The project is aimed at the development of an inexpensive, compact, and efficient generator of therapeutic aerosols suitable for inhalation therapy for adults, infants, and children. The device is expected to produce monodisperse aerosols, with fixed and known drop size, determined by the aerosol generator head used.The design principle allows implementation as a portable device, small enough to be worn underneath clothing. The aerosol may be dispensed by a button pinned to the patient's shirt collar.National Heart, Lung, and Blood Institute (NHLBI)