Heating self_healing StyreneBeads Yttria_stabilized_Zirconia TPU KPFM optoelectronics AtomicLayer dielectric trench IndiumTinOxide ConductiveAFM heterojunctions Materials Steps organic_polymer Friction BismuthFerrite Bacteria ScratchMode ULCA TiO2 Nanostructure LateralPFM Chungnam_National_University HumanHair Adhesion temp Galfenol EFM Optoelectonics PolymerBlend graphene_hybrid multi_layer Insulator Regensburg