Electrochromism refers to a stable and reversible change in the color or transmittance of a material under the action of an applied voltage or electric field. At present, electrochromic materials are considered to be one of the most promising smart materials, and have great potential application value in the direction of smart window, automobile anti-glare rearview mirror and electrochromic display.

A Terahertz or THz wave usually refers to an electromagnetic wave with a frequency between 0.1 THz and 10 THz, between the microwave and the infrared. The terahertz time-domain spectroscopy system is a coherent detection technology that can simultaneously obtain the amplitude information and phase information of the terahertz pulse. By performing Fourier transform on the time waveform, the optical parameters such as absorption coefficient and refractive index of the sample can be directly obtained.

Depleted uranium composites are the most excellent penetrating core materials due to their excellent self-sharpness. In the early 1990s, based on the international public opinion and environmental pressure caused by the toxicity of depleted uranium materials, the United States began to develop an alternative uranium armor piercing core. material. On the basis of the tungsten-nickel-iron heavy alloy, the researchers designed a tungsten-based heavy alloy armor-piercing projectile through the change of the microstructure of the alloy, but there is still a big gap between the self-sharpening effect of the depleted uranium alloy.

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.