Zagreb MultiferroicMaterials Switching Roughness ImideMonomer Electronics Protein Cobalt amplitude_modulation BlockCopolymer epitaxy TungstenThinFilmDeposition STM blended polymers Wang HiVacuum CHRYSALIS_INC Magnetic Force Microscopy Temasek_Lab BismuthVanadate Polystyrene Pvdf Piezoelectric Celebration Sidewall H-BN Sapphire China thermal_conductivity Defect Thermoplastic_polyurethane molecular_beam Materials piezoelectric force microscopy Ni81Fe19