Resistance TipBiasMode Potential HACrystal chemical_compound PhaseImaging MBE Ptfe Wafer Sperm TemperatureControllerAFM Gallium_Arsenide IISCBangalore Graphite Glass amplitude_modulation biocompatible NCM Fet TPU Thermal PinpointPFM PinPointMode kelvin probe force microscopy Global_Comm LiBattery OxideLayer Tin sulfide Zhi FuelCell LowDensityPolyethylene PDMS Deposition conductive PhaseTransition