On the role of meniscus geometry in capillary wave generation

Interfacial instability for droplet formation in two-layer immiscible liquids under rotational oscillation

“…the curved oil–water interface at the wall observed in the current study) on the interfacial instabilities may be insignificant because the driving frequency is less than that ()) for the resonant condition of such capillary waves (Shao et al. 2021). Meanwhile, we discovered that the measured difference in maximum rise of the interface is less than , and the differences in critical frequencies for interfacial waves and single-droplet formation were approximately and , respectively (for details, see supplementary material available at ).…”

Space-time resolved measurements of the effect of pinned contact line on the dispersion relation of water waves

“…In Figs. 6a − d, for one fixed frequency, we present the real part of the functions A n (x), with n = [1,2,3,4] and the fitted curves. We observe a very good agreement of the linear approximation and a decreasing amplitude as a function of n. In Fig.…”

“…In the dynamics of surface waves, capillary effects become important when the geometry of the container is in the same order of magnitude as the capillary length or in low gravity conditions, where the main restoring force is the surface tension [1][2][3]. Several recent applications and experimental works make that the problem of calculating the damping and eigenfrequencies of gravity-capillary waves is still an active subject [4][5][6][7]. When edge constraints are added (physical restrictions to the movement of the contact line between the free surface and the container), the change in the dynamic of propagating waves could become non-negligible.…”

Characterization of capillary waves: A review and a new optical method

“…The transmitting device is usually a dipped wire or plate [43], a glass capillary [4] or a plastic cylinder [44] connected to the acoustic generator. The container can also be used as the transmitting device [12,45,46,47,48]. Chantelot et al [49] used a floating magnet driven by an electromagnetic actuator instead.…”

“…Among the disadvantages are that non-linear oscillations appear in the vicinity of the resonance frequencies of the transmitting device (see sec. 4.2 below); the complex role of the contact angle and the meniscus (a meniscus deforms the surface yet it is required for efficient transmission [47]); finally, careful cleaning of the dipping plate or the capillary are necessary.…”