Charge injection Charge transport Dielectric properties AgNPs KPFM Gamma irradiation Thin films EFM Transport HVDC Charge measurement Space charges Modeling Electric field distribution Silver Polyethylene Charge d'espace Permittivity Rotating machines Partial discharges HVDC cable C-AFM Nanocomposite Cross-linking by-products Electrical ageing Dielectric Polymer Fluid model PTFE Electrodes Plasma deposition Current measurement Electrostatics Mechanical properties Nanostructured dielectrics Optimization Electrical insulation Polypropylene Interfaces Radiation effects Thermal aging Plasma processes Charge transport model Bipolar charge transport model Electroluminescence Accumulation characteristics Charges injection Insulations Dielectric materials Silicon compounds FLIMM Acoustic wave propagation Pulsed electro acoustic method DC conductivity Cable Cumyl alcohol Electric field SiO2 Polarization Dielectric films Silver nanoparticles Field distribution Cross-linked polyethylene Electron-beam irradiation Kelvin Probe Force Microscopy AFM LIMM Proteins Space charge Charge trapping Conductivity LDPE XLPE FTIR Polymers Luminescence Dielectrics Interfacial charge Conduction current BSA Charge transport modeling Atomic force microscopy PEA Polyimide Aluminum oxide Epoxy Crosslinked polyethylene Dielectric material Plasma process Polymeric insulation Ageing Ac electric field Epoxy resin Cathodoluminescence Power cables Insulation Insulating polymers Breakdown Polarity reversal Dielectric charging