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

Weining Miao, Yuxing Yao, Zhiwei Zhang, Chunping Ma, Shengzhe Li, Jiayue Tang, He Liu, Zemin Liu, Dianyu Wang, Michael A. Camburn, Jen-Chun Fang, Ruiran Hao, Xinyu Fang, Shuang Zheng (), Nan Hu and Xiaoguang Wang
Additional contact information
Weining Miao: Chinese Academy of Sciences
Yuxing Yao: Harvard University
Zhiwei Zhang: The Ohio State University
Chunping Ma: The Ohio State University
Shengzhe Li: Imperial College London
Jiayue Tang: Institute of Chemistry, Chinese Academy of Sciences
He Liu: University of Chinese Academy of Sciences
Zemin Liu: University of Chinese Academy of Sciences
Dianyu Wang: Jilin University
Michael A. Camburn: The Ohio State University
Jen-Chun Fang: The Ohio State University
Ruiran Hao: Institute of Chemistry, Chinese Academy of Sciences
Xinyu Fang: The Ohio State University
Shuang Zheng: Institute of Chemistry, Chinese Academy of Sciences
Nan Hu: The Ohio State University
Xiaoguang Wang: The Ohio State University

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract 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.

Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-019-11803-8 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11803-8

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-11803-8

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().