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Fabrication of flexible superhydrophobic films by lift-up soft-lithography and decoration with Ag nanoparticles

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Academic year: 2021

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Figure 1 outlines our procedures for the preparation of a superhydrophobic film, which begins with the assembly of monodisperse silica spheres on the surface of a silicon wafer by the evaporation of a suspension of silica spheres in ethanol (figure 1(a)) [
Table 1. Water CAs before and after hydrophobic modification of PDMS surfaces at different steps of the fabrication process.
Figure 6 shows the SEM images of our four raspberry-like surfaces with different silica spheres, whose average diameters are 650 (figure 6(a)), 700 (figure 6(b)), 850 (figure 6(c)) and 1100 nm (figure 6(d)), respectively
Figure 6. SEM images of the silica arrays on PDMS films; the diameter of the silica spheres is (a) 650 nm; (b) 700 nm; (c) 850 nm and (d) 1100 nm

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