Supplementary material related to this article can be found online at https://doi.org/10.1016/j.nanoso.2021.100732.; Spherical and needle shaped magnetic nanoparticles (MNPs) were synthesized by thermal decomposition, functionalized with 2-pyrrolidinone for the attachment of pUC19 plasmidic DNA and used in transformations assays of Escherichia coli JM109. Frictional and magnetic stimulation were employed for pr...