Regensburg molecular_beam ElectrostaticForceMicroscopy Implant UnivOfMaryland Conductivity TipBiasMode PtfeMembrane Growing Chloroform Polymer MagneticArray flakes Collagen HfO2 OrganicCompound Defect Mechanical Yeditepe_University Glass China Mechinical Tungsten Strontium Self-assembledMonolayer atomic_layer graphene_hybrid Yeditepe Aggregated_molecules Pinpoint pinpoint mode PolyvinylAcetate polymeric_arrays PolyvinylideneFluoride STM