Fabrication of transparent super-hydrophobic surface on thermoplastic polymer for mass production
오 치 빈
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Superhydrophobic surface has unique characteristics such as water repellence and self-cleaning, and especially transparent superhydrophobic surfaces have wide applications for self-cleaned solar cells, protective optics, and building windows. In this dissertation, a UV nanosecond pulsed laser was utilized for fabrication of the surface textured Aluminum (Al) mold. The surface texture design was grid pattern after comparison for fabricating time between hole-array and grid pattern array. Then polymer casting method was used. Comparison for fabricating time between polydimethylsiloxane (PDMS) polymer casting and thermoplastic polymer was carried out. As a result, the replica of thermoplastic polymer was chosen and fabricated using compression molding for mass production. Water droplet contact angle (WDCA) and transmittance were measured to investigate superhydrophobic and transparent properties. By controlling pattern size, the transparent superhydrophobic surface was fabricated, and the effect of pattern size was studied with wetting states.