organic_polymer ThermalConductivity PS_PVAC Sperm CancerCell Korea Ucl Morphology mono_layer HACrystal PolycrystallineFerroelectricBCZT HydroGel NusEce fluorocarbon OrganicSemiconductor hetero_structure norganic Temasek_Lab Fet ElectrostaticForceMicroscopy fluoroaalkane Nanotechnology Yeditepe_University Bacterium DomainSwitching Worcester_Polytechnic_Institute WWafer Al2O3 mfm_amplitude LiftMode HafniumDioxide LFM H-BN cross section FrictionalForce