While almost any kind of face mask offers some protection against particles and pathogens of different sizes, the most efficient ones make use of a layered structure where one or more layers are electrically charged. These electret layers are essential to efficient filtration of difficult-to-capture small particles, yet the exact nature of electrostatic capture with respect to both the charge on the particles and the electret fibres as well as their immediate environment remains unclear. I will discuss the electrostatic interaction between the surface of a single charged electret fibre and a model of SARS-CoV-2 virus. Using Poisson-Boltzmann electrostatics coupled to a spike protein charge regulation model, both pH and salt concentration drastically change both the scale and the sign of the interaction.
Speaker: Dr. Podgornik Rudolf
Affiliation: School of physical sciences, University of Chinese Academy of Sciences, Beijing
Time: May. 27, 2021
Venue: The Conference Hall in Xishuangbanna Headquarter
The 101 meeting room in Kunming Division (video conference)
Link链接: https://pan.baidu.com/s/1iCb-w0XLxcpBWsF6ddRsSg 提取码: pdb7