum tuning range of 185 μm. Moreover, the structural gradient can be modulated by programming the strain value of the bonding process. With our strategy, another two types of surfaces with a four-tier gradient and without gradient were also prepared. By providing active modulation and design flexibility of complicated microstructures, the proposed strategy would unlock more opportunities for a wealth of novel utilizations. |
format | Online Article Text |
id | pubmed-7694221 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76942212020-11-28 Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control Wang, Jian-Nan Bai, Benfeng Chen, Qi-Dai Sun, Hong-Bo Micromachines (Basel) Article An active surface with an on-demand tunable topography holds great potential for various applications, such as reconfigurable metasurfaces, adaptive microlenses, soft robots and four-dimensional (4D) printing. Despite extensive progress, to achieve refined control of microscale surface structures with large-amplitude deformation remains a challenge. Moreover, driven by the demand of constructing a large area of microstructures with increased complexity—for instance, biomimetic functional textures bearing a three-dimensional (3D) gradient—novel strategies are highly desired. Here, we develop an active surface with a dynamic topography and three-tier height gradient via a strain-tunable mismatching-bonding process. Pneumatic actuation allows for rapid, reversible and uniform regulation of surface microstructures at the centimeter scale. The in-situ modulation facilitates large-amplitude deformation with a maximum tuning range of 185 μm. Moreover, the structural gradient can be modulated by programming the strain value of the bonding process. With our strategy, another two types of surfaces with a four-tier gradient and without gradient were also prepared. By providing active modulation and design flexibility of complicated microstructures, the proposed strategy would unlock more opportunities for a wealth of novel utilizations. MDPI 2020-11-04 /pmc/articles/PMC7694221/ /pubmed/33158095 http://dx.doi.org/10.3390/mi11110992 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Jian-Nan Bai, Benfeng Chen, Qi-Dai Sun, Hong-Bo Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title | Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title_full | Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title_fullStr | Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title_full_unstemmed | Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title_short | Active Surface with Dynamic Microstructures and Hierarchical Gradient Enabled by in situ Pneumatic Control |
title_sort | active surface with dynamic microstructures and hierarchical gradient enabled by in situ pneumatic control |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7694221/ https://www.ncbi.nlm.nih.gov/pubmed/33158095 http://dx.doi.org/10.3390/mi11110992 |
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