SurfaceChange DNA SSRM Graphene Mechinical Polytetrafluoroethylene Hexacontane AM_SKPM FM-KPFM lithography semifluorinated_alkane BiFeO3 SingleLayer FFM YttriaStabilizedZirconia InorganicCompound Styrene STO Defect CaMnO3 Worcester_Polytechnic_Institute tip_bias_mode Polyvinylidene_fluoride sputter SPMLabs Device Aluminium_Oxide molecule INSP semifluorinated alkane Bio PatternedSapphireSubstrat Lattice Conductance GlassTemp