nanomechanical Optic TyphimuriumBiofilm Gallium SKPM Grain Implant ImideMonomer Adhesion NtuEee PhthalocyaninePraseodymium Mobile ThinFilm molecules pinpoint mode PANI CopperFoil Calcite SThM AIN HOPG self-assembly Holes Ecoli HardDisk NTU phase_change KelvinProbeForceMicroscopy Biofilm Wang Battery Crystal Semiconductor single_layer Phosphide