Vac oxide_layer Beads Forevision Lateral Layer Vinylpyridine LiftHeight Ananth Gong PECurve SFAs molecular_beam HfO2 SRAM atomic_steps Pinpoint Topography SAM MultiferroicMaterials Collagen Perovskite Trench FFM Lift Device cannabis nanomechanical MolybdenumDisulfide self-assembly SICM PhaseChange STM NiFe HexagonalBN