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May 11, 2026Langmuir

Electrodewetting of Surfactant-Laden Drops on Silicon Oxide: Molecular Insights from Sum-Frequency Generation Spectroscopy

Billura Shakhayeva Bas ter Beest Frieder Mugele Björn Braunschweig

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Key Points

This research aims to investigate the role of surfactants in electrodewetting (EDeW) processes on silicon oxide surfaces.
Utilized sum-frequency generation spectroscopy to analyze molecular changes during electrodewetting.
Focused on the behavior of surfactant-laden drops in relation to the contact line and solid-vapor interface.
No significant changes were found in SFG spectra away from the contact line.
Near the contact line, thicker DTAB-rich layers formed, indicating a hemimicellar structure.
Increased contact angles were observed, demonstrating enhanced hydrophobicity due to surfactant organization.

Implication

Explores surfactant behavior affecting contact angles on silicon oxide, suggesting mechanisms for industrial applications.

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Cite This Study

Shakhayeva et al. (2026) studied this question.

synapsesocial.com/papers/6a0565f4a550a87e60a1e104 https://doi.org/10.1021/acs.langmuir.6c01764

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