HfO2 PhaseChange Worcester_Polytechnic_Institute HDD Boron Vacuum tip_bias_mode Ananth SAM self_assembly lift_mode Patterns plastic BiasMode OpticalModulator Fujian Pyroelectric Thermal Graphene Lateral_Force_Microscopy Iron Molybdenum_disulfide Ptfe SolarCell Plug single_layer INSP FastScan self-assembly HafniumDioxide Praseodymium SThM NUSNNI Phenanthrene Semiconductor