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Open AccessFeature PaperArticle

Shear-Assisted Laser Transfer of Metal Nanoparticle Ink to an Elastomer Substrate

1
Optical Nanoprocessing Lab, Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Korea
2
Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
3
Surface Technology Group, Korea Institute of Industrial Technology, 156 Gaetbeol-ro, Yeonsu-gu, Incheon 21999, Korea
4
Department of Mechanical Engineering, Ajou University, San 5, Woncheon-Dong, Yeongtong-Gu, Suwon 16499, Korea
5
Institute of Advanced Machinery and Design (SNU-IAMD), Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(12), 2511; https://doi.org/10.3390/ma11122511
Received: 2 November 2018 / Revised: 1 December 2018 / Accepted: 6 December 2018 / Published: 11 December 2018
(This article belongs to the Special Issue Advanced/Alternative Transparent Conducting Oxides)
Selective laser sintering of metal nanoparticle ink is an attractive technology for the creation of metal layers at the microscale without any vacuum deposition process, yet its application to elastomer substrates has remained a highly challenging task. To address this issue, we introduced the shear-assisted laser transfer of metal nanoparticle ink by utilizing the difference in thermal expansion coefficients between the elastomer and the target metal electrode. The laser was focused and scanned across the absorbing metal nanoparticle ink layer that was in conformal contact with the elastomer with a high thermal expansion coefficient. The resultant shear stress at the interface assists the selective transfer of the sintered metal nanoparticle layer. We expect that the proposed method can be a competent fabrication route for a transparent conductor on elastomer substrates. View Full-Text
Keywords: laser transfer; metal nanoparticle ink; stretchable electronics laser transfer; metal nanoparticle ink; stretchable electronics
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Shin, W.; Lim, J.; Lee, Y.; Park, S.; Kim, H.; Cho, H.; Shin, J.; Yoon, Y.; Lee, H.; Kim, H.-J.; Han, S.; Ko, S.H.; Hong, S. Shear-Assisted Laser Transfer of Metal Nanoparticle Ink to an Elastomer Substrate. Materials 2018, 11, 2511.

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