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