NUS temperature controller AFM TCS MagneticForceMicroscopy 2dMaterials Cell CopperFoil Magnetic Solution IndiumTinOxide FrictionalForce ContactMode Metal-organicComplex Lattice Led semifluorinated alkane ito_film tip_bias_mode Water CuFoil alkanes Litho TPU Lateral Etch University_of_Regensburg Tape Bmp MagneticForce Fluoride PUR flakes Hexacontane Nickel aluminum_nitride