Shape, Vibrations, and Effective Surface Tension of Water Marbles

被引：107

作者：

Bormashenko, Edward ^{[1
]}

Pogreb, Roman ^{[1
]}

Whyman, Gene ^{[1
]}

Musin, Albina ^{[1
]}

Bormashenko, Yelena ^{[1
]}

Barkay, Zahava ^{[2
]}

机构：

[1] Ariel Univ Ctr Samaria, Res Inst, IL-40700 Ariel, Israel

[2] Tel Aviv Univ, Wolfson Appl Mat Res Ctr, IL-69978 Ramat Aviv, Israel

来源：

LANGMUIR | 2009年 / 25卷 / 04期

关键词：

WENZEL WETTING TRANSITION; ROUGH SURFACES; LIQUID MARBLES; CONTACT-ANGLE; DROPS; OSCILLATIONS; LOTUS;

D O I：

10.1021/la8028484

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The surface of water "marbles" obtained with hydrophobic lycopodium and polyvinylidene fluoride particles was investigated first with environmental scanning electron microscopy. The shape of water marbles was studied both experimentally and theoretically. The mathematical model describing the deformation of marbles by gravity is proposed. The model allowed the calculation of the effective surface tension of marbles and gives 0.09 J/m(2) for marbles coated with PVDF and 0.06 J/m(2) for marbles coated with lycopodium. The effective surface tensions of marbles calculated independently by the horizontal vibration of marbles were in semiquantitative agreement with the above values (0.07 J/m(2) for marbles coated with PVDF and 0.055 J/m(2) for marbles coated with lycopodium).

引用

页码：1893 / 1896

页数：4

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