Fig. 5

Extent of surface coverage and reversibility of the bio-molecular corona. Left panels: ζ-potential versus pH of A CNPs; B FNPs treated with SHDS and washed to remove the soft corona in comparison with the untreated one; right panels: EPR spectra recorded on A′ CNPs; B′ FNPs treated with the SHDS in comparison with the untreated one, using the spin-probe TEMPONE-H (Ctrl = no particles)