DeflectionOptics Subhajjit Ferroelectric PinpointPFM mono_layer Indent SKKU LateralForce LiBattery Leakage biocompatible Silver FM-KPFM VortexCore Ito PhthalocyaninePraseodymium Zagreb Temasek_Lab align mfm_amplitude MultiferroicMaterials OpticalWaveguide TCS Piranha non_contact Conductive AFM Hexylthiophene C60H122 Holes PolyimideFilm PFM strontiu_titanate CancerCell margarine I-VSpectroscopy