MBE Sulfur PiezoelectricForceMicroscopy PUR CHRYSALIS_INC Bacterium CompactDisk BismuthVanadate NUS Nanofiber medical StrontiuTitanate ScratchMode Grain MonoLayer Pyroelectric STO NTU ring shape NUS_NNI_Nanocore LithiumNiobate LiNbO3 SingleLayer Photovoltaics Modulus Ceramic FrictionForce Phase ContactMode ShenYang LogAmplifier MetalCompound Corrosion Tapping mono_layer