margarine Sapphire molecules SiliconCrystal Photovoltaics Lift Reduction TipBiasMode LMF Dopped ForceVolumeMapping Friction Polyvinylidene_fluoride suspended_graphene Anneal PVA C60H122 ChemicalCompound MfmPhase FailureAnlaysis temperature controller AFM Lateral_Force_Microscopy BismuthFerrite Crystal pinpoint mode Current TungstenThinFilmDeposition PtfeFilter Sic NtuEee Morphology chemical_compound Polarization Heat TPU