Abstract: A photocurable composition includes: a photocurable oligomer; a photocurable monomer including a monofunctional (metha)acrylate monomer and a polyfunctional (metha)acrylate monomer; a functional raw material including an antioxidant and a surface additive; and a photoinitiator. The photocurable oligomer may include at least one of (metha)acrylate, polyester-based (metha)acrylate, epoxy (metha)acrylate, or urethane (metha)acrylate. The photocurable oligomer may be included in an amount of about 15 wt % to about 25 wt %, based on a total weight of the photocurable composition, and have a weight-average molecular weight of about 500 g/mol to about 10000 g/mol.

Abstract: An aerosol generating device includes a main body including a semi-exterior portion having an accommodation space into which a cigarette is inserted, a cartridge detachably coupled to the semi-exterior portion, an antenna arranged on a surface of the semi-exterior portion to face a surface of the cartridge, a sensor configured to sense a capacitance of the antenna, and a controller electrically connected to the sensor. The controller is configured to determine, based on the capacitance, a residual quantity of an aerosol generating material in the cartridge and whether or not the cartridge is detached.

Abstract: An aerosol generating device includes a vaporizer configured to generate aerosol from an aerosol generating material, a medium accommodating portion in which a medium through which the aerosol generated by the vaporizer passes is accommodated, a path through which the aerosol generated by the vaporizer flows, and a chamber located between the path and the medium accommodating portion, having an inner diameter greater than an inner diameter of the path, and configured to deliver the aerosol supplied from the path to the medium accommodating portion.

Abstract: A method of manufacturing a cartridge includes plasma-treating at least a portion of a region of a storage of a cartridge, applying an adhesive to the region of the storage which is plasma-treated, and sealing the storage by coupling a cover to the region of the storage to which the adhesive is applied.

Abstract: An aerosol generating device includes a housing including an accommodation space, a cartridge detachably coupled to the accommodation space of the housing, and including a storage, in which an aerosol generating material is stored, and an atomizer configured to vaporize the aerosol generating material, a sensor arranged in a portion adjacent to the accommodation space of the housing and configured to detect capacitance of the storage, a cover arranged between the cartridge and the sensor and configured to protect the sensor, and a processor electrically connected to the sensor, wherein the processor is configured to detect a remaining amount of the aerosol generating material stored in the storage, based on the capacitance of the storage detected by the sensor.

Abstract: An aerosol generating device includes a case including an accommodation space to accommodate an aerosol generating article and configured to accommodate at least one electronic component, a heater arranged in the accommodation space and configured to heat the aerosol generating article accommodated in the accommodation space, a cartridge detachably coupled to the case and including a storage which stores an aerosol generating material, and a vaporizer configured to receive and heat the aerosol generating material, wherein the case includes a vent formed between the accommodation space and the cartridge, and configured to be through which air heated by the heat generated from the heater or the vaporizer passes.

Abstract: A pouch for an aerosol generating device includes a liquid composition that generates an aerosol when heated, and a water-soluble film surrounding the liquid composition.

Abstract: A vaporizer for an aerosol generating device includes a storage unit storing an aerosol generating material, and a heating chamber configured to heat the aerosol generating material, wherein the heating chamber includes a wick extending in a longitudinal direction and configured to absorb the aerosol generating material, a coil wound around the wick and configured to heat the aerosol generating material absorbed into the wick, and an accommodation portion configured to accommodate the wick, a diameter of wire of the coil is 0.15 mm to 0.2 mm, the number of turns of the coil is 6 times to 9 times, and an ohmic loss in the coil is less than 8 watts (W).

Abstract: Provided is a vaporizer including a storage for storing an aerosol generating material, a generator configured to generate an aerosol from the aerosol generating material, and an accommodating unit including a chamber configured to accommodate the generator, and an inlet configured to introduce air into the chamber, wherein the accommodating unit includes a plurality of walls surrounding the chamber, and at least some of the plurality of walls include an inclined surface.

Abstract: An aerosol generating device includes a housing that forms an exterior of the aerosol generating device, and includes an opening into which a cigarette is inserted, a heater that generates an aerosol by heating the cigarette, a battery that supplies power to the heater, a temperature sensor that senses a temperature of an internal component of the aerosol generating device, and a controller that prevents abnormal operation of the aerosol generating device based on the temperature of the internal component sensed by the temperature sensor.

Abstract: An apparatus and method for predicting a friction coefficient of a road surface are disclosed. The apparatus includes a microphone that obtains a sound signal around a tire mounted on a vehicle, and a controller that estimates a state and a type of the road surface and a degree of tire wear corresponding to the sound signal around the tire based on a first deep learning model, estimates a peak adjustment factor and an initial inclination adjustment factor of a friction coefficient curve corresponding to the state and the type of the road surface and the degree of tire wear based on a second deep learning model, and predicts the friction coefficient based on the peak adjustment factor and the initial inclination adjustment factor of the friction coefficient curve.

Abstract: A focusing method of a camera for obtaining an image of a surveillance area by performing a pan-tilt-zoom (PTZ) operation is included. The focusing method includes: determining whether a region of interest set in the surveillance area is included in a first image obtained by the camera; converting a mode according to a result of the determination by selecting a first mode in which focusing is performed using a first focusing algorithm or a second mode in which focusing is performed using a second focusing algorithm that is different from the first focusing algorithm; and focusing the camera with respect to the first image according to the first mode or the second mode.

Abstract: An aerosol generating system includes: a cigarette including a first segment and a second segment; a heater generating an aerosol by heating at least a portion of an aerosol generating substrate arranged in the first segment and the second segment; a cigarette recognition sensor detecting an identification element arranged in the first segment or the second segment in the cigarette; and a controller identifying a type of the cigarette on the basis of a result detected by the cigarette recognition sensor and controlling a power supply to the heater to heat the cigarette according to a temperature profile corresponding to the identified type.

Abstract: An aerosol generating system includes a holder including: a heater configured to heat an aerosol generating article; a holder battery configured to supply electric power to the heater; and a holder processor configured to measure a remaining charge value of the holder battery; and a cradle detachably coupled to the holder and including: a cradle battery having a greater battery capacity than the holder battery; and a cradle processor configured to: identify whether the holder is coupled to the cradle, receive a remaining charge value of the holder battery from the holder processor based on the holder being coupled to the cradle, and control the cradle battery to supply electric power to the heater based on the received remaining charge value being greater than or equal to a preset reference value.

Abstract: An aerosol generating device includes: a coil configured to generate a magnetic field by a current flowing through the coil; a heater configured to be induction heated via the magnetic field; and a controller configured to control the current. The controller is further configured to change a frequency of the current flowing through the coil within a pre-set driving frequency range; and determine whether a magnitude of the current flowing through the coil exceeds a threshold value according to one or more changed frequencies of the current.

Abstract: A tobacco material includes a core including a first tobacco mixture, and a shell surrounding at least a portion of the core and including a second tobacco mixture, wherein the first tobacco mixture includes first tobacco particles and a flavor substance, the second tobacco mixture includes second tobacco particles, and the shell has a surface roughness (Ra) of about 5.0 to about 10.0.

Abstract: An aerosol generating apparatus according to an aspect includes a memory that stores data relating to a state of the aerosol generating apparatus, a display that outputs information relating to the aerosol generating apparatus, and a processor, and the processor detects an abnormal operation of the aerosol generating apparatus based on data stored in the memory, performs self-diagnosis on modules included in the aerosol generating apparatus as the abnormal operation is detected, and controls the display to output a first solution corresponding to an error detected according to the self-diagnosis.

Abstract: An aerosol generating device includes: a main body including a semi-exterior portion on a surface of which a 1-1st contact electrode and a 1-2nd contact electrode are formed to be apart from each other; a cover detachably coupled to the main body and including a 2-1st contact electrode corresponding to the 1-1st contact electrode and a 2-2nd contact electrode corresponding to the 1-2nd contact electrode; and a controller configured to determine that the cover is mounted on the main body when the 1-1st contact electrode and the 1-2nd contact electrode are electrically connected to each other.

Abstract: According to one or more embodiments, an aerosol-generating device may be provided, the aerosol-generating device including: a cigarette insertion detection sensor detecting whether a cigarette is inserted into an accommodation space of the aerosol-generating device; a heater heating the cigarette inserted in the accommodation space; at least one temperature sensor measuring temperatures of at least two locations inside the aerosol-generating device; and a controller configured to determine whether the aerosol-generating device is in an overheated state based on temperatures measured by the temperature sensor when the cigarette inserted into the accommodation space is detected by the cigarette insertion detection sensor, and automatically perform a heating operation using the heater after waiting until the overheated state is finished when it is determined that the aerosol-generating device is in an overheated state.

Abstract: An aerosol generating device includes a heating element of which inner surface have different portions having different structures such that the portions of the heating element may heat corresponding areas of an aerosol generating article which is inserted in the aerosol generating device at different temperatures, thereby providing a good quality of aerosol to the user.