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    Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

    Year: 2020

    Journal: Molecules, Volume 25, SEP

    Authors: Birjega, Ruxandra; Matei, Andreea; Marascu, Valentina; Vlad, Angela; Ionita, Maria Daniela; Dinescu, Maria; Zavoianu, Rodica; Corobea, Mihai Cosmin

    Organizations: Romanian Ministry of Research and Innovation, CCCDI-UEFISCDI within PNCDI III programConsiliul National al Cercetarii Stiintifice (CNCS)Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI) [PN-III-P1-1.2-PCCDI-2017-0387/80PCCDI]

    Keywords: thin films; laser deposition; layered double hydroxides; stearic acid

    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.
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