An electric heater includes a substrate and an inner plane heating element formed on one surface of the substrate. The inner plane heating element includes an inner pattern portion connecting a start point with an end point. The inner pattern portion includes a first track, a second track located outside the first track and spaced part from the first track, a first bridge connecting the first track with one end of the second track, a third track located outside the second track and spaced apart from the second track, and a second bridge connecting the other end of the second track with the third track. A first gap G1 between the first and second tracks is shorter than a second gap G2 between the second and third tracks along a virtual line crossing the first, second and third tracks and closer to the first bridge than the second bridge.

An electrically heated aerosol generating system for receiving an aerosol-forming substrate includes at least one heating element for heating the substrate to form the aerosol and a power supply for supplying power to the at least one heating element. The power supply includes a voltage source, two or more supercapacitors, and switches between the voltage source and the two or more supercapacitors. The switches are arranged so that, during a charging mode, the supercapacitors are connected so as to be charged by the voltage source and, during a heating mode, the supercapacitors are connected so as to discharge through the at least one heating element.

An electrically heated aerosol generating system for receiving an aerosol-forming substrate includes at least one heating element for heating the substrate to form the aerosol and a power supply for supplying power to the at least one heating element. The power supply includes a voltage source, two or more supercapacitors, and switches between the voltage source and the two or more supercapacitors. The switches are arranged so that, during a charging mode, the supercapacitors are connected so as to be charged by the voltage source and, during a heating mode, the supercapacitors are connected so as to discharge through the at least one heating element.

A gas sensor includes a plurality of sensing resistors that vary in resistance based on ambient temperature and the presence of certain gases, such as CO.sub.2 and H.sub.2O. The responses of each of the sensing resistors vary based on a base temperature of each of the sensing resistors. The base temperatures for each of the sensing resistors and configurations of the sensing resistors are selected to emphasize a response to a gas of interest (e.g., CO.sub.2) while de-emphasizing or canceling contributions from ambient temperature and gases that are not of interest (e.g., H.sub.2O).

A gas sensor includes a plurality of sensing resistors that vary in resistance based on ambient temperature and the presence of certain gases, such as CO.sub.2 and H.sub.2O. The responses of each of the sensing resistors vary based on a base temperature of each of the sensing resistors. The base temperatures for each of the sensing resistors and configurations of the sensing resistors are selected to emphasize a response to a gas of interest (e.g., CO.sub.2) while de-emphasizing or canceling contributions from ambient temperature and gases that are not of interest (e.g., H.sub.2O).

An aerosol-delivery system having: an aerosol-generation apparatus with a receptacle for receiving a carrier; a heater; and a carrier for an aerosol precursor with a housing for location in said receptacle. Said housing is configured to provide a fluid pathway between a first end that is disposed in fluid engagement with an inlet of said aerosol-generating apparatus and a second end that is disposed in fluid engagement with an outlet of said aerosol-generating apparatus. A fluid-transfer article is located within said housing, the fluid-transfer article having a first region for holding an aerosol precursor and for transferring said aerosol precursor to an activation surface of a second region of said article, said activation surface disposed at an end of said carrier configured for thermal interaction with a heater of said aerosol-generation apparatus.

An aerosol-delivery system having: an aerosol-generation apparatus with a receptacle for receiving a carrier; a heater; and a carrier for an aerosol precursor with a housing for location in said receptacle. Said housing is configured to provide a fluid pathway between a first end that is disposed in fluid engagement with an inlet of said aerosol-generating apparatus and a second end that is disposed in fluid engagement with an outlet of said aerosol-generating apparatus. A fluid-transfer article is located within said housing, the fluid-transfer article having a first region for holding an aerosol precursor and for transferring said aerosol precursor to an activation surface of a second region of said article, said activation surface disposed at an end of said carrier configured for thermal interaction with a heater of said aerosol-generation apparatus.

The present disclosure relates to: a transparent sheet heater including: a substrate; a pattern layer formed on the substrate; a heat-generating layer formed on the pattern layer and including a conductive material; and an electrode connected on the heat-generating layer; a transparent sheet heater including: a substrate; a heat-generating layer formed on the substrate and including a conductive material; an electrode connected on the heat-generating layer; and a protective layer formed on the heat-generating layer, wherein the protective layer includes pores; and a transparent sheet heater system which is formed by connecting the multiple transparent sheet heaters in series or in parallel.

The present disclosure relates to: a transparent sheet heater including: a substrate; a pattern layer formed on the substrate; a heat-generating layer formed on the pattern layer and including a conductive material; and an electrode connected on the heat-generating layer; a transparent sheet heater including: a substrate; a heat-generating layer formed on the substrate and including a conductive material; an electrode connected on the heat-generating layer; and a protective layer formed on the heat-generating layer, wherein the protective layer includes pores; and a transparent sheet heater system which is formed by connecting the multiple transparent sheet heaters in series or in parallel.

The present disclosure relates to aerosol delivery devices and cartridges for aerosol delivery devices. The cartridge comprises a mouthpiece having a proximal end and a distal end, the proximal end of the mouthpiece having an exit portal defined therethrough, a tank defining a proximal end and a closed distal end, the tank being configured to contain a liquid composition that includes a distinctive characteristic, and a heater configured to heat the liquid composition. The distal end of the mouthpiece is configured to engage the proximal end of the tank, and when the cartridge is coupled with the aerosol delivery device at least one feature of the cartridge, or at least one feature of the control device, or at least one feature of both the cartridge and the control device, provides a visual indication of a color associated with the distinctive characteristic.