MESA structure kelvin probe force microscopy FM_KPFM LFM Bio Optic Mechanical LightEmiting Hair atomic_steps MLCC StainlessSteel Fujian P3HT SiWafer Austenite HumanHair Formamidinium_lead_iodide TriGlycineSulphate lift_mode Blood Defects ContactModeDots Hole fe_nd_b ThinFilm Organic DLaTGS SRAM CHRYSALIS_INC Glass Morphology Resistance Fe_film HDD