Facile patterning of Ag nanowires network by micro-contact printing of siloxane

Sung Soo Yoon, Dahl Young Khang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A simple, low-cost, scalable patterning method has been demonstrated for chemically welded Ag nanowires (AgNWs) network. The chemically welded network of AgNWs on substrates has been patterned by modified microcontact printing (μCP). As an ink for the μCP, uncured high-viscosity siloxane polymer has been applied. Using elastomeric polydimethylsiloxane (PDMS) stamp that has been replicated from micromachined Si master mold by metal-assisted chemical etching, the printed siloxane ink materials have been cured by simple UV/ozone exposure for 3 min, which acts as an etch barrier in ensuing wet-removal of exposed AgNWs network. The proposed patterning technique has no limitation in the choice of substrates and pattern shape, in addition to high resolution. The patterned AgNWs network electrodes have shown excellent optical, electrical, and mechanical performances, such as high flexibility (up to ∼10%) and stretchability (up to 40%). Finally, the patterned AgNWs network electrodes have been applied as a transparent heater, which can be used for rapid raindrop removal or deicing of car windows and outside mirrors. This can be a valuable help for driving safety under harsh weather conditions.

Original languageEnglish
Pages (from-to)23236-23243
Number of pages8
JournalACS Applied Materials and Interfaces
Volume8
Issue number35
DOIs
Publication statusPublished - 2016 Sep 7

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Siloxanes
Nanowires
Printing
Ink
Snow and ice removal
Electrodes
Ozone
Substrates
Polydimethylsiloxane
Etching
Polymers
Railroad cars
Metals
Viscosity
Costs

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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title = "Facile patterning of Ag nanowires network by micro-contact printing of siloxane",
abstract = "A simple, low-cost, scalable patterning method has been demonstrated for chemically welded Ag nanowires (AgNWs) network. The chemically welded network of AgNWs on substrates has been patterned by modified microcontact printing (μCP). As an ink for the μCP, uncured high-viscosity siloxane polymer has been applied. Using elastomeric polydimethylsiloxane (PDMS) stamp that has been replicated from micromachined Si master mold by metal-assisted chemical etching, the printed siloxane ink materials have been cured by simple UV/ozone exposure for 3 min, which acts as an etch barrier in ensuing wet-removal of exposed AgNWs network. The proposed patterning technique has no limitation in the choice of substrates and pattern shape, in addition to high resolution. The patterned AgNWs network electrodes have shown excellent optical, electrical, and mechanical performances, such as high flexibility (up to ∼10{\%}) and stretchability (up to 40{\%}). Finally, the patterned AgNWs network electrodes have been applied as a transparent heater, which can be used for rapid raindrop removal or deicing of car windows and outside mirrors. This can be a valuable help for driving safety under harsh weather conditions.",
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Facile patterning of Ag nanowires network by micro-contact printing of siloxane. / Yoon, Sung Soo; Khang, Dahl Young.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 35, 07.09.2016, p. 23236-23243.

Research output: Contribution to journalArticle

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