Selective photonic sintering of Ag flakes embedded in silicone elastomers to fabricate stretchable conductors

Youngsu Oh, In Seon Yoon, Chihak Lee, Sun Hong Kim, Byeong Kwon Ju, Jae Min Hong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Stretchable conductors have recently attracted much attention because of rapid developments in wearable and deformable electronics. Conductors are one of the essential components of electronic devices. A photonic sintering process with intense pulsed light from a xenon lamp is used for sintering printed ink to fabricate conductors, without damaging the substrate. However, it is difficult to achieve the most desired properties such as high conductivity and mechanical stretchability in stretchable conductors fabricated by photonic sintering. Here, highly stretchable conductors are developed by the selective sintering of conductive materials embedded in silicone elastomers, overcoming this drawback. The conductors are composed of conductive Ag flakes and elastomeric Ecoflex. Photonic sintering generates conductive paths without damaging the transparent elastomer. As a result, a stretchability of 500% is achieved without the need for any structural designs. Furthermore, a wireless power transfer circuit incorporating the conductors was successfully applied to operate a light emitting diode wirelessly. This approach opens up the possibility of developing new types of stretchable and deformable electronics for future applications.

Original languageEnglish
Pages (from-to)11733-11740
Number of pages8
JournalJournal of Materials Chemistry C
Volume5
Issue number45
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Silicone Elastomers
Elastomers
Silicones
Photonics
Sintering
Electronic equipment
Conductive materials
Xenon
Electric lamps
Structural design
Ink
Light emitting diodes
Networks (circuits)
Substrates

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this

Selective photonic sintering of Ag flakes embedded in silicone elastomers to fabricate stretchable conductors. / Oh, Youngsu; Yoon, In Seon; Lee, Chihak; Kim, Sun Hong; Ju, Byeong Kwon; Hong, Jae Min.

In: Journal of Materials Chemistry C, Vol. 5, No. 45, 01.01.2017, p. 11733-11740.

Research output: Contribution to journalArticle

Oh, Youngsu ; Yoon, In Seon ; Lee, Chihak ; Kim, Sun Hong ; Ju, Byeong Kwon ; Hong, Jae Min. / Selective photonic sintering of Ag flakes embedded in silicone elastomers to fabricate stretchable conductors. In: Journal of Materials Chemistry C. 2017 ; Vol. 5, No. 45. pp. 11733-11740.
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