Nanocolumnar Coatings: Sustainable Manufacturing and Applications in Biomedicine

Author(s): Jose Miguel Garcia-Martin

In this lecture I will show how nanocolumnar coatings are manufactured by oblique deposition using magnetron sputtering, see Figure. This technique is environmentally friendly, since it is carried out at RT in a single step with low energy consumption and does not involve chemical products (therefore, without recycling problems). It will be seen that the formation of nanocolumns is the result of the effects of atomic shadowing when the atoms reach the surface along an inclined direction and kineticenergy- induced relaxation processes. Depending on various parameters (such as gas pressure, the angle of inclination of the substrate and its possible rotation), the nanocolumnar structure can be controlled, giving rise to different properties