Fig. 1
From: Basic science of electronic cigarettes: assessment in cell culture and in vivo models
Electronic cigarette. The cartridge contains a fluid with nicotine, flavours, propylene glycol and water. The heating/atomizer heats the content of the cartridge to create a vapour that can be inhaled through the mouthpiece. The (pressure) sensor detects the airflow when the smoker inhales, and signals the microprocessor to control the heating element and the LED tip. This tip lights up when the smoker inhales to mimic the glow of a burning cigarette. A (rechargeable) battery provides the power