Droplet oscillations driven by an electric field

Surface tension and oscillation of water droplet under microwave radiation

“…Hence, the microwave does not change the natural frequencies of the droplet, in spite of the reduced surface tension and increased temperature. Since electrical field of microwave was alternated at 2.45 GHz, the effect of microwave on the frequency for droplet shape is smaller than electrostatic field (Zografov et al, 2014). Fig.…”

Wetting dynamics under periodic switching on different scales: characterization and mechanisms

“…where k 2 = 3k 1 . Now we present analytical solutions, based on eqn (12). Additional details are provided in the ESI.…”

“…Here we directly start from the limit of small wettability changes. In this limit x(t) is always close to x eq so that in eqn (12) we may approximate the prefactor 1 À x(t) as 1 À x eq , yielding…”

“…it can be used in devices, which measure liquid properties such as surface tension. 11,12 It can also be applied to mix liquids inside a drop, 10 which again is useful for the design of Labs-On-A-Chip. 1 The emergence of a variety of novel surfaces with a switchable wettability property 6,7,[13][14][15][16] has led to increased efforts in the theoretical realm to advance the understanding of the dynamics of liquids on such surfaces.…”

“…it can be used in devices, which measure liquid properties such as surface tension. 11,12 It can also be applied to mix liquids inside a drop, 10 which again is useful for the design of Labs-On-A-Chip. 1…”