mechanical property Collagen Ucl TPU self-assembled_monolayer sputter Hydroxyapatite Film align alkanes Sapphire MagneticPhase polymeric_arrays doped Lattice ElectroChemical InLiquid IISCBangalore Annealing piezoelectric force microscopy Sidewall DLaTGS Nanotechnology Nanofiber Lanthanum_aluminate Aggregated_molecules BismuthVanadate HexagonalBoronNitride C60H122 pulsed_laser_deposition InsulatorFilm KPFM multi_layer flakes LFM