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Design of artificial lotus leaves using nonwoven fabric

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Abstract

The apparent contact angles of a droplet deposited on the surfaces of thermal-bonded nonwoven fabrics were presented, and the characteristics required for a superhydrophobic surface were described. For a nonwoven superhydrophobic surface, the Cassie–Baxter model describes the wetting of rough surfaces. Using topological and chemical surface modifications of nylon 6,6 nonwoven fabric, artificial Lotus leaves having water contact angles >150° were prepared. Good agreement between the predictions based on the original Cassie–Baxter model and experiments was obtained. The angle at which a water droplet rolls off the surface has also been used to define a superhydrophobic surface. Superhydrophobic surfaces were prepared by two criteria: a low-surface energy and a properly designed surface roughness.

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Acknowledgement

I appreciate the support by US Army Natick Soldier Research Development and Engineering Center (NSRDEC), Air Force Research Lab (AFRL), and Defense Threat Reduction Agency (DTRA).

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Authors and Affiliations

  1. College of Textiles, North Carolina State University, 2401 Research Drive, Raleigh, NC, 27695-8301, USA

    Hoon Joo Lee

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  1. Hoon Joo Lee
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Correspondence to Hoon Joo Lee.

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Lee, H.J. Design of artificial lotus leaves using nonwoven fabric. J Mater Sci 44, 4645–4652 (2009). https://doi.org/10.1007/s10853-009-3711-5

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  • DOI: https://doi.org/10.1007/s10853-009-3711-5

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