DOE Gold food Platinum Bacteria Domain piezoelectric force microscopy Hole Neodymium Corrosion PpLdpe HardDisk self-assembly epitaxy Reading block_copolymer SoftSample SFAs GalliumPhosphide HexagonalBoronNitride Self-assembledMonolayer Biofilm GaN BiasMode temp_control MoirePattern Friction PFM CP-AFM HBN PtfeMembrane ThinFilm Metal ScanningSpreadingResistanceMicroscopy Hexacontane