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  Black  silicon carbide  is made of quartz sand, petroleum coke and high-quality silica as the main raw materials, and is smelted at high temperature in a resistance furnace. The raw materials used in the manufacture of green silicon carbide, such as black silicon carbide, are roughly the same, and industrial salt is added as a reactant and accelerator to react in a resistance furnace. In terms of its color, it is green, so it is named  green silicon carbide . In addition to the difference in color, in general, green silicon has good sharpness and black silicon has good toughness. It is different from where they are used. The texture of green silicon carbide is purer than black silicon carbide, and the hardness is higher than that of black silicon carbide. Its grinding purpose is the same as that of black silicon carbide. It is more suitable for fine grinding of materials such as thread grinding, grinding tools, etc. Grinding materials are more widely used for workp...

Graphene quantum dots  are quasi-zero-dimensional nanomaterials, and their internal electrons are restricted in all directions, so the quantum confinement effect is particularly significant and has many unique properties. This may bring revolutionary changes in the fields of electronics, optoelectronics and electromagnetics. Used in solar cells, electronic equipment, optical dyes, biomarkers and composite particle systems. Graphene quantum dots have important potential applications in the fields of biology, medicine, materials, and new semiconductor devices. Single-molecule sensors can be realized, and ultra-small transistors or on-chip communication using semiconductor lasers may be used to make chemical sensors, solar cells, medical imaging devices, or nano-scale circuits. Graphene double  quantum dots  have different sizes of quantum dot structures. The large quantum dots are also called single-electron transistors (SET), which are used as detectors to read out the cha...