The liquid is sprayed when coming into contact with the vibrating surface.
The ultrasonic nozzle produces droplets or particles of mastered size: the higher the
ultrasonic frequency, the smaller the aerosol particles (some µm).
Two principles exist:
• Within the frequency range between 20 kHz and 100 kHz, the liquid is sprayed when
coming into contact with a vibrating surface.
• Within the frequency range above 100 kHz, an ultrasonic emitter is placed on the bottom of a volume of liquid. The sound field produces a fountain on the liquid’s surface from which an aerosol is developed.
• Medical aerosols
• Application of fine layers
• Spread in environments
• Production of plotters
• Confined atmosphere control