Potential Step Inorganic CuParticle 2d_materials HACrystal RedBloodCell fluoroalkane Polyvinylidene Temasek_Lab FM_SKPM thermal_property SrO HydroGel NeodymiumMagnets FrictionForce Fendb Foil sputter Beads 3-hexylthiophene blended polymers HDD HardDisk ForceMapping Carbon Molybdenum MESA structure NusEce Butterfly Annealing mfm_amplitude Plug temperature controller AFM Copper