Sliding acceleration of water droplets on a surface coated with fluoroalkylsilane and octadecyltrimethoxysilane

Shunsuke Suzuki; Akira Nakajima; Munetoshi Sakai; Jeong Hwan Song; Naoya Yoshida; Yoshikazu Kameshima; Kiyoshi Okada

doi:10.1016/j.susc.2006.03.015

Sliding acceleration of water droplets on a surface coated with fluoroalkylsilane and octadecyltrimethoxysilane

Shunsuke Suzuki, Akira Nakajima, Munetoshi Sakai, Jeong Hwan Song, Naoya Yoshida, Yoshikazu Kameshima, Kiyoshi Okada

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

30 Citations (Scopus)

Abstract

Both fluoroalkylsilane (FAS) and octadecyltrimethoxysilane (ODS) were coated on oxidized silicon wafers using soaking and CVD method. Smooth coatings with Ra values of less than 1 nm were attained. The slope of the sliding acceleration against the inverse of the droplet mass showed an inflection point. That point shifted to the direction of smaller droplets with decreasing FAS ratio to ODS. The water droplets' length was increased when the sliding velocity was increased. Fluoroalkylsilane addition to ODS increases the interaction between water and the hydrophobic surface. Results showed that the sliding acceleration of a water droplet depends strongly on the surface ratio of these silanes.

Original language	English
Pages (from-to)	2214-2219
Number of pages	6
Journal	Surface Science
Volume	600
Issue number	10
DOIs	https://doi.org/10.1016/j.susc.2006.03.015
Publication status	Published - May 15 2006
Externally published	Yes

Keywords

Acceleration
Coating
Hydrophobic
Silanes
Silicon
Sliding angle
Velocity
Water
Wetting

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2006.03.015

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title = "Sliding acceleration of water droplets on a surface coated with fluoroalkylsilane and octadecyltrimethoxysilane",

abstract = "Both fluoroalkylsilane (FAS) and octadecyltrimethoxysilane (ODS) were coated on oxidized silicon wafers using soaking and CVD method. Smooth coatings with Ra values of less than 1 nm were attained. The slope of the sliding acceleration against the inverse of the droplet mass showed an inflection point. That point shifted to the direction of smaller droplets with decreasing FAS ratio to ODS. The water droplets' length was increased when the sliding velocity was increased. Fluoroalkylsilane addition to ODS increases the interaction between water and the hydrophobic surface. Results showed that the sliding acceleration of a water droplet depends strongly on the surface ratio of these silanes.",

keywords = "Acceleration, Coating, Hydrophobic, Silanes, Silicon, Sliding angle, Velocity, Water, Wetting",

author = "Shunsuke Suzuki and Akira Nakajima and Munetoshi Sakai and Song, {Jeong Hwan} and Naoya Yoshida and Yoshikazu Kameshima and Kiyoshi Okada",

note = "Funding Information: This work was supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists (JSPS Research Fellow 2005-08586). ",

year = "2006",

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doi = "10.1016/j.susc.2006.03.015",

language = "English",

volume = "600",

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journal = "Surface Science",

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publisher = "Elsevier",

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T1 - Sliding acceleration of water droplets on a surface coated with fluoroalkylsilane and octadecyltrimethoxysilane

AU - Suzuki, Shunsuke

AU - Nakajima, Akira

AU - Sakai, Munetoshi

AU - Song, Jeong Hwan

AU - Yoshida, Naoya

AU - Kameshima, Yoshikazu

AU - Okada, Kiyoshi

N1 - Funding Information: This work was supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists (JSPS Research Fellow 2005-08586).

PY - 2006/5/15

Y1 - 2006/5/15

N2 - Both fluoroalkylsilane (FAS) and octadecyltrimethoxysilane (ODS) were coated on oxidized silicon wafers using soaking and CVD method. Smooth coatings with Ra values of less than 1 nm were attained. The slope of the sliding acceleration against the inverse of the droplet mass showed an inflection point. That point shifted to the direction of smaller droplets with decreasing FAS ratio to ODS. The water droplets' length was increased when the sliding velocity was increased. Fluoroalkylsilane addition to ODS increases the interaction between water and the hydrophobic surface. Results showed that the sliding acceleration of a water droplet depends strongly on the surface ratio of these silanes.

AB - Both fluoroalkylsilane (FAS) and octadecyltrimethoxysilane (ODS) were coated on oxidized silicon wafers using soaking and CVD method. Smooth coatings with Ra values of less than 1 nm were attained. The slope of the sliding acceleration against the inverse of the droplet mass showed an inflection point. That point shifted to the direction of smaller droplets with decreasing FAS ratio to ODS. The water droplets' length was increased when the sliding velocity was increased. Fluoroalkylsilane addition to ODS increases the interaction between water and the hydrophobic surface. Results showed that the sliding acceleration of a water droplet depends strongly on the surface ratio of these silanes.

KW - Acceleration

KW - Coating

KW - Hydrophobic

KW - Silanes

KW - Silicon

KW - Sliding angle

KW - Velocity

KW - Water

KW - Wetting

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U2 - 10.1016/j.susc.2006.03.015

DO - 10.1016/j.susc.2006.03.015

M3 - Article

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SN - 0039-6028

VL - 600

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JO - Surface Science

JF - Surface Science

IS - 10

ER -

Sliding acceleration of water droplets on a surface coated with fluoroalkylsilane and octadecyltrimethoxysilane

Abstract

Keywords

ASJC Scopus subject areas

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