The Determination of Contact Angles from Measurements of the Dimensions of Small Bubbles and Drops. II. The Sessile Drop Method for Obtuse Angles

1936 ◽  
Vol 40 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Guilford L. Mack ◽  
Dorothy A. Lee
Keyword(s):  
Sessile Drop ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Drop Method ◽  
Small Bubbles

A Practical Procedure for Measuring Contact Angles in Wettability Studies by the Sessile Drop Method

MRS Advances ◽  
2019 ◽  
Vol 4 (57-58) ◽  
pp. 3143-3152
Author(s):  
J. López-Cuevas ◽  
M.I. Pech-Canul ◽  
J.L. Rodríguez-Galicia ◽  
J.C. Rendón-Angeles
Keyword(s):  
Liquid Drop ◽  
Sessile Drop ◽  
Reactive Systems ◽  
Soda Lime ◽  
Solid Substrate ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Soda Lime Glass ◽  
Experimental Conditions ◽  
Drop Method

ABSTRACTAn old procedure used to carry out a graphical derivation of curves, which is based on the optical properties of plane mirrors, has been adapted for the measurement of the contact angle (θ) formed between a liquid drop and a flat solid substrate in wettability experiments carried out by the so-called “sessile drop” method. The method was tested for mercury on soda-lime glass at room temperature in air as well as for Cusil (Ag-28wt.%Cu) and Incusil-ABA (Ag-27wt.%Cu-12wt.%In-2wt.%Ti) brazing alloys on pressureless-sintered silicon carbide (PLS-SiC) at 850 °C, under a vacuum of 10-4/10-5 Torr. The proposed method is fast, simple and accurate enough from high (∼140°) to relatively low (∼10°) contact angles. Although the proposed method has been tested for metal-ceramic systems, it is of general application, so that it would be useful for any liquid-solid system. The method is applicable for any temperature, pressure and atmospheric experimental conditions employed, as well as for any chemical composition of liquid and solid. It is also useful for both low and high contact angles, as well as for reactive and non-reactive systems, as long as a photograph of a liquid drop resting on a flat solid surface is available for the studied system.

Measuring the Contact Angles of Powders by the Sessile Drop Method

2021 ◽  
Vol 12 (3) ◽  
pp. 794-798
Author(s):  
V. E. Danilov ◽  
E. V. Korolev ◽  
A. M. Ayzenshtadt
Keyword(s):  
Sessile Drop ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Drop Method

Surface Tension Measurement of Liquid Fe-Si-B Alloy by Sessile Drop Method

2013 ◽  
Vol 573 ◽  
pp. 9-12 ◽  
Author(s):  
Kuo Lin Chao ◽  
Shuang Shii Lian ◽  
Chung Yung Wu ◽  
Ku Ling Chang
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Liquid Drop ◽  
Sessile Drop ◽  
Digital Camera ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Surface Tension Measurement ◽  
Drop Method ◽  
Increasing Temperature

The purpose of this study is to measure contact angle and surface tension of liquid Fe-Si-B alloys at high temperature using sessile drop method. The surface tension and contact angle result is based on sessile drop method by use of a digital camera to take the drop profile and fit the profile by Youngs-Laplace equation. The surface tension of liquid Fe-Si-B alloy and its dependence on temperature has been studied. Contact angles of this liquid alloy on various refractories substrate have been determined using this instrument. The result showed that the contact angles and surface tension of Fe-4Si-3B alloy liquid drop on Al2O3 substrate have value of 134 to 127and 1575-1350 mN/m respectively. The result indicated also that increasing temperature can decrease contact angle and surface tension in Fe-Si-B alloy.

A Sessile Drop Method for Facile and Robust Spheroid Cultures

2021 ◽  
pp. 2100972
Author(s):  
Bangyong Sun ◽  
Yi Zhao ◽  
Qiang Zhao ◽  
Gang Li
Keyword(s):  
Sessile Drop ◽  
Sessile Drop Method ◽  
Drop Method
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