Paul Trap

A Paul trap, also known as a quadrupole ion trap, uses oscillating electric fields to confine charged particles like ions in a small region of space. It consists of metal electrodes arranged in a specific shape, which generate rapidly changing electric fields. These fields push and pull the particles in such a way that they stay confined without physical walls. By controlling the frequency and strength of the fields, scientists can trap, study, and manipulate ions for various applications, including mass spectrometry and quantum computing. Essentially, it's a clever way to hold charged particles in place using dynamic electric forces.