Applications of Nanometer Materials

2.1 Microelectronics Applications

SiO2 film has its unique process feasibility, so it has been widely used in the field of microelectronics. SiO2 has a variable band gap, in the field of semiconductors, researchers in order to improve the efficiency of light absorption, the use of its characteristics, through different experimental conditions, so that the SiO2 film as a charge storage layer in different devices, light absorption layer and gate dielectric layer in different fields play an important role. SiO2 can be used to prepare reliable and stable devices because of its good mechanical properties, low water absorption, low electrical loss and high thermal stability.

Applications in 2.2 Optics

In the late 1980 s, researchers began to pay extensive attention to the study of SiO2 optical waveguide devices based on Si and made them develop rapidly. SiO2 optical waveguide devices show a wide variety of excellent performance, for example, it can according to their own needs to modulate the electro-optic, the light amplification.

Application in the field of 2.3 food

In the field of food, the use of SiO2 can maintain the fluidity of powdered food itself, thereby preventing it from caking. We use silica to maintain its fluidity. Also, since nano-SiO2 has an adsorbing property, it can be utilized such that vitamins, fats and oils, spices and the like in a liquid state are adsorbed into a powder form, for example, solid wine and spices, powdered fats and oils and the like.

2.4 Industrial Applications

Because SiO2 has a high melting point, boiling point and stable chemical properties, it can be used as a raw material to manufacture high-temperature kiln silicon carbide, ordinary silicon bricks and high-silicon bricks. In the metallurgical industry, SiO2 can usually be used as a flux, additive and raw material to smelt silicon-containing alloys or metals. In the construction industry, SiO2 can be used as a material for testing artificial marble, road construction materials, water and concrete. In the machinery industry, SiO2 can be used as a preparation material for hard abrasive paper, sandblasting and sandpaper. In the chemical industry, SiO2 can be used to prepare water glass and silicon compounds, and amorphous SiO2 is an adsorbent. In order to improve the abrasion resistance of rubber, SiO2 is often added in the process of preparing it.