Medical tungsten alloy radiation shield refers to a shielding part made of high-density tungsten-based alloy with the composition of W-Ni-Fe, W-Ni-Cu or W-Ni-Cu-Fe. During the generation of X-ray radiation in medical treatment, the tungsten alloy radiation shield is an appropriate radiation dose-reducing measure to minimize risk to the patient and the medical team.

Tungsten alloy isotope container is a specially designed shielded transport container for radioactive sources. Also, such a container can also serve as a storage or exposure container for the radioactive sources. In nuclear medicine, it is necessary to store the radioactive sources safely, so vials of radiopharmaceuticals are held in tungsten alloy radiation shielding - tungsten alloy isotope container while the dose is drawn up into a syringe ready for treatment.

Yellow tungsten oxide titanium dioxide composite catalyst is a new type of non-toxic photocatalyst of high efficiency, which can be prepared into powder coating or other styles of green materials, for applications in decontamination and purification of various environments. Well, how to prepare tungsten oxide titanium dioxide composite catalyst?

Compared with the pure yellow tungsten oxide film (WO3 film), the nanocrystalline yellow tungsten oxide film (nanocrystalline WO3 composite film) has a significantly enhanced electrochromic optical modulation amplitude and a faster response time. And its reversibility and coloring efficiency are also improved at the same time.

Yellow tungsten oxide electrochromic glass, which is more often known as WO3 electrochromic glass, is considered to be the most promising energy-saving smart glass for large-scale commercial production. Wherein, WO3 is showing in the form of an electrochromic film, which is an important material for the electrochromic layer of electrochromic glass.

When it comes to the phenomenon of electrochromism, many people think of yellow tungsten oxide film (WO3 film) - an earliest and most studied inorganic electrochromic film material. Well, do you know what the electrochromic mechanism of crystalline WO3 film is? And what is the electrochromic mechanism of amorphous WO3 film?

Yellow tungsten oxide nanorods for application in electrochromic film are WO3 nanorods that can be synthesized by solvothermal method. For example, some experts have synthesized monodisperse tungsten oxide nanorods by solvothermal method. Wherein, the experts prepared tungsten oxide nanorods of different size by adjusting the concentration of oleylamine in the precursor, and the size of the nanorods increased from 38nm x 3.2nm to 89nm x 4.5nm. Then, the WO3 nanorods electrochromic film was constructed by heat treatment at a certain temperature.

Electrochromism refers to the phenomenon that optical properties such as transmittance and absorption of electrochromic materials undergo a stable and reversible color change under the action of an applied electric field. It means that electrochromism can occur in yellow tungsten oxide nanocrystalline composite film - an electrochromic material.

It is reported that some experts have prepared yellow tungsten oxide nanofibers (WO3 nanofibers) via electrostatic spinning with an average diameter of about 200nm. Wherein, WO3 nanofibers consist of a large amount of tungsten trioxide nano particles. These experts also studied the gas sensitivity characteristics of WO3 nanofibers-based gas sensors to H2S.

Yellow tungsten oxide cellulose nanocrystal composite film is a film of tungsten trioxide with a certain amount of cellulose nanocrystal that has the characteristics of good electrochromic performance, high transmission modulation and very good cycling stability for applications in electrochromic device. In a report, some researchers prepared the composite films of yellow tungsten oxide and cellulose nanocrystals via a sol-gel method and investigated their electrochromic properties.