Liquid organic_polymer 2-vinylpyridine HexagonalBN PhaseTransition KelvinProbeForceMicroscopy Chromium Forevision I-VSpectroscopy Formamidinium_lead_iodide YszSubstrate AtomicSteps Zhi Hexatriacontane Logo BismuthFerrite WS2 Thermoplastic_polyurethane Piranha tip_bias_mode Piezoresponse Leakage Iron Chemical Vapor Deposition TiO2 DNAProtein DLaTGS Jason Kevlar PhthalocyaninePraseodymium C36H74 Domain mechanical property Sperm Chungnam_National_University