IIT-chennai Piezoresponse Holes BariumTitanate Trench atomic_steps Grain IVSpectroscopy gallium_nitride Polyimide Ceramic Galfenol BFO FrequencyModulation thermal_property Annealing Multiferroic_materials Zagreb Led StainlessSteel Sphere MESA structure PhaseTransition semifluorinated_alkane UnivCollegeLondon PhaseChange Optoelectonics Composition Conductance HfO2 hard_disk Photovoltaics Fujian nanomechanical HighResolution