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Reversible wettability of electron-beam deposited indium-tin-oxide driven by ns-UV irradiation
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10.1063/1.3701590
/content/aip/journal/apl/100/15/10.1063/1.3701590
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/15/10.1063/1.3701590
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Behaviour of the static contact angle (full dots, left vertical scale) vs ns UV-irradiation fluence (irradiation time = 30 s). Right scale: corresponding Φ (full squares) and r (empty dots) parameters according to the modified Wenzel model. The dashed lines superimposed to data are guides for the eye. The horizontal dash-dotted line indicates the maximum, unity theoretical value of Φ. Data at the right of the vertical dash-dotted line can not be described by the model. Insets: photographs of water drops on as-deposited (top inset) and UV-irradiated (at 25 mJ/cm2, bottom inset) ITO surfaces.

Image of FIG. 2.
FIG. 2.

(a) Transmittance spectra of as-deposited ITO films (dashed line) and after irradiation (open dots) at 10 mJ/cm2 for 30 s. Top (b) and cross-sectional (c) SEM images of as-deposited ITO films. Scale bars = 200 nm. AFM micrographs of as-deposited ITO films (d) and after irradiation (e) at 10 mJ/cm2 for 30 s.

Image of FIG. 3.
FIG. 3.

(a) Static contact angle vs ns UV-irradiation time (full dots, left vertical scale), at an exposure fluence of 10 mJ/cm2. Right scale: corresponding Φ (full square) and r (empty dots) parameters according to the modified Wenzel model. Dashed and dotted lines superimposed to data are guides for the eye. The continuous line for times ≥ 30 s is the exponential fit to experimental data, according a forward hydrophilic reaction rate model. Dash-dotted lines as in Fig. 1. Inset: schematics of the partial penetration of the liquid within the recessed features of the surface. (b), (c) Photographs of water drops residing on the initial (a) and UV-irradiated (b) ITO surfaces. Irradiation time = 60 s.

Image of FIG. 4.
FIG. 4.

Contact angle cycles. Each cycle includes irradiation at 10 mJ/cm2 for 30 s and one night of storage in dark.

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/content/aip/journal/apl/100/15/10.1063/1.3701590
2012-04-12
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reversible wettability of electron-beam deposited indium-tin-oxide driven by ns-UV irradiation
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/15/10.1063/1.3701590
10.1063/1.3701590
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