In the textile industry, azo dyes are an important raw material and a large class of organic substances that cause increasing environmental risks. These azo dyes are potentially toxic and difficult to biochemically handle. Therefore, it is of great environmental significance to take active and effective measures to treat and control azo dyes.

As a high-tech industry in the 21st century, the rapid development of semiconductor industry has far exceeded the traditional iron and steel industry and automobile industry. Silicon material is the cornerstone of semiconductor industry, but with the increasing integration, the shrinkage of size will mainly lead to leakage and static power density of devices. Recently, transition metal chalcogenides, especially tungsten disulfide and molybdenum disulfide, have attracted much attention in the scientific community due to their excellent electrical, optical and mechanical properties, as well as graphene, as a potential post-silica material.

Tungsten wire owns high resistivity and melting point, good strength, and low vapor pressure, which is the best material for making incandescent filaments in all pure metals. However, how is the thin tungsten wire made? As the tungsten is hard, brittle, and difficult to proccess.

Electrochromic means that the optical properties of materials change reversibly under the action of an applied electric field. The color and optical transmittance of electrochromic materials can be changed at low voltage, and the fading state of electrochromic materials can be maintained under open circuit condition. With this characteristic, electrochromic devices are widely used in energy saving, optical regulation and other fields. Wisdom window is one of its most representative applications.