Modification of Octadecylphosphonic acid Langmuir-Blodgett film on Aluminium oxide surface by hydrogen ion bombardment and its characterization

We report surface modification with kinematics driven reaction on uniform and well-ordered Octadecylphosphonic acid Langmuir-Blodgett on aluminium oxide surface and characterized few of its mechanical properties using different surface analysis techniques. The hyperthermal hydrogen induced collision (HHIC) approach with low proton energy can induce the hydrocarbon long chain chemical bonding and the actual ordered LB lattice into an array of clusters of the OPA virgin film. By enhancing the kinematics-driven reaction fluence at constant bombardment energy, the nanocluster growth of OPA coated surface can be controlled on aluminum oxide substrate. Following this, in a specified reaction condition with a controllable degree of cross linking, this hyper thermal hydrogen-driven reaction can modify the cluster shape and consequently enhance the mechanical strength as well. The OPA Langmuir-Blodgett film on oxidized A1 was the only system stable enough to retain a cohesive and smooth molecular layer after the cross-linking process in compared with Muscovite mica and silicon oxide substrates.