FrictionalForce HOPG Lateral Alkane Sic FrictionalForceMicroscopy Piezo C60H122 F14H20 Hydroxyapatite SetpointMode BariumTitanate PECurve LifeScience HfO2 LowDensityPolyethylene Glass molecular_self_assembly TungstenThinFilmDeposition Insulator TriGlycineSulphate GaP FloppyDisk ContactModeDot Electrode Materials HumanHair EPFL PFM Electrical&Electronics CalciumHydroxyapatite Techcomp mechanical property Hexacontane NusEce