Dopped Sulfur organic_polymer Conductance Platinum BFO thermoplastic_elastomers Hydroxyapatite CancerCell Ptfe GaAs LFM INSP Ito HOPG Protein Ceramic Grain PECurve HfO2 TiO2 AM_SKPM BaTiO3 Ca10(PO4)6(OH)2 LateralForce Polyaniline Scanning_Thermal_Microscopy Polyurethane Scratch Plug Phase Indium_tin_oxide atomic_steps STO Wonseok