SurfaceChange mechanical property AtomicSteps hard_disk align Floppy CVD mechanical_property HiVacuum University_of_Regensburg Butterfly RedBloodCell NUSNNI CaMnO3 Array PetruPoni_Institute kelvin probe force microscopy Calcite Sadowski rubber Chrome TyphimuriumBiofilm Treatment cooling Device Sphere pulsed_laser_deposition SKPM NeodymiumMagnets NtuEee Ceramic Gold Nanostructure Conductivity India