Abstract: A three-phase composite, and a preparation method and use thereof are provided. The three-phase composite includes a hollow glass microsphere composite foam and a plurality of carbon fiber tubes filled in the hollow glass microsphere composite foam; where the carbon fiber tubes are arranged in a two-dimensional closest packing manner, two adjacent carbon fiber tubes have a center-to-center spacing of 29.9 mm to 34 mm, and each of the carbon fiber tubes has a wall thickness of 0.45 mm to 1 mm; and two ends of each of the carbon fiber tubes each are sealed by an end cap.

Abstract: An obstacle crossing mechanism is mounted on a body of a cleaning robot and includes: a first bracket provided with a rotation center, wherein the first bracket is rotatable relative to the body around the rotation center; a roller assembly mounted on the first bracket, wherein the roller assembly includes a first roller and a second roller adjacently arranged, and the first roller and the second roller are located on a same side of the body; and an elastic telescopic assembly, wherein a first end of the elastic telescopic assembly is rotatably connected to the body, and a second end of the elastic telescopic assembly is rotatably connected to the first bracket at a preset rotation position.

Abstract: An obstacle crossing assembly includes: at least one traveling wheel group, where each traveling wheel group includes a front wheel and a rear wheel; a first connecting member, where the first connecting member is rotatably connected to the front wheel and the rear wheel respectively; and a second connecting member, where the second connecting member is rotatably connected to the first connecting member, the second connecting member is rotatably connected to a device main body of an owning device, and the second connecting member is disposed by extending towards a front end of the front wheel relative to the first connecting member. In an obstacle climbing stage of the front wheel, the first connecting member anticlockwise rotates to a stop position, and/or the second connecting member clockwise rotates to a stop position, to produce upward tension acting on the front wheel.

Abstract: A dust collecting apparatus. The dust collecting apparatus is applied to the cleaning equipment and includes a shell, the shell having a first side wall and a second side wall intersecting each other, the first side wall and the second side wall enclosing and defining the shell, and the first side wall having an exhaust inlet and a dust collecting opening which are oppositely arranged; and a compressing mechanism, located in the shell, having a fixed end and a free end which are far away from each other, the fixed end being connected in the shell, and the free end is configured to be movable in the shell toward one side close to the second side wall to extrude rubbish in the shell.

Abstract: A roller brush assembly, a cleaning device, a detection method, a storage medium, and a computer program product are provided. The roller brush assembly includes: a roller brush housing; a roller brush, located inside the roller brush housing; and a magnetic detector, located on an outer surface of the roller brush housing and configured to detect a magnetic signal, wherein the magnetic signal is configured to determine a type of the roller brush.

Abstract: Disclosed are a carbon nanotube (CNT)-based three-dimensional ordered macroporous (3DOM) carbon material and a preparation method thereof. The CNT-based 3DOM carbon material comprises a honeycomb network structure having a 3DOM structure formed by overlapping CNTs, wherein ordered macropores each have a diameter of 270 nm to 360 nm, and the CNTs each have an outer diameter of 8 nm to 20 nm.

Abstract: A self-cleaning maintenance station and a self-cleaning system are provided. The self-cleaning maintenance station includes a self-cleaning maintenance station body that includes a water storage chamber and a water storage tank assembled at a top end of the self-cleaning maintenance station body, where the water storage chamber bas a semi-enclosed structure, and the water storage chamber, with an opening facing upward and forward, is disposed at a top of the self-cleaning maintenance station body and is configured to accommodate the water storage tank; and the water storage tank, after being at least partially inserted into the water storage chamber, is assembled at the top end of the self-cleaning maintenance station body.

Abstract: A device base includes a housing having a first opening penetrating the housing; a first water tank; a water pump within the housing; a water passage opening on the housing; a first water pipe connecting the water passage opening with the water pump; a second water pipe connecting the water pump with the first water tank; a first infrared module within the housing, with its signal terminal facing the first opening and configured to transmit or receive an infrared signal that indicates a position of the device base or of a cleaning robot connected with the device base, to assist the device base in docking with the cleaning robot; and a first positioning member on the housing, configured to limit the cleaning robot when the device base is docked with the cleaning robot, and make a water injection port of the cleaning robot keep docked with the water passage opening.

Abstract: A filtering element, a dust collection pile, and a cleaning system are disclosed. The filtering element includes a frame and a filter screen. The filter screen id disposed on the frame. A receiving groove is formed on the filter screen. The receiving groove includes a first opening, a second opening, and a third opening, wherein the first opening and the second opening are provided opposite to each other, and both ends of the third opening penetrate through the first opening and the second opening.

Abstract: A fan assembly is described, including a housing, a fan, and a flexible member located between two ends of the fan and the housing. The fan is fixed within the housing by the flexible member, and the flexible member is configured to avoid a direct contact between the fan and the housing.

Abstract: Disclosed are a carbon nanotube (CNT)-based three-dimensional ordered macroporous (3DOM) carbon material and a preparation method thereof.

Abstract: One aspect of the invention provides a method of generating ultraviolet radiation. The method includes: introducing a mixture of nitrogen gas and helium gas into a dielectric barrier discharge device including a high voltage electrode and a ground electrode separated by a gap and a dielectric; and applying suitable electricity to the high voltage electrode, thereby generating ultraviolet radiation. Another aspect of the invention provides a plasma- and ultraviolet-generating nozzle including: a dielectric barrier discharge device; and a controller programmed to control flows of gas into the dielectric barrier discharge device and application of suitable electricity to the dielectric barrier discharge device to selectively generate either plasma or ultraviolet radiation. Another aspect of the invention provides a printing system including: a motion control system; and the plasma- and ultraviolet-generating nozzle as described herein coupled to the motion control system.