Enhancing the electrical conductivity of stretchable silicone composite textiles using ethanol solvent treatment

Kim, Jin-Wook; Shin, Gyu Jin; Kim, Do Hyun; Kim, Sang Hee; Lee, Jun Hyup

doi:10.1007/s11814-023-1394-2

Korean J. Chem. Eng.

2023

DOI: 10.1007/s11814-023-1394-2

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Enhancing the electrical conductivity of stretchable silicone composite textiles using ethanol solvent treatment

Jin-Wook Kim

Gyu Jin Shin

Do Hyun Kim

et al.

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2024

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Facile Formation of Metallic Surface with Microroughness via Spray-Coating of Copper Nanoparticles for Enhanced Liquid Metal Wetting

Kim,

So,

Koo

2024

Materials

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This paper presents a simple, fast, and cost-effective method for creating metallic microstructured surfaces by spray-coating a dispersion of copper nanoparticles (CuNPs) onto polymethyl methacrylate (PMMA) substrates, enabling the imbibition-induced wetting of liquid metal. The formation of these microstructured patterns is crucial for the spontaneous wetting of gallium-based liquid metals. Traditional techniques for producing such microstructures often involve complex and costly lithography and vacuum deposition methods. In contrast, this study demonstrates that liquid metal wetting can occur with metal microstructures formed through a straightforward spray-coating process. To immobilize the CuNPs on the polymer substrate, an organic solvent that dissolves the polymer surface was employed as the dispersion medium. The effects of various spray-coating parameters, including distance and time, on the uniformity and immobilization of CuNP films were systematically investigated. Under optimal conditions (120 s of spray time and 10 cm spray distance), CuNPs dispersed in dichloromethane (DCM) yielded uniform and stable microstructured surfaces. The spontaneous wetting of gallium-based liquid metal was observed on the fabricated CuNP film. Additionally, liquid metal selectively wet the CuNP patterns formed by stencil techniques, establishing electrical connections between electrodes. These findings underscore the potential of spray-coating for fabricating metallic surfaces to drive the formation of liquid metal patterns in flexible electronics applications.

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Facile Formation of Metallic Surface with Microroughness via Spray-Coating of Copper Nanoparticles for Enhanced Liquid Metal Wetting

Kim,

So,

Koo

2024

Materials

View full text Add to dashboard Cite

show abstract

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Enhancing the electrical conductivity of stretchable silicone composite textiles using ethanol solvent treatment

Cited by 1 publication

References 25 publications

Facile Formation of Metallic Surface with Microroughness via Spray-Coating of Copper Nanoparticles for Enhanced Liquid Metal Wetting

Facile Formation of Metallic Surface with Microroughness via Spray-Coating of Copper Nanoparticles for Enhanced Liquid Metal Wetting

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