An ion pump is a device that moves ions across a membrane, often against their concentration gradient. This process is essential in various biological and industrial applications, helping to maintain the balance of ions in cells and fluids. Ion pumps can be found in living organisms, where they play a crucial role in processes like nerve signal transmission and muscle contraction. In technology, ion pumps are used in vacuum systems to remove gas molecules by trapping them on a solid surface. They are vital in creating high-vacuum environments for applications such as semiconductor manufacturing and scientific research, ensuring that unwanted gases do not interfere with experiments or processes.