gallium_nitride IVSpectroscopy Growth Praseodymium single_layer MagneticPhase Wonseok PFM piezoelectric force microscopy Magnetic Force Microscopy Temasek_Lab Lateral Scanning_Thermal_Microscopy dielectric trench Perovskite BlockCopolymer HexagonalBoronNitride Titanate SKPM AEAPDES Semiconductor Copolymer Hole Growing ScratchMode AM_KPFM CNT Solar Au111 Forevision AtomicLayer Litho TransitionMetal Gallium LaAlO3