Contact Angle and Contact Angle Hysteresis Measurements Using the Capillary Bridge Technique

Restagno, Frédéric; Poulard, Christophe; Cohen, Celine; Vagharchakian, Laurianne; Léger, Liliane

doi:10.1021/la901616x

Cited by 35 publications

(24 citation statements)

References 34 publications

(37 reference statements)

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“…The nucleation radius and growth of the liquid meniscus pulled from a flat surface were studied by Debregeas et al [ 16 ]. The contact angle and contact angle hysteresis measurements on a curved surface (lens) pulling away from a meniscus were used to determine the advancing and receding contact angle of different solid materials [ 17 ] and the dynamics of this formation process [ 18 ]. Furthermore, the normal force of capillary bridges between solid objects was investigated [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

The capillary adhesion technique: a versatile method for determining the liquid adhesion force and sample stiffness

Gandyra¹,

Walheim²,

Gorb³

et al. 2015

Beilstein J. Nanotechnol.

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SummaryWe report a novel, practical technique for the concerted, simultaneous determination of both the adhesion force of a small structure or structural unit (e.g., an individual filament, hair, micromechanical component or microsensor) to a liquid and its elastic properties. The method involves the creation and development of a liquid meniscus upon touching a liquid surface with the structure, and the subsequent disruption of this liquid meniscus upon removal. The evaluation of the meniscus shape immediately before snap-off of the meniscus allows the quantitative determination of the liquid adhesion force. Concurrently, by measuring and evaluating the deformation of the structure under investigation, its elastic properties can be determined. The sensitivity of the method is remarkably high, practically limited by the resolution of the camera capturing the process. Adhesion forces down to 10 µN and spring constants up to 2 N/m were measured. Three exemplary applications of this method are demonstrated: (1) determination of the water adhesion force and the elasticity of individual hairs (trichomes) of the floating fern Salvinia molesta. (2) The investigation of human head hairs both with and without functional surface coatings (a topic of high relevance in the field of hair cosmetics) was performed. The method also resulted in the measurement of an elastic modulus (Young’s modulus) for individual hairs of 3.0 × 105 N/cm2, which is within the typical range known for human hair. (3) Finally, the accuracy and validity of the capillary adhesion technique was proven by examining calibrated atomic force microscopy cantilevers, reproducing the spring constants calibrated using other methods.

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Section: Introductionmentioning

confidence: 99%

The capillary adhesion technique: a versatile method for determining the liquid adhesion force and sample stiffness

Gandyra¹,

Walheim²,

Gorb³

et al. 2015

Beilstein J. Nanotechnol.

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show abstract

“…Over the past decade, the development of this methodology has seemingly been completed. The research now is focused mainly on applications related to practical problems, [53,54]. Below we demonstrate a known but not often used approach [55], marked by its geometrical transparency revealing some new insides of CB profiles.…”

Section: Capillary Bridge In a Gravity Fieldmentioning

confidence: 96%

Capillary Bridges — A Tool for Three-Phase Contact Investigation

Radoev¹,

Petkov²,

Ivanov³

2015

Surface Energy

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Subject of investigation are capillary bridges (CB) between two parallel solid plates normally oriented to the gravity field. Presented are results of study of CB with negligible gravity effects and CB undergoing observable gravitational deformations. Among the discussed problems some new aspects of the CB behavior are formulated. One of them is the so-called stretching thickness limit, i.e. the maximal thickness above which a CB of given volume and contact angles cannot exist. It is shown that the stretching thickness limit of a concave CB substantially differs from that of a convex one. Analysis of the forces acting on CB plates is presented. It clearly demonstrates that the gravity part of the forces, relative to the part of capillary forces, increases with stretching. Most of the observed effects are interpreted on the basis of the two CB radii of curvature analysis, thus avoiding the ponderous procedures of obtaining (integrating) the CB generatrix profile. The success of this approach lies in its combination with image analysis of CB profile. Discussed are the contact angle hysteresis effects at CB stretching and pressing.

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“…65 There are many other techniques to determine the contact angle. Such methods include captive bubble method, 66 capillary rise at a vertical plate, 67 capillary tube, 68 capillary penetration method (for powders and granules 69 ), capillary bridge method, 70 drop shape analysis, 71 axisymmetric drop shape analysis (ADSA), 72 and ultra-small droplets method. 73 In practice, the contact angle hysteresis (or dynamic contact angle) can be calculated using the difference between the exhibiting advancing (θa)…”

Section: Figurementioning

confidence: 99%

Recent progress in the preparation, properties and applications of superhydrophobic nano-based coatings and surfaces: A review

Nguyen-Tri

Tran

Ouellet-Plamondon

et al. 2019

Progress in Organic Coatings

322

138

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With the recent progress in nanotechnology and material engineering, nano-based coatings have become multifunctional, smarter, efficient, versatile and durable. Superhydrophobic coatings are an important class of the smart coating family, which has gained recognition in coating science over the last few years. The uniqueness of superhydrophobic coatings arises from the various phenomenal innovations, and its development is expected to continue in the next decades. . The bioinspired superhydrophobic surfaces are commonly obtained by designing a double-scale structure by using nanotechnology, followed byis the addition of water repellent compounds. It lacks an overview article describing the recent progress in superhydrophobic coatings and surfaces. In this perspective article, various fundamental aspects of wettability and related phenomena are discussed. We then present and compare the existing methods for superhydrophobic coating preparation. Superhydrophobic properties of superhydrophobic coatings such as self-cleaning, anti-icing, anti-fouling, and anti-bacterial features were then introduced. The review also discusses various superhydrophobic technological breakthroughs and future trends in the preparation and application of these materials.

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Contact Angle and Contact Angle Hysteresis Measurements Using the Capillary Bridge Technique

Cited by 35 publications

References 34 publications

The capillary adhesion technique: a versatile method for determining the liquid adhesion force and sample stiffness

The capillary adhesion technique: a versatile method for determining the liquid adhesion force and sample stiffness

Capillary Bridges — A Tool for Three-Phase Contact Investigation

Recent progress in the preparation, properties and applications of superhydrophobic nano-based coatings and surfaces: A review

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