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