PtfeMembrane LDPE GaP FrictionalForceMicroscopy ForceVolumeImage ForceDistanceSpectroscopy Molybdenum_disulfide ContactMode Galfenol Permalloy Kevlar Fluoride Polytetrafluoroethylene EFM ElectroChemical ItoGlass PetruPoni_Institute Dopped MolybdenumDisulfide ForceVolumeMapping China Laser #EC alkanes CntFilm CP-AFM ConductiveAFM HighResolution IVSpectroscopy semifluorinated_alkanes Celebration Patterns ImideMonomer Floppy BiasMode