cross section Forevision strontiu_titanate Piezoelectric SurfaceOxidation Conducting Austenite Cross-section Chungnam_National_University self_assembly HardDisk food Photovoltaics LateralPFM DNA NtuEee aluminum_nitride Temasek_Lab Ram PS_LDPE PDMS PetruPoni OrganicSemiconductor PyroelectricDetector MfmPhase PVAC FrequencyModulation SingleCrystal StrontiumTitanate Defect AdhesionForce HOPG Edwin UnivCollegeLondon Polydimethylsiloxane