I-VSpectroscopy IMT_Bucharest Graphene OrganicCompound sputter PDMS Dental ring shape Polyvinylidene_fluoride MfmPhase Gong ElectroDeposition ScanningSpreadingResistanceMicroscopy Carbon Ca10(PO4)6(OH)2 nanomechanical lift_mode temperature controller AFM Beads Hydroxyapatite Silver CeramicCapacitor Oxide Force-distance SICM temp Polystyrene Conductivity CompactDisk PhaseChange Tape TransitionMetal Pinpoint PFM Ptfe SRAM