The two different variables applied to the measurement of equipment reliability are productive time and equipment cycles . They are the productive state , the standby state , the engineering state , the scheduled downtime state , the unscheduled downtime state , and the nonscheduled state . ESD see electrostatic discharge . Examples are nitride etch and oxide etch. Also see anisotropic etch , preferential etch , dry plasma etch , reactive ion etch , and wet chemical etch .
Examples are potassium hydroxide, buffered oxide etch, and sulfur hexafluoride.
Also see polycrystalline silicon . Also see compensation and undercut . The deposition step of an evaporation operation is condensation. It achieves this by defining exception conditions, each related to a significant abnormal situation. It may provide services for a decision authority to direct the recovery from certain situations.