Ceramic Workfunction Carbon Pinpoint PFM Christmas WS2 LateralForce neodymium_magnets Chemical_Vapor_Deposition Mfm BloodCell Crystal 2dMaterials Worcester_Polytechnic_Institute PinpointNanomechanicalMode Thermoplastic_polyurethane mechanical_property SurfaceOxidation LithiumNiobate VortexCore MLCC FrictionalForce Conductance PolymerBlend high_resolution Platinum ItoGlass Sperm Ni-FeAlloy organic_polymer contact UnivCollegeLondon polymeric_arrays PS_LDPE Alkane