Glossary
Environmental barriers by ALD

Homogeneous layer

A layer consisting of a single material.

Nanolaminate

An assembly of alternating layers composed of several different materials, typically less than 100 nm thick. This definition applies to inorganic/inorganic stacks and organic/inorganic stacks.

Percolation; Percolation

The formation of a continuous path through a material that allows a species to be transported from one side to the other when the defect density exceeds a critical threshold.

Permeant; Permeant

A gaseous or liquid species capable of diffusing through a material.

Free volume; Free volume

The space between polymer chains that is not occupied by polymer molecules.