flakes Tungsten Tin disulfide AdhesionForce Sapphire nanobar polyvinyl acetate Blood neodymium_magnets Butterfly SFAs Sidewall Temasek_Lab HydroGel STO Molybdenum_disulfide HardDisk cross section Composition Polytetrafluoroethylene Chrome SmalScan BariumTitanate PMNPT Regensburg Austenite ScanningSpreadingResistanceMicroscopy Lattice Phase ULCA Thermal hetero_structure Ananth LiquidCrystal FFM