The conventional mechanoluminescence (ML) mechanism of phosphors such as SrAl2O4:Eu and ZnS:Mn is known to utilize copyright trapping at shallow traps followed by stress (or strain)-induced detrapping. which leads to activator recombination in association with local piezoelectric fields. However. such a conventional ML mechanism was found to be invalid for the ZnS:Cu-embedded polydime... https://www.knowall.blog/