contact GaN Lattice Water LaAlO3 PvdfBead HighAcpectRatio MagneticForce self_assembly CaMnO3 MagneticArray Ecoli Conductive AFM Led Holes Sio2 FM-KPFM Protein AM_KPFM IVSpectroscopy Hole Device Electronics Barium_titanate Ceramics Polymer oxide_layer Polydimethylsiloxane Jason India CastIron SKKU Copolymer Roughness FAFailureAnlaysis