C60H122 oxide_layer Au111 IcelandSpar layers Sphere Polypropylene FrictionalForce Cobalt-dopedIronOxide electrospinning OpticalElement PS_LDPE cross section Ca10(PO4)6(OH)2 flakes temp Nickel Polydimethylsiloxane HanyangUniv CaMnO3 NeodymiumMagnets HOPG FrictionForce ThermalConductivity Potential HumanHair Patterns GalliumPhosphide RedBloodCell Ptfe silicon_carbide Sapphire Step amplitude_modulation lithography