Copper FrictionForce Worcester_Polytechnic_Institute Non-ContactMode Modulus atomic_steps IRDetector F14H20 hetero_structure VortexCore Strontium Lateral CuSubstrate Nanopattern MoirePattern Morphology ThermalProperties Styrene Organic BariumTitanate Neodymium Optoelectonics Sphere Plug MBE GranadaUniv fluoroalkane Polystyrene dielectric trench LateralForce Aggregated_molecules NCM\ Chemical Vapor Deposition Au111 strontiu_titanate