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Do nanoparticles have a specific behavior?

Hanging in the air, all the particles are theoretically subject to 3 types of independent actions: Sedimentation characteristic of inertia, the Thermal diffusion and the disturbances of the air or Convection.


The vertical speed of a particle depends on the differential of mass-volume density, the dimension of the particle and the viscosity of the product.

If the radius of the particle is between 1 nm and 100 nm, the erythrocyte sedimentation rate is virtually zero. Several days are necessary for the sedimentation to cover one millimeter. Even though it is slow, however, it is not standing still.