etch rate

Etch rate refers to the speed at which a material, such as metal or glass, is removed during a chemical or physical process called etching. It measures how much material is etched away over a given period, typically expressed in units like nanometers or micrometers per minute. A higher etch rate means faster material removal, which is important for precise manufacturing and microfabrication processes. Controlling the etch rate allows engineers to create detailed patterns and structures on surfaces with accuracy and consistency.