In thermodynamic equilibrium, the contact angle is related by Young's equation to the
interfacial energies. Unfortunately, it is practically impossible to measure the equilibrium …

A droplet deposited on a solid substrate leads to the wetting phenomenon. A natural
observation is the lotus effect, known for its superhydrophobicity. This special feature is …

Liquid drops sliding on tilted surfaces is an everyday phenomenon and is important for many
industrial applications. Still, it is impossible to predict the drop's sliding velocity. To make a …

The contact angle is one of the most sensitive experimental values describing a junction
between three phases, being influenced by the composition and properties of contacting …

It has been known for more than 200 years that the maximum static friction force between
two solid surfaces is usually greater than the kinetic friction force—the force that is required …

Surface wetting is a multiscale phenomenon where properties at the macroscale are
determined by features at much smaller length scales, such as nanoscale surface …

Contact angle hysteresis is an important physical phenomenon. It is omnipresent in nature
and also plays a crucial role in various industrial processes. Despite its relevance, there is a …

The abrupt change in the apparent contact angle occurring on a rough surface is called
wetting transition. This change may be spontaneous or promoted by external stimuli such as …

We review existing explanations for drop pinning and the origin of the force required to
initiate the sliding of a drop on a solid surface (depinning). Theories that describe these …

A contact angle observed for a liquid-solid system is not necessarily a unique value and a
few different contact angles need to be carefully considered in relation to liquid spreading …