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Universal Two-dimensional forces that Act on Particles at interfaces
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DOI：10.1016/j.cocis.2022.101578.png)
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Abstract
En 中文
This paper starts with a short tribute to the scientific legacy of Peter Kralchevsky and his role in the collaboration with the research group of Kuniaki Nagayama in Japan. Next it presents an overview of the lateral capillary forces, studied jointly by both authors and their groups. Analogies with some other forces in nature are highlighted where relevant. The lateral capillary forces emerge between objects dispersed at a liquid interface or in liquid film and act in direction parallel to the liquid interface, being caused by the liquid surface tension. The lateral capillary forces depend on the size of the objects and the wetting of the particle by the liquid and can be either attractive or repulsive. For fine particles the force-distance relationship follows an inverse-linear law. Their effect is seen in our everyday experience that dust particles and bubbles tend to aggregate on the water surface. These forces are universally acting between any objects regardless of scale and are described by equations similar to those describing the gravitational and electric forces in the two-dimensional (2D) world. The current KN & PK review article provides a didactic overview that is easy to digest as a 2D model of gravity in general relativity, because the origin of the latter force, namely the space distortion, can be clearly visualized.
Keywords:
Capillarity
Capillary force
Lateral capillary force
Immersion force
Floatation force
Liquid film
Liquid interface
Surface tension
Gravity
Journal
C
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7
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2.0K
Citations:
9.0K