Abstract: An aerosol generator for an aerosol-generating device is provided, including: a surface acoustic wave atomiser including a substrate including an active surface defining an atomisation region, first and second transducers on the active surface, the region positioned between the transducers; a supply element to supply a liquid aerosol-forming substrate; a controller to operate the transducers, the first transducer as an input transducer to generate surface acoustic waves, the second transducer positioned to receive the waves, and the controller is further to operate the second transducer as an output transducer to sense the waves, such that the second transducer provides an output signal; an amplifier, the atomiser arranged as a feedback line for the amplifier, such that the amplifier is to receive the output signal for the second transducer and to provide an amplifier output signal; and an analyser arranged to receive the output signal and provide an analyser output signal.

Abstract: An aerosol-generating system includes a liquid storage for holding a liquid aerosol-forming substrate, a first pair of electrodes, a second pair of electrodes and a control system. The liquid storage includes a first portion in fluid communication with a second portion. The first pair of electrodes is adjacent to or in the first portion of the liquid storage. The second pair of electrodes is adjacent to or in the second portion of the liquid storage portion. The control system is configured to measure an electrical quantity between the first pair of electrodes, measure an electrical quantity between the second pair of electrodes, and determine the orientation of the liquid storage portion based on the electrical quantity between the first pair of electrodes and the electrical quantity between the second pair of electrodes.

Abstract: An aerosol-generator for an aerosol-generating device is provided, including: a surface acoustic wave atomiser including: a substrate including an active surface defining an atomisation region, first and second transducers positioned on the active surface; first and second supply elements to respectively supply first and second liquid aerosol-forming substrates to the atomisation region; a controller to provide first and second drive signals respectively to the first and the second transducers to generate surface acoustic waves on the active surface, provide the first drive signal only when the first substrate is supplied to the atomisation region by the first supply element, and provide the second drive signal only when the second substrate is supplied to the atomisation region by the second supply element. An aerosol-generating device including the aerosol-generator is also provided.

Abstract: An aerosol-generator for an aerosol-generating device is provided, including: a surface acoustic wave atomiser including: a substrate including an active surface defining an atomisation region, and at least one transducer positioned on the active surface to generate surface acoustic waves for defining an acoustic wavefront on the active surface; and a supply element arranged to supply a liquid aerosol-forming substrate to the atomisation region so that liquid aerosol-forming substrate in the atomisation region defines an interface between the active surface, the liquid aerosol-forming substrate, and the atmosphere, in which the at least one transducer and the supply element are configured so that a shape of the acoustic wavefront at the interface corresponds to a shape of at least part of the interface. An aerosol-generating device including the aerosol-generator is also provided.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a reservoir configured for liquid aerosol-forming substrate; a heating element configured to heat the liquid aerosol-forming substrate from the reservoir; and a wall including a porous material, such that: a first space adjacent to the heating element and between the wall and the heating element forms a hot zone, a second space adjacent to the heating element forms a feed zone, the reservoir is in fluid communication with the feed zone and the hot zone, at least a portion of the wall is positioned between the hot zone and the reservoir, the wall is in contact with the hot zone and the reservoir, and a portion of the wall in contact with the feed zone is thinner than a portion of the wall in contact with the hot zone.

Abstract: An aerosol-generator for an aerosol-generating device is provided, the aerosol-generator including: a surface acoustic wave atomiser including a substrate including an active surface defining an atomisation region, and a transducer positioned on the active surface of the substrate configured to generate surface acoustic waves on the active surface of the substrate; a portion of the active surface of the substrate underlying at least a portion of the transducer including a surface treatment; and a supply element arranged to supply a liquid aerosol-forming substrate to the atomisation region.

Abstract: The vaporizer includes a tube element defining an inner volume for receiving an amount of liquid aerosol-forming substrate, a mesh in the inner volume of the tube element, and a heater outside, the heater including an electrical resistive heater, and the heater is configured to heat the mesh and the received amount of liquid aerosol-forming substrate to a temperature sufficient to volatilize at least a part of the received amount of liquid aerosol-forming substrate.

Abstract: An aerosol-generator for an aerosol-generating device is provided, the aerosol-generator including: a surface acoustic wave atomiser including a substrate including an active surface defining an atomisation region, and a transducer disposed on the active surface of the substrate; a supply element arranged to supply a liquid aerosol-forming substrate to the atomisation region; and a controller configured to operate the transducer as an input transducer to generate surface acoustic waves on the active surface of the substrate, operate the transducer as an output transducer to sense surface acoustic waves on the active surface of the substrate, and receive an output signal from the transducer when the transducer is operated as the output transducer. An aerosol-generating device including the aerosol-generator is also provided.

Abstract: An aerosol-generating element for generating an aerosol in a shisha device, the aerosol-generating element includes a receptacle for receiving an aerosol-forming substrate and a photonic device configured to generate a beam of IR radiation. The aerosol-generating element is arranged to heat the aerosol-forming substrate by directing the beam of IR radiation onto the aerosol-forming substrate. The photonic device includes an IR laser diode. The range of wavelengths of the beam of IR radiation is from 1300 nanometers to 2000 nanometers.

Abstract: An aerosol-generating article including a rod of aerosol-generating substrate is provided, the rod including: an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulose based film-forming agent, the aerosol-generating film being configured such that an exposed surface area of the aerosol-generating film within the aerosol-generating substrate is at least 5 square millimeters per mg of the aerosol-generating film, and the aerosol-generating film being substantially tobacco-free. A rod for use as an aerosol-generating substrate in an aerosol-generating article, and an aerosol-generating system including an aerosol aerosol-generating article and an electrically operated aerosol-generating device are also provided.

Abstract: An aerosol-generator for an aerosol-generating device is provided, the aerosol-generator including: a surface acoustic wave atomiser including a substrate including an active surface defining at least one atomisation region, and at least one transducer positioned on the active surface to generate surface acoustic waves on the active surface; and a supply element arranged to supply a liquid aerosol-forming substrate to the atomisation region, the supply element including a channel extending through the substrate between an inlet to receive a supply of the liquid aerosol-forming substrate and an outlet positioned within the atomisation region of the active surface, in which the channel has at least one of a cross-sectional area that varies in a direction from the inlet to the outlet and a portion that extends in a non-perpendicular direction with respect to the active surface. An aerosol-generating device including the aerosol-generator is also provided.

Abstract: An aerosol-generating device is provided, including: a first storage portion; a first liquid aerosol-forming substrate contained within the first storage portion; an electrospray device to generate a first aerosol from the first liquid aerosol-forming substrate, the electrospray device including a nozzle to receive the first liquid aerosol-forming substrate from the first storage portion, and a voltage circuit including a circuit ground, the voltage circuit to apply a voltage difference between the first liquid aerosol-forming substrate and the circuit ground; a second storage portion; a second liquid aerosol-forming substrate contained within the second storage portion; a heater to heat second liquid aerosol-forming substrate from the second storage portion; and a mixing chamber in fluid communication with the nozzle and the heater, the heater being downstream of the nozzle. A method of generating a mixed aerosol by the aerosol-generating device is also provided.

Abstract: The vaporizer includes a tube element defining an inner volume for receiving an amount of liquid aerosol-forming substrate, a mesh in the inner volume of the tube element, and a heater outside, the heater including an electrical resistive heater, and the heater is configured to heat the mesh and the received amount of liquid aerosol-forming substrate to a temperature sufficient to volatilize at least a part of the received amount of liquid aerosol-forming substrate.

Abstract: An aerosol-generator for an aerosol-generating device is provided, the aerosol-generator including: a surface acoustic wave atomiser including a substrate including an active surface defining at least one atomisation region, and at least one transducer positioned on the active surface of the substrate configured to generate surface acoustic waves on the active surface of the substrate; and a supply element arranged to supply a liquid aerosol-forming substrate to the at least one atomisation region, the supply element including a plurality of interconnected channels extending through the substrate between at least one inlet configured to receive a supply of the at least one liquid aerosol-forming substrate and at least one outlet positioned within the at least one atomisation region of the active surface of the substrate.

Abstract: An aerosol-generating device is provided, including an aerosolisation chamber configured to receive an aerosol-generating article including an aerosol-forming substrate; an air inlet configured such that ambient air may flow therethrough and into the aerosol-generating device; and an airflow path fluidly connecting the air inlet with the aerosolisation chamber, the air inlet being disposed in a recessed portion of an outer surface of the aerosol-generating device, and the recessed portion having a length of more than 10 mm and being configured to prevent blocking of the air inlet by a user. A system is also provided, including the aerosol-generating device and a mouthpiece element.

Abstract: An aerosol-generator for an aerosol-generating device is provided, the aerosol-generator including: a plurality of surface acoustic wave atomisers, each surface acoustic wave atomiser including: a substrate including an active surface, and at least one transducer disposed on the active surface of the substrate to generate surface acoustic waves on the active surface; an atomisation region defined between the substrates of the plurality of surface acoustic wave atomisers; and a supply element arranged to supply a liquid aerosol-forming substrate to the atomisation region. An aerosol-generating device including the aerosol-generator is also provided.

Abstract: A shisha system comprising an aerosol-generating article (90) and a shisha device (50). The aerosol-generating article (90) comprises an aerosol-forming substrate (92). The shisha system further comprises a first electrode (15) and a second electrode (16). The shisha device (50) comprises a liquid cavity (54) configured to contain a volume of liquid, the liquid cavity (54) having a head space outlet (60); an article cavity (14) configured to receive an aerosol-forming substrate (92), the article cavity (14) being in fluid communication with the liquid cavity (54). The shisha device further comprises an oscillation circuit (10) configured for connection to the first electrode (15) and the second electrode (16).

Abstract: An aerosol-generating system includes a liquid storage for holding a liquid aerosol-forming substrate, a first pair of electrodes, a second pair of electrodes and a control system. The liquid storage includes a first portion in fluid communication with a second portion. The first pair of electrodes is adjacent to or in the first portion of the liquid storage. The second pair of electrodes is adjacent to or in the second portion of the liquid storage portion. The control system is configured to measure an electrical quantity between the first pair of electrodes, measure an electrical quantity between the second pair of electrodes, and determine the orientation of the liquid storage portion based on the electrical quantity between the first pair of electrodes and the electrical quantity between the second pair of electrodes.

Abstract: An aerosol-generating device (1) includes a heating element (8); a dosing assembly (2) comprising: a cutting mechanism (4) disposed in a cutting region and configured to cut a portion from an aerosol-generating article (20) received by the aerosol-generating device; and a transfer mechanism (6) configured to transfer a cut portion of the aerosol-generating article from the cutting region to the heating element. The cutting mechanism may include a first blade (41) with a first cutting direction and a second blade (42) with a second cutting direction different from the first cutting direction.

Abstract: An aerosol-generating system is provided, including an aerosol-generating device and an aerosol-forming substrate, the aerosol-generating device including: a holding and exposing space configured to receive an aerosol-forming substrate; and an electromagnetic field generator configured to generate a radio frequency (RF) electromagnetic field in the holding and exposing space, the aerosol-forming substrate being configured to be received in the holding and exposing space, the aerosol-forming substrate including or contained within a liquid-filled capsule or a gel-filled capsule, the liquid-filled capsule or gel-filled capsule being configured to rupture when the liquid or the gel is dielectrically heated by the RF electromagnetic field in the holding and exposing space. A method for generating an aerosol from an aerosol-forming substrate is also provided. A capsule for insertion into a holding and exposing space of an aerosol-generating device is also provided.