Noncoalescing drops

被引:66
作者
Amarouchene, Y [1 ]
Cristobal, G [1 ]
Kellay, H [1 ]
机构
[1] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, UMR 5689, F-33405 Talence, France
关键词
D O I
10.1103/PhysRevLett.87.206104
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A pure water drop coalesces almost immediately with a pure water surface. Minute amounts of surfactant can alter this process dramatically. When the drop is released towards the surface of the solution from a certain height smaller than a well defined critical height, the drop of surfactant solution either remains on the surface for a specific time or coalesces immediately. The statistics of the residence time are systematically measured along with the critical heights necessary for coalescence. It turns out that the surface elasticity controls coalescence in such a situation.
引用
收藏
页码:206104 / 1
页数:4
相关论文
共 26 条
[1]   Emulsions: basic principles [J].
Bibette, J ;
Calderon, FL ;
Poulin, P .
REPORTS ON PROGRESS IN PHYSICS, 1999, 62 (06) :969-1033
[2]  
BONFILLONCOLIN A, 1994, THESIS U PARIS 6
[3]   ADSORPTION DYNAMICS OF SURFACTANTS AT THE AIR/WATER INTERFACE - A CRITICAL-REVIEW OF MATHEMATICAL-MODELS, DATA, AND MECHANISMS [J].
CHANG, CH ;
FRANSES, EI .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1995, 100 :1-45
[4]  
Charles G. E., 1960, J. Colloid Sci., V15, P236
[5]   Near-contact motion of surfactant-covered spherical drops [J].
Cristini, V ;
Blawzdziewicz, J ;
Loewenberg, M .
JOURNAL OF FLUID MECHANICS, 1998, 366 :259-287
[6]   When liquids stay dry [J].
Dell'Aversana, P ;
Neitzel, GP .
PHYSICS TODAY, 1998, 51 (01) :38-41
[7]   Suppression of coalescence by shear and temperature gradients [J].
DellAversana, P ;
Banavar, JR ;
Koplik, J .
PHYSICS OF FLUIDS, 1996, 8 (01) :15-28
[8]   FINITE-TIME SINGULARITY FORMATION IN HELE-SHAW SYSTEMS [J].
DUPONT, TF ;
GOLDSTEIN, RE ;
KADANOFF, LP ;
ZHOU, SM .
PHYSICAL REVIEW E, 1993, 47 (06) :4182-4196
[9]   Nonlinear dynamics and breakup of free-surface flows [J].
Eggers, J .
REVIEWS OF MODERN PHYSICS, 1997, 69 (03) :865-929
[10]   Coalescence of liquid drops [J].
Eggers, J ;
Lister, JR ;
Stone, HA .
JOURNAL OF FLUID MECHANICS, 1999, 401 :293-310