epitaxy UnivCollegeLondon SiliconCrystal Water Ecoli flakes AlkaneFilm Nanostructure Co/Cr/Pt cannabidiol DeflectionOptics SKPM Beads Spincast molecules TPU Boron PhaseChange Dr.JurekSadowski neodymium_magnets Barium_titanate amplitude_modulation MolybdenumDisulfide Gallium_Arsenide Fe_film Polystyrene FrictionForce SPMLabs IcelandSpar nanobar Mobile nanomechanical Magnetic Force Microscopy MoS2 Reading