Femtosecond-Laser-Produced Underwater “Superpolymphobic” Nanorippled Surfaces: Repelling Liquid Polymers in Water for Applications of Controlling Polymer Shape and Adhesion Article Swipe

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Jiale Yong , Subhash C. Singh , Zhibing Zhan , Mohamed EIKabbash , Feng Chen , Chunlei Guo ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.1021/acsanm.9b01869

A femtosecond (fs)-laser-processed surface that repels liquid polymer in water is reported in this paper. We define this phenomenon as the "superpolymphobicity". Three-level microstructures (including microgrooves, micromountains/microholes between the microgrooves, and nanoripples on the whole surface) were directly created on the stainless steel surface via fs laser processing. A liquid polydimethylsiloxane (PDMS) droplet on the textured surface had the contact angle of 156 ± 3° and contact angle hysteresis less than 4° in water, indicating excellent underwater superpolymphobicity of the fs-laser-induced hierarchical microstructures. The contact between the resultant superhydrophilic hierarchical microstructures and the submerged liquid PDMS droplet is verified at the underwater Cassie state. The underwater superpolymphobicity enables to design the shape of cured PDMS and selectively avoid the adhesion at the PDMS/substrate interface, different from the previously reported superwettabilities. As the examples, the microlens array and microfluidics system were prepared based on the laser-induced underwater superpolymphobic microstructures.

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Polydimethylsiloxane Materials science Contact angle Microlens Microstructure Polymer Femtosecond Adhesion Laser Underwater Superhydrophilicity Wetting Substrate (aquarium) Optics Composite material Nanotechnology Lens (geology) Oceanography Geology Physics

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Type: article
Language: en
Landing Page: https://doi.org/10.1021/acsanm.9b01869
PDF: https://pubs.acs.org/doi/pdf/10.1021/acsanm.9b01869
OA Status: hybrid
Cited By: 28
References: 58
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DOI: https://doi.org/10.1021/acsanm.9b01869

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Title: Femtosecond-Laser-Produced Underwater “Superpolymphobic” Nanorippled Surfaces: Repelling Liquid Polymers in Water for Applications of Controlling Polymer Shape and Adhesion

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Language: en

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Publication year: 2019

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Publication date: 2019-10-25

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Authors: Jiale Yong, Subhash C. Singh, Zhibing Zhan, Mohamed EIKabbash, Feng Chen, Chunlei Guo

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Landing page: https://doi.org/10.1021/acsanm.9b01869

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Concepts: Polydimethylsiloxane, Materials science, Contact angle, Microlens, Microstructure, Polymer, Femtosecond, Adhesion, Laser, Underwater, Superhydrophilicity, Wetting, Substrate (aquarium), Optics, Composite material, Nanotechnology, Lens (geology), Oceanography, Geology, Physics

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Cited by: 28

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