AtomicSteps Co/Cr/Pt Force-distance LateralForce Magnetic Force Microscopy China LogAmplifier SrO Wonseok P3HT MESA structure Sperm Polyvinylidene_fluoride HDD ThermalProperties ForceVolumeMapping Heat Lattice Conductive AFM Butterfly OxideLayer Oxide optoelectronics Spain gallium_nitride Sio2 H-BN WS2 high_resolution TPU IRDetector fluorocarbon Lateral DeoxyribonucleicAcid Hexylthiophene