Due to the unique properties of nano-diamond in terms of strength, hardness, thermal conductivity, nano-effect, etc., it is widely used in precision polishing and lubrication, chemical catalysis, composite coating, high-performance metal matrix composite materials, chemical analysis and biomedicine, etc. And show a good application prospect.

Application	Detailed Description
Ultra-precision polishing and lubrication	Nano diamond polishing pastes and suspensions are used in electronics, radio, medicine, machinery manufacturing, gemstones and other industries for precision polishing of materials. Advantages Ultra-smooth surfaces can be obtained on solids, with low defects and roughness up to Ra2-8nm.
Reinforced rubber and resin	The use of nano-diamonds with the dual characteristics of nanoparticles and superhard materials to manufacture reinforced rubber and reinforced resins plays a significant role in improving the thermal conductivity of materials, polymer degradation temperature, strength and wear resistance, making nano-diamonds in new composite materials The field of materials has a bright future.
Reinforced metal matrix composites	The reinforced metal material is a nano-diamond composite coating and a dispersion-strengthened metal material. The composite coating can effectively improve the bonding strength between the coating and the substrate. The nano-diamond composite coating has the properties of superhardness, high wear resistance, heat resistance and anticorrosion, and can be used for coating metal surfaces, rubber, plastic, glass and other surfaces. Nano-composite plating substrates mainly include nickel, copper, cobalt, etc. The composite nickel coating containing nano-diamond is used as a wear-resistant protective layer for magnetic heads or disks. Compared with ordinary coatings, its hardness increases by 50%, and the increase in wear resistance is more significant. .
Electronic industry	Nano-diamond has a wide band gap, high electron and hole mobility, and a band gap of 5.5eV, which can greatly increase the speed of circuit operation and will not affect the characteristics of the device. Nano-diamond is the best choice for manufacturing high-reliability, radiation-resistant semiconductor devices. Ideal material.
Nanodiamond film vacuum window	The nano-diamond film vacuum window has high hardness, high elastic modulus, high thermal conductivity, low expansion coefficient, wide spectral transmission range, etc., making it an excellent vacuum window material.
electrical devices,       single photon sources and electrochemical electrodes	Nanodiamond films with novel microstructures whose luminescent properties are greatly enhanced by oxidation treatment
Fuel cells and supercapacitors	Nano-sized surface effect and volume effect, as well as special optical, electrical and other properties. This provides great possibilities for its application in energy conversion. Compared with traditional supports such as activated carbon, nanodiamond (ND) has many advantages such as high thermal stability and high corrosion resistance.

According to the performance of nano-diamond, in fact, the application fields of nano-diamond and its functional composite materials are far more than these, and its application prospect is very broad. Now, except for the use of nanodiamonds in precision grinding and polishing, there are few practical applications. With the deepening of research on nanodiamond as a functional composite material, nanodiamond and its functional composite material will gain more and more applications.