A vacuum cleaner of the present disclosure includes a cleaner body having a suction motor provided inside thereof and a handle provided outside thereof, and a suction nozzle connected to the cleaner body, wherein the suction nozzle includes a housing having at least part of a front portion opened, and a rotary cleaning unit disposed inside the housing, having at least part thereof exposed through the opening of the housing, and configured to clean a floor by a rotating operation, wherein the rotary cleaning unit includes a cylindrical nozzle body rotatably installed inside the housing, and fiber filaments and metal filaments disposed on an outer circumferential surface of the nozzle body.

A vacuum cleaner of the present disclosure includes a cleaner body having a suction motor provided inside thereof and a handle provided outside thereof, and a suction nozzle connected to the cleaner body, wherein the suction nozzle includes a housing having at least part of a front portion opened, and a rotary cleaning unit disposed inside the housing, having at least part thereof exposed through the opening of the housing, and configured to clean a floor by a rotating operation, wherein the rotary cleaning unit includes a cylindrical nozzle body rotatably installed inside the housing, and fiber filaments and metal filaments disposed on an outer circumferential surface of the nozzle body.

Examples provide a seat assembly, a system including the seat assembly and a method for reducing electromagnetic interference in an aircraft. A seat assembly for an aircraft includes a frame having a base and a support member operatively coupled to the base. A seat is coupled to the base and a first side of the support member. The seat includes a conductive substrate layer configured to absorb electrical charges.

Examples provide a seat assembly, a system including the seat assembly and a method for reducing electromagnetic interference in an aircraft. A seat assembly for an aircraft includes a frame having a base and a support member operatively coupled to the base. A seat is coupled to the base and a first side of the support member. The seat includes a conductive substrate layer configured to absorb electrical charges.

According to one embodiment, a robot device includes a robot and a station part. The robot is inserted into a gap between an outer peripheral surface of a first part of a first member and a second member surrounding the outer peripheral surface. The first member includes the first part and a second part. A step is formed between the first part and the second part. The station part includes an elevating mechanism. The elevating mechanism lowers the robot onto the outer peripheral surface of the first member on a lower stage side of the step, and raises the robot from the outer peripheral surface.

According to one embodiment, a robot device includes a robot and a station part. The robot is inserted into a gap between an outer peripheral surface of a first part of a first member and a second member surrounding the outer peripheral surface. The first member includes the first part and a second part. A step is formed between the first part and the second part. The station part includes an elevating mechanism. The elevating mechanism lowers the robot onto the outer peripheral surface of the first member on a lower stage side of the step, and raises the robot from the outer peripheral surface.

The present invention relates to a system having a transfer head for transferring a micro light-emitting diode (micro LED) from a first substrate to a second substrate. More particularly, the present invention relates to a system having a transfer head for transferring a micro LED, the system being configured such that the transfer head does not use an electrostatic force and preventing the generation of an electrostatic force which may cause a problem. In addition, the present invention relates to a system having a transfer head for transferring a micro LED, the system employing a suction structure using a suction force to transfer a micro LED by a porous member, thereby solving problems of the related art.

A system and method for misbalancing or suppressing spinning atmospheric phenomena such as tornadoes, landspouts, waterspouts, gustnadoes and whirlwinds. The systems and methods misbalance or suppress such phenomena utilizing electromagnetic fields; irradiation; neutralizing charges; or chemical reactions, thus destabilizing or disrupting the phenomenon.

A system and method for misbalancing or suppressing spinning atmospheric phenomena such as tornadoes, landspouts, waterspouts, gustnadoes and whirlwinds. The systems and methods misbalance or suppress such phenomena utilizing electromagnetic fields; irradiation; neutralizing charges; or chemical reactions, thus destabilizing or disrupting the phenomenon.

Provided is a substrate cleaning apparatus including: a substrate holding and rotating mechanism configured to hold and rotate a substrate; a cleaning liquid supplier configured to supply a cleaning liquid to the substrate; a cleaning member configured to come into contact with the substrate to clean the substrate; a charge amount adjustment apparatus capable of increasing and decreasing a charge amount of the substrate; a charge amount measuring instrument configured to measure the charge amount of the substrate; and a controller configured to control the charge amount adjustment apparatus according to the charge amount measured by the charge amount measuring instrument.