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Issue 10, 2011
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Hydrophobic polymer surfaces by lotus leaf replication using an alternating current electric field with an interdigitated electrode

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Abstract

We fabricated a hydrophobic surface of polycaprolactone (PCL) and dynamic hydrophobic surface of poly(ethylene oxide) (PEO), which is an inherently hydrophilic material, by varying the surface pattern that is replicated with the lotus leaf. To improve the replication efficiency, we applied an electric field-aided technique, supplemented with an interdigitated electrode. Electrostriction occurred due to the electric field applied to the liquid silicone, and the interdigitated electrode showed high-flow movement for liquid silicone relative to the parallel plate electrode. The PCL and PEO surfaces replicated with an electric field showed fine surface roughness and microscale protrusions compared with PCL and PEO surface fabricated without an applied electric field (no-field method). The water contact angles of the PCL and PEO surfaces fabricated with an electric field were higher than those of the no-field casting method. Thus, we conclude that the field-induced casting technique is a good supplement for the general casting method.

Graphical abstract: Hydrophobic polymer surfaces by lotus leaf replication using an alternating current electric field with an interdigitated electrode

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Publication details

The article was received on 29 Nov 2010, accepted on 07 Mar 2011 and first published on 07 Apr 2011


Article type: Paper
DOI: 10.1039/C0SM01388A
Citation: Soft Matter, 2011,7, 4723-4728
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    Hydrophobic polymer surfaces by lotus leaf replication using an alternating current electric field with an interdigitated electrode

    G. Jin, H. Jeon and G. Kim, Soft Matter, 2011, 7, 4723
    DOI: 10.1039/C0SM01388A

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