Permalloy sputter thermal_property organic_polymer Melt FrictionalForce biocompatible AIN Beads Hydroxyapatite Electrical&Electronics Mapping TriGlycineSulphate Ni81Fe19 Wafer Vortex Subhajjit medical oxide_layer Lanthanum_aluminate Annealing Organic MetalCompound Hexylthiophene Ecoli Ram KelvinProbeForceMicroscopy Phase margarine gallium_nitride Trench vertical_PFM Ni-FeAlloy block_copolymer DOE