mechanical_property Vac Conduct Techcomp oxide_layer Polydimethylsiloxane Insulator C_AFM Composition Led high_resolution PyroelectricDetector Hafnia MultiferroicMaterials YttriaStabilizedZirconia Electrical&Electronics Typhimurium ScratchMode Materials BismuthFerrite LeakageCurrent LightEmiting PECurve NUS_NNI_Nanocore single_layer amplitude_modulation Conductive AFM nanomechanical Potential MESA structure TemperatureControlledAFM NUS_Physics BTO NCM VinylAlcohol