Abstract: Examples of the disclosure relate to communication methods and apparatuses, an access point, stations and a computer readable medium. An embodiment of the method comprises: determining, at an access point and based on determining that a direct link between stations based sensing procedure is triggered, a first station and a second station associated with the sensing procedure; and transmitting, to at least one of the first station and the second station, a sensing performing request for performing the sensing procedure. In this way, target sensing between non-access-point stations is achieved, such that sensing coverage is extended and a sensing effect is improved.

Abstract: A metal 3D printing device comprises a building platform, a first powder spreading arm, a second powder spreading arm, a gas stream unit and a scanning module. The building platform is for supporting the powder. The first and second powder spreading arms are spaced and configured for spreading powder. The gas stream unites comprises a gas blowing port and a gas suction port, the gas blowing port is provided in the first powder spreading arm, and the gas suction port is provided in the second powder spreading arm. The scanning module is for emitting a laser to the powder preplaced between the first and second powder spreading arms to solidify the powder to form the product.

Abstract: A vapor chamber structure includes an aluminum upper plate, an aluminum lower plate, a working fluid and multiple micron-sized recesses. The aluminum upper plate has a first side and a second side. The aluminum lower plate has a third side and a fourth side. The aluminum upper and lower plates are correspondingly mated with each other to define an airtight chamber. The working fluid is filled in the airtight chamber. The micron-sized recesses are directly formed on the third side. The micron-sized recesses are upward raised and/or downward recessed from the third side in the form of multiple small puddles so as to enhance the boiling efficiency of the working fluid in the airtight chamber and promote liquid-vapor circulation performance of the vapor chamber. In addition, when used in a low-temperature environment, the vapor chamber structure prevents the working fluid in the airtight chamber from freezing.

Abstract: A system for logistics management based on odor molecules is provided. The system includes a sensor, an information device and a server. The sensor is arranged on an item to be tracked, and includes a colorimetric sensor array and a material which stores and releases molecules, wherein the material releases an odor molecule. The colorimetric sensor array includes a plurality of sensing materials. The plurality of sensing materials reacts with at least one metabolic molecule of the odor molecule to enable the colorimetric sensor array to present a color pattern. The information processing device includes an image capturing element for obtaining the color pattern and a transceiver for transmitting the color pattern. The server stores a database. The color pattern and the database are compared to generate a comparison result.

Abstract: A method of using high push force to fabricate a composite material containing carbon material comprises steps placing a substrate in a carbon material-containing dispersion including a carbon material, and letting one surface of the substrate contact the carbon material-containing dispersion; and providing a high push force range between 300 G and 3000 G to the carbon material-containing dispersion to push the carbon material-containing dispersion and make the carbon material enter the substrate to form a composite material containing the carbon material.

Abstract: A method for fabricating a catalytic 3-dimensional network material comprises steps: mixing an aqueous solvent with a nitrogen-containing carbon material whose surface is doped with nitrogen atoms to form a first dispersion liquid, and mixing the first dispersion liquid with ammonium carboxymethyl cellulose to form a first gel; undertaking a freeze-drying process of the first gel to remove water from the first gel to form a first product; and undertaking a low-temperature heating process of the first product at a temperature of 50-380° C. to cure the first product into a 3D network material doped with nitrogen atoms. The catalytic 3D network material of the present invention has a very high specific surface area to increase the catalytic efficiency.

Abstract: A method for fabricating a catalytic 3-dimensional network material comprises steps: mixing an aqueous solvent with a nitrogen-containing carbon material whose surface is doped with nitrogen atoms to form a first dispersion liquid, and mixing the first dispersion liquid with ammonium carboxymethyl cellulose to form a first gel; undertaking a freeze-drying process of the first gel to remove water from the first gel to form a first product; and undertaking a low-temperature heating process of the first product at a temperature of 50-380° C. to cure the first product into a 3D network material doped with nitrogen atoms. The catalytic 3D network material of the present invention has a very high specific surface area to increase the catalytic efficiency.

Abstract: A method of using high push force to fabricate a composite material containing carbon material comprises steps placing a substrate in a carbon material-containing dispersion including a carbon material, and letting one surface of the substrate contact the carbon material-containing dispersion; and providing a high push force range between 300 G and 3000 G to the carbon material-containing dispersion to push the carbon material-containing dispersion and make the carbon material enter the substrate to form a composite material containing the carbon material.