contact Mechanical BaTiO3 molecular_beam Hole self-assembled_monolayer WWafer PolyvinylAcetate TriGlycineSulphate Alloy Polyethylene CeNSE_IISc TemperatureControllerAFM Ecoli Magnetic Force Microscopy Self-assembledMonolayer Hysteresys FM_KPFM ElectroChemical Electronics 2d_materials doped Force-distance light_emission non_contact PUR PolyvinylideneFluoride CuParticle Pzt SmallScan Conductivity Wonseok InsulatorFilm lift_mode MLCC