The Separation Mechanism of Particles in a Smoke by an Electric Field

It was found that smoke particles smaller than 100nm and of different crystal structures can be separated by an electric field. Tungsten oxide smoke curved in the electric field towards the positive electrode plate. The morphology of the particles and dispersion of particles became good in the electric field. By burning of Pb in a mixture gas of Ar (80%) and O₂ (20%), red and yellow layer structure particles were simultaneously produced. The flow direction of red and yellow smokes changed by applying an electric field (200V/cm). Red particles flowed towards the negative plate and yellow particles flowed towards the positive plate, i.e. two different structures were separated. Simultaneous growth conditions of SnO and SnO₂ were observed and also found that they can be separated by the use of electric field as well as lead oxides. The curve of the smoke is discussed as that the surface net charge was affected by the electric field on the basis of produced particle structure and morphology.