ForceVolumeMapping HanyangUniv LDPE Hysteresys DLaTGS Hexacontane molecule P3HT Liquid semifluorinated_alkane PUR NiFe PolyvinylAcetate TipBiasMode Wonseok STM Self-assembledMonolayer MultiferroicMaterials University_of_Regensburg GaP CuFoil domain_switching LiftMode Wang DOE PetruPoni_Institute Indent Mosfet YszSubstrate Scanning_Thermal_Microscopy piezoelectric force microscopy SurfaceChange PANI AdhesionForce InLiquid