electrorotation

Electrorotation is a technique used to study tiny particles or cells by applying a rotating electric field. When an electric field rotates around a particle, it causes charges inside or on its surface to move, creating a torque that makes the particle spin. By observing how the particle rotates at different electric field strengths and frequencies, scientists can learn about its electrical properties, like membrane conductivity or internal structure. This method provides valuable insights into cell composition and health without physical contact, making it useful in biological and medical research.