Patent ID: 7393385

Claim:
An apparatus for electrostatically depositing aerosol particles comprising: a particle generator selected from an induction particle generator, a flame spray pyrolysis generator, an ultrasonic particle generator and combinations thereof connected to an inlet passage adapted to carry a flow of aerosol in the direction of a center axis of the inlet passage; a diverging section connected to the inlet passage, the diverging section comprising an outlet passage and a particle deposition passage, wherein the particle deposition passage forms a turn relative to the center axis of the inlet passage; wherein the particle deposition passage comprises a charging zone comprising a charger and is adapted to receive a flow of aerosol from the inlet passage, an electrostatic deposition zone adapted to receive a flow of aerosol from the charging zone and an outlet passage positioned at the terminal end of the particle deposition passage; and the electrostatic deposition zone comprises a pair of deposition electrodes spaced apart and facing one another.