Bacteria Wonseok Nickel self_healing HiVacuum CuSubstrate suspended_graphene Gold P3HT BoronNitride Roughness Ferrite Growing Zagreb AmplitudeModulation ito_film doped Yttria_stabilized_Zirconia Deposition Defect Hexacontane AIN Kevlar Vinylpyridine contact IISCBangalore SoftSample Etch OpticalWaveguide FrictionalForceMicroscopy light_emission WPlug Electrode rubber Korea