[[Chemical vapor deposition]] (CVD) consists of the substrate being exposed to one or more volatile precursors, which react and/or decompose on the substrate surface to produce the desired deposit. There are many methods for enhancing the chemical reaction rates of the precursors. The LNF has fourteen [[Low pressure chemical vapor deposition| Low Pressure CVD (LPCVD)]] furnace tubes and five [[Plasma enhanced chemical vapor deposition| Plasma Enhanced CVD (PECVD)]] chambers.