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