Simultaneous determination of contact angle and interfacial tension from sessile drop measurements

Effect of Temperature and Pressure on Contact Angle and Interfacial Tension of Quartz/Water/Bitumen Systems

“…More tables were generated by Padday (1969) and also by Hartland and Hartley (1976). Malcolm and Paynter (1981) used another analytical method to calculate the IFT and Θ of nonwetting sessile drops (Θ>90°). Burnet (1971, 1969) started the development of a numerical method to calculate the IFT and Θ for sessile drops.…”

A robust algorithm for the simultaneous parameter estimation of interfacial tension and contact angle from sessile drop profiles

“…Therefore, the results are presented for the % error inγ to show the relative error expected in the experimental values obtained using PSDA-FEM. It has been noted in the literature [16][17][18][19][20][21][22][23] that the sessile drop technique does not have the same accuracy in interfacial tension measurements as the pendant drop technique due to asymmetry and nonuniformity of the substrate surface. In addition to these sources of error, it is also necessary to evaluate the effect of pixel size on the accuracy and precision of the parameter estimates for γ .…”

“…The digitization of a drop profile along with numerical integration of the Young-Laplace equation to compute the best fit curve is a versatile, repeatable, accurate and widely used technique for determining the interfacial tension and contact angle of experimental systems [16][17][18][19]. Skinner et al [20] and Moy et al [21] develop a method based on the axisymmetric drop shape analysis of pendant and sessile drop profiles which requires an input of several system parameters.…”

Laplacian drop shapes and effect of random perturbations on accuracy of surface tension measurement for different drop constellations

“…Depending on specific purpose or given experimental constraints, different experimental constellations are considered: pendant drops (PD) [1][2][3][4][5][6][7][8], sessile drops (SD) [9][10][11][12][13][14], constrained sessile drops (CSD) [15][16][17][18][19], captive bubble (CB) [20][21][22][23] and liquid bridges (LB) [24,25] are of interest. The most commonly used of these are pendant drops and unconstrained sessile drops (SD).…”