Three-dimensional nanonetworks for giant stretchability in dielectrics and conductors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

288 Scopus Citations
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Author(s)

  • Junyong Park
  • Shuodao Wang
  • Ming Li
  • Changui Ahn
  • Jerome K. Hyun
  • Dong Seok Kim
  • Do Kyung Kim
  • John A. Rogers
  • Yonggang Huang

Detail(s)

Original languageEnglish
Article number916
Journal / PublicationNature Communications
Volume3
Online published26 Jun 2012
Publication statusPublished - 2012
Externally publishedYes

Abstract

The realization of levels of stretchability that extend beyond intrinsic limits of bulk materials is of great importance to stretchable electronics. Here we report large-area, three-dimensional nano-architectures that achieve this outcome in materials that offer both insulating and conductive properties. For the elastomer poly(dimethylsiloxane), such geometries enhance the stretchability and fracture strain by ∼62% and ∼225% over the bulk, unstructured case. The underlying physics involves local rotations of narrow structural elements in the three-dimensional network, as identified by mechanical modelling. To demonstrate the applications of three-dimensional poly(dimethylsiloxane), we create a stretchable conductor obtained by filling the interstitial regions with liquid metal. This stretchable composite shows extremely high electrical conductivity (∼24,100 S cm-1) even at strains >200%, with good cyclic properties and with current-carrying capacities that are sufficient for interconnects in light-emitting diode systems. Collectively, these concepts provide new design opportunities for stretchable electronics.

Citation Format(s)

Three-dimensional nanonetworks for giant stretchability in dielectrics and conductors. / Park, Junyong; Wang, Shuodao; Li, Ming et al.
In: Nature Communications, Vol. 3, 916, 2012.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review