Microchannel Boundary domain_switching GaAs ScanningTunnelingMicroscopy Al2O3 BiVO4 OxideLayer SmalScan Patterns light_emitting Hexylthiophene Hafnia OpticalWaveguides Biology fluoroalkane piezoelectric force microscopy Inorganic NCM\ Fendb mfm_amplitude HardDiskMedia MultiLayerCeramicCapacitor Wonseok Cancer Bacterium heterojunctions CaMnO3 ferromagnetic cooling Trench CarbonNanotube UnivCollegeLondon FM_KPFM HDD