Both quantum friction and van der Waals forces stem from quantum mechanics and hold significance at the nanoscale level.
Van der Waals forces are feeble attractive interactions between atoms or molecules, arising from temporary electron distribution fluctuations, which create temporary dipoles. These forces play a pivotal role in molecular interactions and contribute to phenomena like adhesion, cohesion, and surface tension.
On the other hand, quantum friction pertains to the resistance experienced by an object moving relative to a quantum fluid, such as a Bose-Einstein condensate. This friction results from the scattering of particles comprising the object as they interact with the quantum fluid, giving rise to a net frictional force.
The association between quantum friction and van der Waals forces becomes evident when the motion of atoms or molecules in close proximity to a quantum fluid leads to the generation of van der Waals forces.