Contact
    Start Publications Kaolinite Thin Films Grown by Pulsed Laser Deposition and ...
    ←  Publication Finder
    Attension

    Kaolinite Thin Films Grown by Pulsed Laser Deposition and Matrix Assisted Pulsed Laser Evaporation

    Year: 2022

    Journal: Nanomaterials, Volume 12, FEB

    Authors: Dumitrescu, Luminita Nicoleta; Ionita, Eusebiu-Rosini; Birjega, Ruxandra; Lazea-Stoyanova, Andrada; Ionita, Maria-Daniela; Epurescu, George; Banici, Ana-Maria; Brajnicov, Simona; Andrei, Florin; Matei, Andreea

    Organizations: Executive Agency for Higher Education, Research, Development and Innovation Funding (UEFISCDI) [PN-III-P2-2.1-PED-2019-0103, PED 517/2020]

    Keywords: laser processing; kaolinite; lamellar materials; thin films

    In this work, thin films of lamellar clays were deposited by laser techniques (matrix assisted pulsed laser evaporation (MAPLE) and pulsed laser deposition (PLD)). The focus of this paper is the optimization of deposition parameters for the production of highly oriented crystalline films. The films were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and scanning electron microscopy (SEM). Contact angle measurements were employed to identify the wetting properties of the deposited thin films. Hydrophobic to superhydrophilic films can be prepared by using different deposition techniques and deposition parameters. MAPLE led to superhydrophilic films with contact angles in the range 4 degrees-8 degrees, depending on the microstructure and surface roughness at micro and nano scale. The 1064 nm PLD had a high deposition rate and produced a textured film while at lambda = 193 nm an extremely thin and amorphous layer was depicted. Oriented kaolinite films were obtained by MAPLE even at 5 wt.% kaolinite in the target.
    View publication