Annealing ConductingPolymer MagneticForceMicroscopy Granada PolyvinylideneFluoride Growing HanyangUniv Floppy EPFL KevlarFiber Gong Perovskite EvatecAG Sperm Conducting AM_KPFM Cell hydrocarbon UnivCollegeLondon Gold Boundary Roughness University_of_Regensburg Change frequency_modulation HexagonalBoronNitride FM-KPFM ForceMapping MfmAmplitude Moire Trench semifluorinated_alkanes Aluminium_Oxide Pyroelectric PhaseChange