Abstract: An apparatus for welding a secondary battery electrode assembly is disclosed. The electrode assembly may have negative electrodes alternatingly interleaved with positive electrodes. The apparatus may be configured to weld a plurality of non-coated electrode tabs using a sonotrode horn, each of the tabs extending from a respective one of the electrodes having a first same polarity. The sonotrode horn may include a vibration-applying plate and a horn pattern region having a protrusion-type unit pitch pattern disposed on the vibration-applying plate. A radius of curvature of a side surface of the protrusion-type unit pitch pattern disposed at an outer edge of the horn pattern region may be directly proportional to a number of the non-coated electrode tabs. A tip sharpness of the protrusion-type unit pitch pattern disposed at an outer edge of the horn pattern region may be inversely proportional to a number of the non-coated electrode tabs.

Abstract: Disclosed is a machine learning-based air handler and a control method thereof, the control method including collecting first data on an air quality of air flowing into the air handler, controlling a purification part based on the first data, collecting second data on an air quality of air passing through the purification part, and controlling the purification part according to a machine-learning model generated based on a setting value related to a control of the purification part, the first data, and the second data.

Abstract: A multiple and broadband stealth structure comprises a radar absorption unit that absorbs broadband microwave, a low-frequency transmission filter unit that is stacked on an upper portion of the radar absorption unit, and an infrared radiation unit that is combined with the low-frequency transmission filter unit to selectively emit infrared ray, thereby selectively controlling the infrared emissivity of the surface to emit infrared radiation only through an atmospheric absorption window with a low infrared transmittance and to avoid the infrared detection system.

Abstract: A food freshness maintenance system is proposed. The system may include a chamber configured to accommodate food and a freshness maintenance device installed in the chamber. The freshness maintenance device may include a main body including an inlet through which air flows in and an outlet through which the air is discharged. The freshness maintenance device may also include an electromagnetic wave module, installed at the inlet of the main body, for ionizing food freshness reducing materials included in the air by emitting electromagnetic waves to the air. The device may further include a collection module, installed at the outlet of the main body, for collecting the ionized food freshness reducing materials from the air.

Abstract: This application relates to a modular electrostatic precipitator. In one aspect, the modular electrostatic precipitator includes a housing providing a flow path through which air is moved and a charging module configured to emit electromagnetic waves to the air. The precipitator may also include a first attaching/detaching unit configured to attach and detach the charging module to and from the housing and a particle collecting module configured to collect particles in the air by applying an electrostatic force to the air. The precipitator may further include a second attaching and detaching unit configured to attach and detach the particle collecting module to and from the housing.

Abstract: Disclosed herein are an electrode having improved electrode tab welding characteristics configured such that one or more non-coated electrode tabs are provided for a plurality of stacked electrodes having the same polarity in order to maintain welding safety in the case in which the number of electrode layers that are stacked is increased in order to achieve high output and capacity, and a secondary battery including the same. Consequently, it is possible to prevent a plurality of electrode tabs from being cut at the time of welding the electrode tabs. In addition, the lower end of an electrode lead that is welded to non-coated electrode tabs provided for a plurality of stacked electrodes having the same polarity is punched so as to correspond to the non-coated electrode tabs. Consequently, it is possible to improve flexibility for a step formed in the secondary battery electrode.

Abstract: Proposed is a 3-dimensional resonant structure-based infrared selective emitter capable of maximizing the infrared selective radiation function by broadening the emissivity in the non-detection bands with resonance phenomena between multiple resonator units at the same time as securing infrared camouflage and energy dissipation-resultant surface thermal stability by reducing the emissivity significantly in the infrared detection band and selectively dissipating energy to the non-detection bands.

Abstract: The present invention provides an infrared selective emitter that can selectively emit infrared energy in a desired wavelength band, can be easily applied to a curved surface due to its flexible properties, and can protect the formed surface structure of the infrared selective emitter from external stimuli such as friction, thereby improving wear resistance and maximizing the function of infrared selective emission.

Abstract: Provided are a random copolymer for forming a neutral layer promoting directed self-assembly pattern formation, a laminate for forming a pattern including the same, and a method for forming a high-quality pattern using the same.

Abstract: The present invention provides a random copolymer including structural units represented by the following Chemical Formulae 1 to 3 for forming a neutral layer for significantly reducing process time and process costs, and promoting directed self-assembly pattern formation of a block copolymer. The present invention further provides a laminate for forming a pattern including a neutral layer having a small thickness variation value due to washing, by including the random copolymer for forming a neutral layer. The present invention further provides a method for forming a pattern capable of stably vertically orienting a block copolymer on a laminate for forming a neutralized pattern.

Abstract: This application relates to an air sterilizer and an air sterilization method using same. In one aspect, the air sterilizer includes a housing including a flow path through which air moves. The air sterilizer may also include a first sterilization module configured to emit an electromagnetic wave to the air to sterilize the air, and a second sterilization module configured to remove a microorganism in the air using an electrostatic force. The first sterilization module may adjust a wavelength of the electromagnetic wave so that an intensity of the electromagnetic wave is determined based on a type of the microorganism, by controlling a tube voltage of the electromagnetic wave.

Abstract: This application relates to a modular electrostatic precipitator. In one aspect, the modular electrostatic precipitator includes a housing providing a flow path through which air is moved and a charging module configured to emit electromagnetic waves to the air. The precipitator may also include a first attaching/detaching unit configured to attach and detach the charging module to and from the housing and a particle collecting module configured to collect particles in the air by applying an electrostatic force to the air. The precipitator may further include a second attaching and detaching unit configured to attach and detach the particle collecting module to and from the housing.

Abstract: Disclosed is a machine learning-based air handler and a control method thereof, the control method including collecting first data on an air quality of air flowing into the air handler, controlling a purification part based on the first data, collecting second data on an air quality of air passing through the purification part, and controlling the purification part according to a machine-learning model generated based on a setting value related to a control of the purification part, the first data, and the second data.

Abstract: Provided are a random copolymer for forming a neutral layer promoting directed self-assembly pattern formation, a laminate for forming a pattern including the same, and a method for forming a high-quality pattern using the same.

Abstract: Provided are a random copolymer for forming a neutral layer promoting directed self-assembly pattern formation, a laminate for forming a pattern including the same, and a method for forming a high-quality pattern using the same.

Abstract: The present invention provides a random copolymer including structural units represented by the following Chemical Formulae 1 to 3 for forming a neutral layer for significantly reducing process time and process costs, and promoting directed self-assembly pattern formation of a block copolymer. The present invention further provides a laminate for forming a pattern including a neutral layer having a small thickness variation value due to washing, by including the random copolymer for forming a neutral layer. The present invention further provides a method for forming a pattern capable of stably vertically orienting a block copolymer on a laminate for forming a neutralized pattern.

Abstract: The present invention provides a random copolymer including structural units represented by the following Chemical Formulae 1 to 3 for forming a neutral layer for significantly reducing process time and process costs, and promoting directed self-assembly pattern formation of a block copolymer. The present invention further provides a laminate for forming a pattern including a neutral layer having a small thickness variation value due to washing, by including the random copolymer for forming a neutral layer. The present invention further provides a method for forming a pattern capable of stably vertically orienting a block copolymer on a laminate for forming a neutralized pattern.

Abstract: Disclosed herein are an electrode having improved electrode tab welding characteristics configured such that one or more non-coated electrode tabs are provided for a plurality of stacked electrodes having the same polarity in order to maintain welding safety in the case in which the number of electrode layers that are stacked is increased in order to achieve high output and capacity, and a secondary battery including the same. Consequently, it is possible to prevent a plurality of electrode tabs from being cut at the time of welding the electrode tabs. In addition, the lower end of an electrode lead that is welded to non-coated electrode tabs provided for a plurality of stacked electrodes having the same polarity is punched so as to correspond to the non-coated electrode tabs. Consequently, it is possible to improve flexibility for a step formed in the secondary battery electrode.

Abstract: Provided are a random copolymer for forming a neutral layer promoting directed self-assembly pattern formation, a laminate for forming a pattern including the same, and a method for forming a high-quality pattern using the same.

Abstract: Provided are a random copolymer for forming a neutral layer promoting directed self-assembly pattern formation, a laminate for forming a pattern including the same, and a method for forming a high-quality pattern using the same.