Wettability and "petal effect" of GaAs native oxides

A. Gocalinska; K. Gradkowski; V. Dimastrodonato; L. O. Mereni; G. Juska; G. Huyet; E. Pelucchi

doi:10.1063/1.3619797

Wettability and "petal effect" of GaAs native oxides

A. Gocalinska
, K. Gradkowski
, V. Dimastrodonato
, L. O. Mereni
, G. Juska
, G. Huyet
, E. Pelucchi

Research output: Contribution to journal › Article › peer-review

Abstract

We discuss unreported transitions of oxidized GaAs surfaces between (super)hydrophilic and hydrophobic states when stored in ambient conditions. Contact angles higher than 90 and high adhesive force were observed for several air-aged epitaxial samples grown under different conditions as well as on epi-ready wafers. Regardless of the morphologies of the surface, superhydrophilicity of oxygen-plasma treated samples was observed, an effect disappearing with storage time. Reproducible hydrophobicity was likewise observed, as expected, after standard HCl surface etching. The relation between surface oxides and hydrophobic/hydrophilic behavior is discussed.

Original language	English
Article number	034319
Journal	Journal of Applied Physics
Volume	110
Issue number	3
DOIs	https://doi.org/10.1063/1.3619797
Publication status	Published - 1 Aug 2011

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title = "Wettability and {"}petal effect{"} of GaAs native oxides",

abstract = "We discuss unreported transitions of oxidized GaAs surfaces between (super)hydrophilic and hydrophobic states when stored in ambient conditions. Contact angles higher than 90 and high adhesive force were observed for several air-aged epitaxial samples grown under different conditions as well as on epi-ready wafers. Regardless of the morphologies of the surface, superhydrophilicity of oxygen-plasma treated samples was observed, an effect disappearing with storage time. Reproducible hydrophobicity was likewise observed, as expected, after standard HCl surface etching. The relation between surface oxides and hydrophobic/hydrophilic behavior is discussed.",

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AU - Gocalinska, A.

AU - Gradkowski, K.

AU - Dimastrodonato, V.

AU - Mereni, L. O.

AU - Juska, G.

AU - Huyet, G.

AU - Pelucchi, E.

PY - 2011/8/1

Y1 - 2011/8/1

N2 - We discuss unreported transitions of oxidized GaAs surfaces between (super)hydrophilic and hydrophobic states when stored in ambient conditions. Contact angles higher than 90 and high adhesive force were observed for several air-aged epitaxial samples grown under different conditions as well as on epi-ready wafers. Regardless of the morphologies of the surface, superhydrophilicity of oxygen-plasma treated samples was observed, an effect disappearing with storage time. Reproducible hydrophobicity was likewise observed, as expected, after standard HCl surface etching. The relation between surface oxides and hydrophobic/hydrophilic behavior is discussed.

AB - We discuss unreported transitions of oxidized GaAs surfaces between (super)hydrophilic and hydrophobic states when stored in ambient conditions. Contact angles higher than 90 and high adhesive force were observed for several air-aged epitaxial samples grown under different conditions as well as on epi-ready wafers. Regardless of the morphologies of the surface, superhydrophilicity of oxygen-plasma treated samples was observed, an effect disappearing with storage time. Reproducible hydrophobicity was likewise observed, as expected, after standard HCl surface etching. The relation between surface oxides and hydrophobic/hydrophilic behavior is discussed.

UR - https://www.scopus.com/pages/publications/80051932808

U2 - 10.1063/1.3619797

DO - 10.1063/1.3619797

M3 - Article

AN - SCOPUS:80051932808

SN - 0021-8979

VL - 110

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 3

M1 - 034319

ER -

Wettability and "petal effect" of GaAs native oxides

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