The movement of nanoparticles, or their dynamics, is influenced by several factors including Brownian motion, sedimentation, and external forces like electric or magnetic fields.
- Brownian Motion: This is the random motion of particles in a fluid due to collisions with molecules of the fluid. It is a significant factor for nanoparticles because their small size means they are constantly being bombarded by fluid molecules. - Sedimentation: This occurs when gravity pulls the nanoparticles down through a fluid. The rate of sedimentation depends on particle size, density, and the viscosity of the fluid. - External Forces: Electric and magnetic fields can be used to manipulate the motion of nanoparticles, especially if they are charged or magnetic.
