TungstenDeposition cross section LithiumNiobate TiO2 Polydimethylsiloxane Solar ForceVolumeMapping IVSpectroscopy Layer MLCC GaAs Yeditepe NTU FFM graphene_hybrid BFO Calcite Fet BiFeO3 temp Cobalt-dopedIronOxide StrontiuTitanate MultiferroicMaterials Subhajjit Inorganic_Compound Nickel LiftHeight Foil Flake piezoelectric force microscopy TipBiasMode WS2 NusEce Gong polyvinyl acetate