Förster resonance energy transfer (FRET)

Förster resonance energy transfer (FRET) is a process where energy is transferred from one molecule, known as the donor, to another, called the acceptor, without releasing it as light. This occurs when the two molecules are close together, typically within 1 to 10 nanometers. FRET is often used in scientific research to study molecular interactions, as the efficiency of energy transfer can indicate how closely the molecules are interacting. By measuring changes in the emitted light, researchers can gain insights into biological processes and the behavior of proteins within cells.