MagneticForceMicroscopy STM Spincast TempControl LeakageCurrent FAPbI3 Flake Friction Tungsten Pyroelectric oxide_layer Metal PyroelectricDetector ring shape LateralForceMicroscopy UTEM HydroGel MoS2 DIWafer Molybdenum PtfeMembrane ThermalProperties Metal-organicComplex StainlessSteel fluoroaalkane ThermalDetectors HexagonalBoronNitride AM_KPFM TappingMode SiliconCrystal Mechanical Defects Polarization Jason Formamidinium_lead_iodide