Plasma Processes and Polymers

Cover image for Vol. 12 Issue 9

Online ISSN: 1612-8869

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Recently Published Articles

  1. Nitrogen Incorporated Ultrananocrystalline Diamond Microstructures From Bias-Enhanced Microwave N2/CH4-Plasma Chemical Vapor Deposition

    Kamatchi Jothiramalingam Sankaran, Bohr-Ran Huang, Adhimoorthy Saravanan, Divinah Manoharan, Nyan-Hwa Tai and I.-Nan Lin

    Article first published online: 6 OCT 2015 | DOI: 10.1002/ppap.201500079

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    High-electrical conductivity and superior field emission properties of nitrogen incorporated ultrananocrystalline diamond films are achieved by the needle-like diamond grains encased by sp2-bonded graphitic grain boundaries.

  2. Thin Film Deposition on Open-Cell Foams by Atmospheric Pressure Dielectric Barrier Discharges

    Fiorenza Fanelli and Francesco Fracassi

    Article first published online: 5 OCT 2015 | DOI: 10.1002/ppap.201500150

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    Fluorocarbon coatings are deposited on open-cell polyurethane foams using an atmospheric pressure dielectric barrier discharge fed with helium and hexafluoropropene. The discharge is ignited both outside and inside the three-dimensional porous structure of the foam, so that thin film deposition can be achieved on both its outer and inner surfaces.

  3. He/O2 Atmospheric Pressure Plasma Jet Treatments of PCL Scaffolds for Tissue Engineering and Regenerative Medicine

    Ilaria Trizio, Francesca Intranuovo, Roberto Gristina, Giorgio Dilecce and Pietro Favia

    Article first published online: 5 OCT 2015 | DOI: 10.1002/ppap.201500104

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    An atmospheric pressure plasma-jet (APPJ) fed with He/O2 is employed for treatment of porous poly-ɛ-caprolactone scaffolds. The polar O-containing functionalities grafted via-plasma onto the surfaces of scaffolds are revealed by means of XPS and water absorption measurements.Viability assays and morphology analysis show the enhanced cell growth of Saos-2 cells on APPJ treated scaffolds.

  4. Treatment of Glycine and Proline in Late Ar-O2 Afterglow

    Anna V. Nominé, Marcio Mafra, Gilles Frache and Thierry Belmonte

    Article first published online: 5 OCT 2015 | DOI: 10.1002/ppap.201500126

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    Interaction of reactive oxygen species produced by a microwave plasma with two amino-acids, glycine, and proline, is shown to involve O(3P) atoms for the former, and O(3P) atoms together with likely the singlet state of O2 for the latter. Ozone does not seem to play any role. Complete etching of both amino-acids is shown to be possible at temperature far beyond their melting point.

  5. Synergistic Inhibition of Tumor Cell Proliferation by Cold Plasma and Gemcitabine

    Kai Masur, Magdalena von Behr, Sander Bekeschus, Klaus-Dieter Weltmann, Christine Hackbarth, Claus-Dieter Heidecke, Wolfram von Bernstorff, Thomas von Woedtke and Lars Ivo Partecke

    Article first published online: 30 SEP 2015 | DOI: 10.1002/ppap.201500123

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    This study presents experimental data on a combined treatment of cancer cells with cold atmospheric pressure plasma (CAP) and the antitumor drug gemcitabine (GB). Our results indicate a synergistic effect of plasma and gemcitabine, which specifically hits tumor cells more effectively than healthy fibroblasts with identical genetic background.