self-assembled_monolayer PDMS Monisha Sic IISCBangalore Conductance TemperatureControllerStage PinpointPFM ferromagnetic Potential Flake TransitionMetal SmallScan ReflexLens CHRYSALIS_INC AlkaneFilm Nickel Polymer Alloy PVAP3HT PhaseTransition ForceDistanceSpectroscopy LateralForce SThM layers Scanning_Thermal_Microscopy Forevision Beads Alkane Fluoride Graphene YttriaStabilizedZirconia Optoelectronic FrictionalForceMicroscopy STM