Gallium_Arsenide Calcium Non-ContactMode MechanicalProperties Piezoresponse LMF Perovskite ImideMonomer hetero_structure Holes PVAC Mfm Transparent PtfeFilter 2-vinylpyridine PS_LDPE ForceVolumeImage domain_switching HanyangUniv BFO TiO2 Roughness electrospinning Sperm Fujian TipBiasMode I-VSpectroscopy CuParticle LiftMode Treatment FailureAnlaysis amplitude_modulation VerticalPFM solar_cell ferromagnetic