Charge build up in nanotechnology can occur through various mechanisms:
Triboelectric effect: This occurs when two different materials come into contact and then separate, transferring electrons from one to the other. Photoelectric effect: Exposure to light can cause electrons to be ejected from the surface of a material, leading to charge accumulation. Field emission: Under high electric fields, electrons can be emitted from the surface of a material. Chemical reactions: Surface reactions can result in the transfer of electrons, leading to charge build up.