A Wetting

1. The act of making something wet.
2. The act of accidental urination on or in something.

**Wetting** is the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together. The degree of wetting (wettability) is determined by a force balance between adhesive and cohesive forces. Wetting deals with three phases of matter: gas, liquid, and solid. It is now a center of attention in nanotechnology and nanoscience studies due to the advent of many nanomaterials in the past two decades (e.g. graphene,^[1] carbon nanotube, boron nitride nanomesh^[2]).

Wetting is important in the bonding or adherence of two materials.^[3] Wetting and the surface forces that control wetting are also responsible for other related effects, including capillary effects.

There are two types of wetting: non-reactive wetting and active wetting