Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques
Ruxandra Birjega,
Andreea Matei,
Valentina Marascu,
Angela Vlad,
Maria Daniela Ionita,
Maria Dinescu,
Rodica Zăvoianu,
Mihai Cosmin Corobea
Affiliations
Ruxandra Birjega
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Andreea Matei
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Valentina Marascu
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Angela Vlad
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Maria Daniela Ionita
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Maria Dinescu
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-16, 077125 Magurele-Bucharest, Romania
Rodica Zăvoianu
Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest, 4-12 Regina Elisabeta Av., S3, 030018 Bucharest, Romania
Mihai Cosmin Corobea
National Institute for Research and Development in Chemistry and Petrochemistry, 202 Spl.Independentei, 060021 Bucharest, Romania
We report on the investigation of stearic acid-layered double hydroxide (LDH) composite films, with controlled wettability capabilities, deposited by a combined pulsed laser deposition (PLD)-matrix-assisted pulsed laser evaporation (MAPLE) system. Two pulsed lasers working in IR or UV were used for experiments, allowing the use of proper deposition parameters (wavelength, laser fluence, repetition rate) for each organic and inorganic component material. We have studied the time stability and wettability properties of the films and we have seen that the morphology of the surface has a low effect on the wettability of the surfaces. The obtained composite films consist in stearic acid aggregates in LDH structure, exhibiting a shift to hydrophobicity after 36 months of storage.
