Size-dependent rupture strain of elastically stretchable metal conductors

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

Research output: Contribution to journalArticle

21 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)919-922
Number of pages4
JournalScripta Materialia
Volume66
Issue number11
DOIs
StatePublished - Jun 1 2012

Fingerprint

conductors
Metals
Cracks
Gold
metals
cracks
Elastomers
Microcracks
Coalescence
Fracture toughness
gold
Mechanics
microcracks
elastomers
fracture strength
coalescing
Experiments

Keywords

  • Flexible electronics
  • Rupture strain
  • Stretchable conductors
  • Thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Size-dependent rupture strain of elastically stretchable metal conductors. / Graudejus, Oliver; Jia, Zheng; Li, Teng; Wagner, S.

In: Scripta Materialia, Vol. 66, No. 11, 01.06.2012, p. 919-922.

Research output: Contribution to journalArticle

Graudejus, Oliver ; Jia, Zheng ; Li, Teng ; Wagner, S. / Size-dependent rupture strain of elastically stretchable metal conductors. In: Scripta Materialia. 2012 ; Vol. 66, No. 11. pp. 919-922.
@article{9deaef7ec7e14394bc9c0145d4780c3d,
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",
year = "2012",
month = "6",
day = "1",
doi = "10.1016/j.scriptamat.2012.02.034",
language = "English (US)",
volume = "66",
pages = "919--922",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
number = "11",

}

TY - JOUR

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

AU - Graudejus, Oliver

AU - Jia, Zheng

AU - Li, Teng

AU - Wagner, S.

PY - 2012/6/1

Y1 - 2012/6/1

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

UR - http://www.scopus.com/inward/record.url?scp=84862797784&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862797784&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2012.02.034

DO - 10.1016/j.scriptamat.2012.02.034

M3 - Article

AN - SCOPUS:84862797784

VL - 66

SP - 919

EP - 922

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

IS - 11

ER -