Ultralow hysteresis superhydrophobic surfaces by excimer laser modification of SU-8 |
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Authors: | Wagterveld R Martijn Berendsen Christian W J Bouaidat Salim Jonsmann Jacques |
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Institution: | Scandinavian Micro Biodevices ApS, Gammelg?rdsvej 87C, DK-3520 Farum, Denmark. |
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Abstract: | We present a new and simple method to produce superhydrophobic surfaces with ultralow hysteresis. The method involves surface modification of SU-8 using an excimer laser treatment. The modified surface is coated with a hydrophobic plasma-polymerized hexafluoropropene layer. The advancing and receding water contact angles were measured to be approximately 165 degrees . The achieved water contact angle hysteresis was below the measurement limit. This low hysteresis can be ascribed to nanoscale debris generated during the excimer laser process. |
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