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