oxide_layer Copolymer Mechanical Organic CeNSE_IISc Insulator Heating ring shape BaTiO3 Ucl atomic_steps SiWafer Polydimethylsiloxane ScanningKelvinProbeMicroscopy Scratch ForceMapping Annealing Mapping CastIron Dental mechanical_property Vacuum InLiquid ContactModeDot atomic_layer Hexatriacontane HydroGel SrO Graphene hard_disk_media semifluorinated_alkane Optoelectonics Laser biocompatible LateralPFM