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Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics

Current metal film-based electronics, while sensitive to external stretching, typically fail via uncontrolled cracking under a relatively small strain (~30%), which restricts their practical applications. To address this, here we report a design approach inspired by the stereocilia bundles of a coch...

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Detalles Bibliográficos
Autores principales: Miao, Weining, Yao, Yuxing, Zhang, Zhiwei, Ma, Chunping, Li, Shengzhe, Tang, Jiayue, Liu, He, Liu, Zemin, Wang, Dianyu, Camburn, Michael A., Fang, Jen-Chun, Hao, Ruiran, Fang, Xinyu, Zheng, Shuang, Hu, Nan, Wang, Xiaoguang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6711965/
https://www.ncbi.nlm.nih.gov/pubmed/31455776
http://dx.doi.org/10.1038/s41467-019-11803-8
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author Miao, Weining
Yao, Yuxing
Zhang, Zhiwei
Ma, Chunping
Li, Shengzhe
Tang, Jiayue
Liu, He
Liu, Zemin
Wang, Dianyu
Camburn, Michael A.
Fang, Jen-Chun
Hao, Ruiran
Fang, Xinyu
Zheng, Shuang
Hu, Nan
Wang, Xiaoguang
author_facet Miao, Weining
Yao, Yuxing
Zhang, Zhiwei
Ma, Chunping
Li, Shengzhe
Tang, Jiayue
Liu, He
Liu, Zemin
Wang, Dianyu
Camburn, Michael A.
Fang, Jen-Chun
Hao, Ruiran
Fang, Xinyu
Zheng, Shuang
Hu, Nan
Wang, Xiaoguang
author_sort Miao, Weining
collection PubMed
description Current metal film-based electronics, while sensitive to external stretching, typically fail via uncontrolled cracking under a relatively small strain (~30%), which restricts their practical applications. To address this, here we report a design approach inspired by the stereocilia bundles of a cochlea that uses a hierarchical assembly of interfacial nanowires to retard penetrating cracking. This structured surface outperforms its flat counterparts in stretchability (130% versus 30% tolerable strain) and maintains high sensitivity (minimum detection of 0.005% strain) in response to external stimuli such as sounds and mechanical forces. The enlarged stretchability is attributed to the two-stage cracking process induced by the synergy of micro-voids and nano-voids. In-situ observation confirms that at low strains micro-voids between nanowire clusters guide the process of crack growth, whereas at large strains new cracks are randomly initiated from nano-voids among individual nanowires.
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spelling pubmed-67119652019-08-29 Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics Miao, Weining Yao, Yuxing Zhang, Zhiwei Ma, Chunping Li, Shengzhe Tang, Jiayue Liu, He Liu, Zemin Wang, Dianyu Camburn, Michael A. Fang, Jen-Chun Hao, Ruiran Fang, Xinyu Zheng, Shuang Hu, Nan Wang, Xiaoguang Nat Commun Article Current metal film-based electronics, while sensitive to external stretching, typically fail via uncontrolled cracking under a relatively small strain (~30%), which restricts their practical applications. To address this, here we report a design approach inspired by the stereocilia bundles of a cochlea that uses a hierarchical assembly of interfacial nanowires to retard penetrating cracking. This structured surface outperforms its flat counterparts in stretchability (130% versus 30% tolerable strain) and maintains high sensitivity (minimum detection of 0.005% strain) in response to external stimuli such as sounds and mechanical forces. The enlarged stretchability is attributed to the two-stage cracking process induced by the synergy of micro-voids and nano-voids. In-situ observation confirms that at low strains micro-voids between nanowire clusters guide the process of crack growth, whereas at large strains new cracks are randomly initiated from nano-voids among individual nanowires. Nature Publishing Group UK 2019-08-27 /pmc/articles/PMC6711965/ /pubmed/31455776 http://dx.doi.org/10.1038/s41467-019-11803-8 Text en © 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/.
spellingShingle Article
Miao, Weining
Yao, Yuxing
Zhang, Zhiwei
Ma, Chunping
Li, Shengzhe
Tang, Jiayue
Liu, He
Liu, Zemin
Wang, Dianyu
Camburn, Michael A.
Fang, Jen-Chun
Hao, Ruiran
Fang, Xinyu
Zheng, Shuang
Hu, Nan
Wang, Xiaoguang
Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title_full Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title_fullStr Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title_full_unstemmed Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title_short Micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
title_sort micro-/nano-voids guided two-stage film cracking on bioinspired assemblies for high-performance electronics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6711965/
https://www.ncbi.nlm.nih.gov/pubmed/31455776
http://dx.doi.org/10.1038/s41467-019-11803-8
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