Tungsten oxide films are able to switch rapidly between transparent and blue states. These are the counteractions of the mesoporous structure and the interconnected nanocrystalline phases. Deepa et al. compared the electrochromic properties of sol-gel-derived amorphous and nanocrystalline tungsten oxide films. The pristine acetylated tungsten peroxide sol with and without the addition of 4 wt% oxalic acid dehydrating agent (OAD) produced nanocrystalline and amorphous tungsten oxide (WO₃) films, respectively, by the impregnation technique.

Analysis of latest tungsten market from Chinatungsten Online

China’s ferro tungsten and tungsten powder prices show a stable trend for the time being, mainly due to the strong rised mentality of raw material manufacturers. 

The researchers found that the thickness and content of the tungsten oxide film were found to vary depending on the concentration of the PAA coating solution (1.0-3.0 wt%), and thus the electrode performance of the PAA/WO₃ layer could be easily controlled. The special applications for WO₃ films include photoelectrochemical and electrochromic devices. Clara Santato et al. used a novel sol-gel method to prepare mesoporous tungsten trioxide nanocrystals consisting of preferentially oriented monoclinic phase semiconductor films.

This week, China rare earth price showed a pattern of first stabilizing and then rising. Under the influence of both weak supply and demand and the increasing number of positive factors, the price game among traders was fierce, that is, the confidence of suppliers in firm quotations was generally strong, and the sentiment of buyers to suppress prices continued.