Nicotine droplet delivery device

An electronically actuated droplet delivery device comprising:

• a housing comprising a mouthpiece located at an airflow exit side of the housing;
• a reservoir disposed within or in fluid communication with the housing including a fluid with nicotine;
• an electronically actuated ejector mechanism in fluid communication with the reservoir and configured to generate an ejected stream of droplets;
• at least one pressure sensor positioned within the housing;
• the at least one pressure sensor configured to activate the ejector mechanism upon sensing a pre-determined pressure change within the housing to thereby generate the ejected stream of droplets;
• a spray detector including at least one of a light sensor, optical sensor and photodetector positioned within the housing between the ejector mechanism and a droplets exit;
• and
• the ejector mechanism comprising a piezoelectric actuator and an aperture plate, the aperture plate having a plurality of openings formed through its thickness and the piezoelectric actuator operable to oscillate the aperture plate at a frequency to thereby generate the ejected stream of droplets, wherein the aperture plate is spaced apart from the reservoir and receives the fluid by capillary flow via a capillary feed member positioned between the aperture plate and the reservoir, wherein the capillary feed member increases contact between the fluid and the aperture plate;
• wherein at least about 50% of the droplets in the ejected stream of droplets have an average ejected droplet diameter of less than about 5 microns.