But researchers at the Israel Institute of technology and the Tata Institute of basic research in India have come up with a new N95 mask that can be recharged and reused. It is reported that traditional N95 masks have a short board with decreasing effectiveness over time through mechanical filtration (micro fiber matrix capturing particles) and electrostatic filtration (particles are attracted to the surface with static charge). < / P > < p > when air and moisture pass through, the static charge also dissipates. Even though it can be disinfected by ultraviolet or decontamination at high temperature, the electrostatic charge as the second barrier cannot be recovered. In view of this, Dov Levine and Shankar Ghosh proposed an efficient N95 filtering scheme based on charging. All that needs to be done is to place the filter screen between the two flat electrodes and apply an enhanced electric field. < / P > < p > the researchers wrote in an article published in the Journal of physics of fluids: “we found that the total charge silent on the mask depends largely on the charging time. After 60 minutes of 1000V charging, it can almost be restored to its original state. “. < / P > < p > obviously, it is unlikely that shift medical staff will accept this type of removable respirator (unless specially customized). But for ordinary people, it may also be possible to maintain the electrostatic adsorption filtering effect of the mask through the built-in battery. < / P > < p > at present, the more important thing is how to make it with ready-made equipment and materials, and promote it in urban and rural areas. Finally, before commercial promotion, the research team has to go through a series of comprehensive tests. Didi Qingju bicycle has entered 150 cities