CopperFoil I-VSpectroscopy PolyvinylideneFluoride Optoelectonics Strontium cannabis DIWafer HighAspect EFMAmplitude INSP non_contact WS2 self-assembled_monolayer 2d_materials LateralForceMicroscopy Phosphide Magnetic Force Microscopy Boron Styrene SiWafer piezoelectric force microscopy heterojunctions semifluorinated alkane OpticalModulator Hexatriacontane HardDisk semifluorinated_alkanes CHRYSALIS_INC kelvin probe force microscopy SicMosfet Electical&Electronics polyvinyl acetate optoelectronics IIT-chennai PhaseImaging