Electronic cigarettes

An electronic cigarette comprising:

• a cartridge having a first end and a second end, the cartridge comprising:
• an evaporation heater configured to generate heat and to evaporate a liquid from a surface thereof;
• a liquid drawing element;
• a liquid container;
• an outlet;
• and
• an actuator having a first end and a second end, the actuator comprising a processing unit,
• wherein the first end of the actuator is connectable with the second end of the cartridge, wherein the electronic cigarette further comprises a first trigger configured to generate a first trigger activation signal, and a liquid deposition mechanism comprising the liquid drawing element and the liquid container, wherein the liquid drawing element is spaced apart from the evaporation heater in at least a first state of the electronic cigarette, and wherein the liquid deposition mechanism is configured to transfer a discrete volume of an aqueous formulation from the liquid drawing element to the evaporation heater in a second state of the electronic cigarette, wherein the liquid drawing element is in contact with the liquid container in both the first state of the electronic cigarette and the second state of the electronic cigarette, wherein the processing unit is configured to receive at least one operation signal and to control operations of at least one of the evaporation heater and the liquid deposition mechanism upon receiving the at least one operation signal, wherein the at least one operation signal comprises the first trigger activation signal.