2d_materials self_healing Friction Aggregated_molecules Ni81Fe19 Cobalt NUS_NNI_Nanocore Calcite SingleLayer LifeScience Magnetic Force Microscopy PVA PvdfFilm Zagreb ConductiveAFM ForceVolume HDD LFM MonoLayer PolyimideFilm P3HT DiffractiveOpticalElements DOE PtfeMembrane TyphimuriumBiofilm Fendb IRDetector ring shape PMNPT electrospinning Hafnium_dioxide ForceVolumeMapping #Materials temp_control Titanate