AtomicLayer LDPE SiWafer hydrocarbon Cross-section Bismuth NanoLithography Graphene MfmAmplitude DNA China SingleLayer Leakage FAFailureAnlaysis AdhesionEnergy Worcester_Polytechnic_Institute VerticalPFM Change mono_layer HBN ElectrostaticForceMicroscopy Metal Foil Thermoplastic_polyurethane Ni81Fe19 Mfm GalliumPhosphide mechanical property Sidewall InsulatorFilm Workfunction small_scan Molybdenum_disulfide Sperm Polyvinylidene_fluoride