I am interested to know what is the role of magnetic material(i.e. ferrites) in killing the bacteria than the non-magnetic material? how magnetic nanoparticles going to affect the bacteria?
Magnetic field generated by low-frequency square wave is an alternating magnetic field with steep rise and fall that generates strong shock wave, resulting in changes in the diamagnetism of the heterotrophic bacteria and the electric dipole moment of proteins, so metabolism of the bacterial cell was impeded and the microbial was killed.
I attache a publication concerning cytotoxicity, I found. I am no biologist but I assume, that magnetic nanoparticles can be influenced from outside by switching a magnetic field.
One of the effects is that ac magnetic field produce heating (hyperthermia) which in turn kill some selected cells. Besides some magnetic nanoparticles can adhere to some cell membrane according charge attraction which causes to disable the membrane function and in turn killing the cell.
Dear Mohsen Zolghadr , can you explain how does the change in diamagnetism take place? what exactly happens that the dipole's magnetic nature changes? I would be thankful if you could clarify this for me.