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Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices

Nanomechanical characteristics of standalone silver nanowires (Ag NWs) are a key issue for providing a failure criterion of advanced flexible electrodes that are trending towards smaller radius of curvatures (ROCs). Through in-situ tensile and buckling tests of pentagonal Ag NWs, we demonstrated tha...

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Autores principales: Kim, Donggyun, Kim, Sung-Hoon, Kim, Jong Hak, Lee, Jae-Chul, Ahn, Jae-Pyoung, Kim, Sang Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5381103/
https://www.ncbi.nlm.nih.gov/pubmed/28378763
http://dx.doi.org/10.1038/srep45903
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author Kim, Donggyun
Kim, Sung-Hoon
Kim, Jong Hak
Lee, Jae-Chul
Ahn, Jae-Pyoung
Kim, Sang Woo
author_facet Kim, Donggyun
Kim, Sung-Hoon
Kim, Jong Hak
Lee, Jae-Chul
Ahn, Jae-Pyoung
Kim, Sang Woo
author_sort Kim, Donggyun
collection PubMed
description Nanomechanical characteristics of standalone silver nanowires (Ag NWs) are a key issue for providing a failure criterion of advanced flexible electrodes that are trending towards smaller radius of curvatures (ROCs). Through in-situ tensile and buckling tests of pentagonal Ag NWs, we demonstrated that the intrinsic fracture strain provides a significant criterion to predict the mechanical and electrical failure of Ag NW electrodes under various strain modes, because the decrease in fracture strain limits figure of merit of flexible devices. The Ag NW electrodes on a polymer substrate exhibited a strain-dependent electrical failure owing to the unique deformation characteristics with a size-dependent brittle-to-ductile transition of the five-fold twinned Ag NWs. All the Ag NWs greater than approximately 40 nm in diameter exhibited brittle fracture with a size-independent stress-strain response under tensile and buckling modes, which leads to the electrical failure of flexible electrodes at the almost same threshold ROC. Meanwhile, the higher ductility of Ag NWs less than 40 nm in diameter resulted in much smaller threshold ROCs of the electrodes due to the highly extended fracture strains, which can afford a high degree of freedom for highly flexible devices.
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spelling pubmed-53811032017-04-10 Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices Kim, Donggyun Kim, Sung-Hoon Kim, Jong Hak Lee, Jae-Chul Ahn, Jae-Pyoung Kim, Sang Woo Sci Rep Article Nanomechanical characteristics of standalone silver nanowires (Ag NWs) are a key issue for providing a failure criterion of advanced flexible electrodes that are trending towards smaller radius of curvatures (ROCs). Through in-situ tensile and buckling tests of pentagonal Ag NWs, we demonstrated that the intrinsic fracture strain provides a significant criterion to predict the mechanical and electrical failure of Ag NW electrodes under various strain modes, because the decrease in fracture strain limits figure of merit of flexible devices. The Ag NW electrodes on a polymer substrate exhibited a strain-dependent electrical failure owing to the unique deformation characteristics with a size-dependent brittle-to-ductile transition of the five-fold twinned Ag NWs. All the Ag NWs greater than approximately 40 nm in diameter exhibited brittle fracture with a size-independent stress-strain response under tensile and buckling modes, which leads to the electrical failure of flexible electrodes at the almost same threshold ROC. Meanwhile, the higher ductility of Ag NWs less than 40 nm in diameter resulted in much smaller threshold ROCs of the electrodes due to the highly extended fracture strains, which can afford a high degree of freedom for highly flexible devices. Nature Publishing Group 2017-04-05 /pmc/articles/PMC5381103/ /pubmed/28378763 http://dx.doi.org/10.1038/srep45903 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Kim, Donggyun
Kim, Sung-Hoon
Kim, Jong Hak
Lee, Jae-Chul
Ahn, Jae-Pyoung
Kim, Sang Woo
Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title_full Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title_fullStr Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title_full_unstemmed Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title_short Failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
title_sort failure criterion of silver nanowire electrodes on a polymer substrate for highly flexible devices
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5381103/
https://www.ncbi.nlm.nih.gov/pubmed/28378763
http://dx.doi.org/10.1038/srep45903
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