self_assembly DeoxyribonucleicAcid ForceVolumeImage C_AFM Platinum Biofilm IIT-chennai ito_film HydroGel vertical_PFM Pzt FFM INSPParis amplitude_modulation Cobalt Hexatriacontane PFM NanoLithography Reading FAPbI3 Electrical&Electronics Gallium_Arsenide Ptfe SiliconCrystal Mechanical&nanotechnology Boundary Workfunction Water MagneticForce ScratchMode ContactMode Polyvinylidene BismuthFerrite heterojunctions #Materials