Nicotine delivery device with identification arrangement

A mist generator device for use with a driver device, the mist generator device comprising:

• a mist generator housing having a length, a first end with an air inlet port and second end with a mist outlet port, the second end being opposite to the first end, the mist generator housing having a longitudinal axis passing through the first end and the second end;
• a liquid chamber provided within the mist generator housing, the liquid chamber containing an e-liquid to be atomized, wherein the e-liquid comprises a composition including nicotine;
• a sonication chamber provided within the mist generator housing, the sonication chamber having an entrance with a cross-sectional area in a plane generally parallel to the longitudinal axis;
• a capillary element extending between the liquid chamber and the sonication chamber such that a first portion of the capillary element is within the liquid chamber and a second portion of the capillary element is within the sonication chamber;
• an ultrasonic transducer having a generally planar atomization surface which is provided within the sonication chamber, the ultrasonic transducer being mounted within the mist generator housing, wherein part of the second portion of the capillary element is superimposed on part of the atomization surface, and wherein the ultrasonic transducer is configured to vibrate the atomization surface to atomize the e-liquid carried by the second portion of the capillary element to generate a mist comprising the atomized liquid and air within the sonication chamber;
• and
• an airflow arrangement within the mist generator housing which provides an air-flow path between the air inlet port, the sonication chamber and the mist outlet port, the airflow path being along a majority of the length of the mist generator housing substantially parallel to the longitudinal axis, the airflow path having a first segment with a length between the air inlet port and the sonication chamber and a second segment with a length between the sonication chamber and the mist outlet port, the length of the first segment being greater than the length of the second segment, the first segment of the airflow path at the entrance of the sonication chamber having a cross-sectional area in a plane transverse to the longitudinal axis that is less than the cross-sectional area of the entrance to the sonication chamber, the airflow arrangement being configured to guide the direction of a flow of air along the airflow path such that the flow of air passes into the sonication chamber and exits in a direction substantially parallel to the longitudinal axis of the mist generator housing to the mist outlet port.