Thermophoresis of nanoparticles in the transition regime

The thermophoresis of nanoparticles suspended in gas is investigated the transition regime by molecular dynamics simulations. It found that there exists significant discrepancy between simulation results and theoretical predictions for thermophoretic force, which attributed to adsorption molecules on gas–particle non-rigid body collisions. By using effective particle radius, Talbot et al.'s equation could agree with each other regime. In addition, effect finite system size simulations non-negligible, modified radius can coincide Phillips' quite well. Therefore, particles a few nanometers, collision nanoparticle under strong coupling should be taken into account model. investigation presented this paper provides guidance application aerosol science.