ShenYang dielectric trench Optoelectronic exfoliate BTO MeltingPoint Boron Polyvinylidene_fluoride molecular_beam PS_LDPE self_assembly Heat Ferroelectric SetpointMode Reduction Ceramics HexagonalBoronNitride Workfunction hydrocarbon cannabidiol IcelandSpar ContactModeDot piezoelectric force microscopy BlockCopolymer Hair Iron Filter Electronics molecule LaAlO3 BoronNitride Scanning_Thermal_Microscopy dichalcogenide atomic_steps BaTiO3