MeltingPoint HOPG neodymium_magnets PolyStylene ForceDistanceSpectroscopy Sperm plastics self-assembly Patterns LithiumNiobate SThM FrictionalForce Mosfet NCM GaAs India Platinum Cell DentalProsthesis ContactMode Scratch Laser organic_polymer LiftHeight Water molecular_beam Stiffness Calcium Temperature FrequencyModulation DIWafer PUR contact TyphimuriumBiofilm FM_SKPM