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Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
JoVE Journal
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JoVE Journal Mühendislik
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

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08:02 min

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February 11, 2020

DOI:

10.3791/60403-v

DOI:
10.3791/60403-v

•

08:02 min
February 11, 2020

•

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1Water Desalination and Reuse Center (WDRC), Biological and Environmental Science and Engineering (BESE) Division,King Abdullah University of Science and Technology (KAUST), 2Core Labs,King Abdullah University of Science and Technology (KAUST)

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This work presents microfabrication protocols for achieving cavities and pillars with reentrant and doubly reentrant profiles on SiO2/Si wafers using photolithography and dry etching. Resulting microtextured surfaces demonstrate remarkable liquid repellence, characterized by robust long-term entrapment of air under wetting liquids, despite the intrinsic wettability of silica.

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Arunachalam, S., Domingues, E. M., Das, R., Nauruzbayeva, J., Buttner, U., Syed, A., Mishra, H. Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars. J. Vis. Exp. (156), e60403, doi:10.3791/60403 (2020).

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