ForceDistanceSpectroscopy SelfAssembly TCS Conductive AFM Ecoli HBN Gold IndiumTinOxide silicon_carbide non_contact Conductivity temperature controller AFM LateralPFM nanomechanical Molybdenum ShenYang Aggregated_molecules Reduction CaMnO3 NeodymiumMagnets PolyvinylideneFluoride CuSubstrate DOE Pinpoint Crystal SolarCell hard_disk ContactMode Ananth TPU NTU semifluorinated_alkanes Zagreb electrospinning PMNPT