+A **thin film** is a layer of material, often only nanometers to micrometers thick, formed upon a [substrate](/wiki/substrate). These precisely engineered layers imbue new, vital properties, essential in [optics](/wiki/optics) and microelectronics.
+## See also
+- [Material Science](/wiki/material_science)
+- [Nanotechnology](/wiki/nanotechnology)
+- [Coating](/wiki/coating)
... 1 more lines