Topic
Sessile drop technique
About: Sessile drop technique is a research topic. Over the lifetime, 2827 publications have been published within this topic receiving 68943 citations.
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TL;DR: In this article, the effect of cationic (n-cetyltrimethylammonium bromide − CTAB) and non-ionic surface-active substances (SAS) on the kinetics of rising bubble attachment to a quartz surface and flotation recovery of quartz particles was investigated.
27 citations
TL;DR: In this article, the second-order differential equation describing the profile of a sessile drop has been derived in polar coordinates using the criterion of minimum free energy and applying the calculus of variations.
Abstract: The second-order differential equation describing the profile of a sessile drop has been derived in polar coordinates using the criterion of minimum free energy and applying the calculus of variations. Application of a form of perturbation theory leads to an approximate solution valid for drops of sufficiently small maximum diameter. In the case of drops of contact angle > 90°, this solution can be exploited directly to obtain the contact angle from a knowledge of drop height, maximum diameter and diameter at the plane of contact with the solid. If this last datum is lacking, the contact angle can still be obtained by a reiterative method or graphically. For contact angles < 90° this last procedure must be used and thus little advantage is gained over a solution previously obtained in cartesian coordinates. Although the solution is less accurate than data obtained from numerical integration, its relative simplicity should prove useful for the objective determination of contact angles.
27 citations
01 Oct 1985
TL;DR: In this paper, a drop of one liquid is acoustically levitated in another liquid (host) and is also driven into quadrupole shape oscillations, provided that the size of the drop and the densities of the two liquids are known.
Abstract: A technique for measuring interfacial tension is presented. A drop of one liquid is acoustically levitated in another liquid (host) and is also acoustically driven into quadrupole shape oscillations. The interfacial tension is inferred from the resonance properties of the drop, provided that the size of the drop and the densities of the two liquids are known. The relevant results of theories are mentioned. The apparatus and procedure are described. Some special features of this technique are discussed; for example, the drop has an indefinite lifetime, the interface has no contact with any solid surface, and any changes of the interfacial tension can be tracked automatically. Data for the interfaces such as water-hexane, water-propane (superheated by 65°C), and water-hexane-surfactant are reported.
27 citations
TL;DR: In this paper, the reactive wetting behavior of SAC-Ti/zirconia with SnAgCu-x%Ti was investigated via the sessile drop method in isothermal experiments.
27 citations
TL;DR: In this paper, a novel composition of Cu-Pd-V filler alloy was designed for the joining of C f /SiC composite, which was fabricated into brazing foils with a thickness of 0.15mm by a rolling process.
27 citations