Size-dependent rupture strain of elastically stretchable metal conductors

Oliver Graudejus; Zheng Jia; Teng Li; S. Wagner

doi:10.1016/j.scriptamat.2012.02.034

Size-dependent rupture strain of elastically stretchable metal conductors

Oliver Graudejus, Zheng Jia, Teng Li, S. Wagner

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Experiments show that the rupture strain of gold conductors on elastomers decreases for conductors that are long and narrow. Rupture is caused by the irreversible coalescence of microcracks into one long crack. A mechanics model identifies a critical crack length ℓ _cr above which the long crack propagates across the entire conductor width. ℓ _cr depends on the fracture toughness of the gold film and the width of the conductor. The model provides guidance for the design of highly stretchable conductors.

Original language	English (US)
Pages (from-to)	919-922
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2012.02.034
State	Published - Jun 2012

Keywords

Flexible electronics
Rupture strain
Stretchable conductors
Thin films

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2012.02.034

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title = "Size-dependent rupture strain of elastically stretchable metal conductors",

abstract = "Experiments show that the rupture strain of gold conductors on elastomers decreases for conductors that are long and narrow. Rupture is caused by the irreversible coalescence of microcracks into one long crack. A mechanics model identifies a critical crack length ℓ cr above which the long crack propagates across the entire conductor width. ℓ cr depends on the fracture toughness of the gold film and the width of the conductor. The model provides guidance for the design of highly stretchable conductors.",

keywords = "Flexible electronics, Rupture strain, Stretchable conductors, Thin films",

author = "Oliver Graudejus and Zheng Jia and Teng Li and S. Wagner",

note = "Funding Information: This research was supported by the NIH ( NINDS R21 052794 ) and the New Jersey Commission for Science and Technology, and is supported by the New Jersey Commission on Brain Injury Research. T.L. acknowledges the support of the NSF (under Grants 0856540 and 0928278 ).",

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T1 - Size-dependent rupture strain of elastically stretchable metal conductors

AU - Graudejus, Oliver

AU - Jia, Zheng

AU - Li, Teng

AU - Wagner, S.

N1 - Funding Information: This research was supported by the NIH ( NINDS R21 052794 ) and the New Jersey Commission for Science and Technology, and is supported by the New Jersey Commission on Brain Injury Research. T.L. acknowledges the support of the NSF (under Grants 0856540 and 0928278 ).

PY - 2012/6

Y1 - 2012/6

N2 - Experiments show that the rupture strain of gold conductors on elastomers decreases for conductors that are long and narrow. Rupture is caused by the irreversible coalescence of microcracks into one long crack. A mechanics model identifies a critical crack length ℓ cr above which the long crack propagates across the entire conductor width. ℓ cr depends on the fracture toughness of the gold film and the width of the conductor. The model provides guidance for the design of highly stretchable conductors.

AB - Experiments show that the rupture strain of gold conductors on elastomers decreases for conductors that are long and narrow. Rupture is caused by the irreversible coalescence of microcracks into one long crack. A mechanics model identifies a critical crack length ℓ cr above which the long crack propagates across the entire conductor width. ℓ cr depends on the fracture toughness of the gold film and the width of the conductor. The model provides guidance for the design of highly stretchable conductors.

KW - Flexible electronics

KW - Rupture strain

KW - Stretchable conductors

KW - Thin films

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Size-dependent rupture strain of elastically stretchable metal conductors

Abstract

Keywords

ASJC Scopus subject areas

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