Droplet actuation induced by coalescence: Experimental evidences and phenomenological modeling
نویسندگان
چکیده
منابع مشابه
Droplet actuation induced by coalescence: experimental evidences and phenomenological modeling
This paper considers the interaction between two droplets placed on a substrate in immediate vicinity. We show here that when the two droplets are of different fluids and especially when one of the droplet is highly volatile, a wealth of fascinating phenomena can be observed. In particular, the interaction may result in the actuation of the droplet system, i.e. its displacement over a finite le...
متن کاملTemperature-induced droplet coalescence in microchannels.
This paper reports a technique for temperature-induced merging of droplets in a microchannel. The multiphase system consists of water droplet and oil as the dispersed phase and the carrying continuous phase. A resistive heater provides heating in a rectangular merging chamber. The temperature of the chamber is controlled by the voltage applied to the heater. The merging process of two neighbori...
متن کاملINVESTIGATION OF WATER DROPLET COALESCENCE by one
INTRODUCTION ILLUSTRATIONS CHAPTER I 1.1 1.2 1.3 COALESCENCE OF DISTILLED WATER DROPS Introduction Experimental Methods Experimental Results a) Dimple stability of water drops b) Effects of relative humidity and Impact velocity on coalescence c) Interference patterns for colliding water ii iii vii 1 1 2 6 6 drops 8 d) Retardation of water drop evaporation 13 e) Electrical effects on dimpling 14...
متن کاملHydrodynamics of droplet coalescence.
We study droplet coalescence in a molecular system with a variable viscosity and a colloid-polymer mixture with an ultralow surface tension. When either the viscosity is large or the surface tension is small enough, we observe that the opening of the liquid bridge initially proceeds at a constant speed set by the capillary velocity. In the first system we show that inertial effects become domin...
متن کاملElectrical actuation-induced droplet transport on smooth and superhydrophobic surfaces
Electrical control of liquid droplet motion and wettability has wide-ranging applications in the field of MEMS, lab-on-a-chip devices and surface engineering, in view of the resulting enhanced flow control opportunities, low power consumption and the absence of mechanical moving parts. This article summarizes recent progress towards understanding of the fundamentals underlying electrical actuat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal Special Topics
سال: 2013
ISSN: 1951-6355,1951-6401
DOI: 10.1140/epjst/e2013-01788-0