Determination of coalescence frequencies in liquid—liquid dispersions: effect of drop size dependence

1990 ◽  
Vol 45 (12) ◽  
pp. 3491-3504 ◽  
Author(s):  
T. Tobin ◽  
R. Muralidhar ◽  
H. Wright ◽  
D. Ramkrishna
Keyword(s):  
Drop Size ◽  
Size Dependence ◽  
Drop Size Dependence

Drop Size Dependence of the Contact Angle of Nanodroplets

2005 ◽  
Vol 22 (4) ◽  
pp. 787-790 ◽  
Author(s):  
Guo Hong-Kai ◽  
Fang Hai-Ping
Keyword(s):  
Contact Angle ◽  
Drop Size ◽  
Size Dependence ◽  
Drop Size Dependence

Drop size dependence of contact angles on two fluoropolymers

2009 ◽  
Vol 287 (10) ◽  
pp. 1167-1173 ◽  
Author(s):  
Robert David ◽  
Michelle K. Park ◽  
Ali Kalantarian ◽  
A. Wilhelm Neumann
Keyword(s):  
Drop Size ◽  
Size Dependence ◽  
Contact Angles ◽  
Drop Size Dependence

scholarly journals Water drops bouncing off vertically vibrating textured surfaces

2019 ◽  
Vol 876 ◽  
pp. 1041-1051 ◽  
Author(s):  
Wei Wang ◽  
Chen Ji ◽  
Fangye Lin ◽  
Jun Zou ◽  
S. Dorbolo
Keyword(s):  
Drop Size ◽  
Size Dependence ◽  
Water Drop ◽  
Excitation Frequency ◽  
Textured Surfaces ◽  
Acceleration Threshold ◽  
Water Drops ◽  
Different Shapes ◽  
Vertical Vibrations ◽  
Drop Size Dependence

We investigate the conditions that determine the detachment of a water drop from different vibrating textured plates by using vertical vibrations. The plate surfaces were patterned by a lattice of pillars of different shapes with different geometrical arrangements. The acceleration threshold for the water droplet to bounce off the surfaces was measured as a function of the excitation frequency. In each case, the acceleration threshold presents a minimum at the natural frequency of the droplet. The minimum acceleration required for the take-off is larger for small droplets than for large droplets. Namely, one finds that the value of the threshold depends on the size of the droplet and on the maximum apparent contact area between the droplet and the substrate. The theoretical model takes into account the energy necessary to break the capillary bridges between the droplet and the pillars of the surface. This model captures the main ingredients explaining the drop size dependence of the acceleration threshold for the take-off.

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