Ethanol gas sensor can be used to detect ethanol content in drunk driving inspection or industrial production, avoiding traffic accidents or production safety accidents, and has important practical value. In recent years, tungsten oxide with ethanol sensing properties has attracted the attention of researchers and researchers.

Conductive thin film electrodes are the basic components of organic light-emitting devices (OLED). Their performance directly affects the light-emitting efficiency of the whole device. Among them, transparent conductive film is a photoelectric material which combines optical transparency and conductivity. Because of its excellent photoelectric properties, transparent conductive film can be widely used in solar cells, LED, TFT, LCD and touch screen display fields.

Solar control glass is the glass that transmits the total incident radiation energy (total solar heat) through a high percentage of incident light and a low percentage of total incident radiation energy. One way to produce such glass is to deposit coatings containing one or more layers of various materials, especially metal oxides, such as tungsten oxide, on the glass, which are usually of sub-micron thickness.

Typical semiconductor metal oxides such as titanium dioxide and tungsten trioxide have become the most widely studied and applied metal oxides due to their low cost, non-toxic, harmless, stable biological and chemical properties, and light corrosion resistance.

In industrial production, friction and wear are the main causes of material damage, increasing energy consumption and mechanical equipment scrapping, which has brought serious economic losses. The purpose of lubrication is to reduce friction, wear and energy consumption. The important means of lubrication technology is the use of lubricants, which can be divided into liquid lubricants, solid lubricants and solid-liquid compatible lubricants.

The increasing development of modern industry not only improves people's living standards, but also brings unavoidable damage to the ecological environment. Nitric oxide (NO) emitted from organic matter decomposition, fossil fuel combustion and chemical industry is a common atmospheric pollutant, which is one of the main substances to form acid rain and photochemical smog, and has great damage to the environment. Therefore, the research of nitrogen dioxide gas sensor components has important significance and development prospects.

With the rapid development of modern industry, a large number of untreated industrial wastewater and other untreated wastewater are discharged directly into the nature, causing huge pollution damage to the environment and seriously affecting human health. However, the traditional environmental governance has many problems, such as high energy consumption, high cost, low efficiency and incomplete governance.

With the development of modern industry, the situation of air pollution, water pollution and soil pollution is getting worse and worse. People feel the harm of environmental pollution to themselves. Protecting the environment is to save themselves. People urgently need a low cost, high efficiency and energy for non-toxic degradation and purification.

Although sunlight is a clean energy source, many problems hinder its widespread use. The most important is its intermittence, which is not always sunny, and sunny periods are not always highly correlated with electricity demand. In addition, if the electricity generated by solar energy cannot be used or stored immediately, it will be wasted. Therefore, there is a need for a practical way to store solar energy, which can be used when needed. These means can make people use solar energy and hydrogen energy more efficiently and further reduce their dependence on oil.

Titanium dioxide is known as a photocatalyst material, but it has little function in the absence of ultraviolet radiation. Therefore, Scientists prefer to study visible-light tungsten trioxide photocatalysts.