Plasma Processes and Polymers

Cover image for Vol. 11 Issue 4

Online ISSN: 1612-8869

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Recently Published Articles

  1. Interactions of Serum Derived Proteins with Sub-Micrometer Structured Surfaces

    Maria Jesús Pérez-Roldan, Antonietta Parracino, Giacomo Ceccone, Pascal Colpo and François Rossi

    Article first published online: 22 APR 2014 | DOI: 10.1002/ppap.201300174

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    This paper shows that the combination of plasma polymerization and electron beam lithography techniques allows the production of chemical patterns at sub-micrometer scale with a clear chemical contrast (bio and anti adhesives properties.) Furthermore, by modulating the energy and the doses of the electron beam, direct e-beam writing on plasma deposited poly(ethylene-oxide) layer allows the tuning of its bio adhesive property as shown by surface plasmon resonance imaging analysis with human serum albumin proteins.

  2. Redox-Based Assay for Assessment of Biological Impact of Plasma Treatment

    Kristian Wende, Stephan Reuter, Thomas von Woedtke, Klaus-Dieter Weltmann and Kai Masur

    Article first published online: 22 APR 2014 | DOI: 10.1002/ppap.201300172

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    A straightforward and simple method to estimate the biological value of non-thermal plasma sources is presented. The assay is intended as a reference method for use in different labs and various plasma sources. Both adherent and non-adherent mammalian cells can be tested for their proliferation and metabolic in a fast, sensitive, and cost effective way. Here, we describe the dos and don'ts and present example results using an array of plasma sources.

  3. On the Deposition Rates of Magnetron Sputtered Thin Films at Oblique Angles

    Rafael Alvarez, Jose M. Garcia-Martin, Maria C. Lopez-Santos, Victor Rico, Francisco J. Ferrer, Jose Cotrino, Agustin R. Gonzalez-Elipe and Alberto Palmero

    Article first published online: 17 APR 2014 | DOI: 10.1002/ppap.201300201

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    A simple formula relating the deposition rates for the magnetron sputtered thin films at oblique angles, the background pressure of the gases and the tilt angles of the substrate is derived for general conditions. This formula is experimentally tested, finding a good agreement in all the studied cases, even in conditions where the Keller–Simmons formula is not applicable.

  4. Surface Functionalization by Plasma Treatment and Click Chemistry of a New Family of Fluorinated Polymeric Materials for Microfluidic Chips

    Yoann Ladner, Fanny D'Orlyé, Camille Perréard, Bradley Da Silva, Cédric Guyon, Michael Tatoulian, Sophie Griveau, Fethi Bedioui and Anne Varenne

    Article first published online: 17 APR 2014 | DOI: 10.1002/ppap.201300120

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    A method based on plasma polymerization followed by surface “click” chemistry was developed for the robust functionalization of THV material. The THV surface was characterized in terms of stability, thickness, homogeneity and chemical composition. A fluorescent dye was then successfully immobilized on these surfaces by click reaction. This process opens the way to incorporate different functional groups on THV, for the development of THV analytical microchips

  5. Morphology Transformations of Platelets on Plasma Activated Surfaces

    Martina Modic, Ita Junkar, Karin Stana-Kleinschek, Rok Kostanjšek and Miran Mozetič

    Article first published online: 9 APR 2014 | DOI: 10.1002/ppap.201400001

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    RF oxygen plasma treatment is used for surface modification of polyethylene terephthalate polymer surface. Newly acquired surface properties analyzed with XPS, WCA, and AFM show significant improvement of hemocompatibility. In contact with whole human blood, SEM images revealed reduced number of activated adhered platelets on the surface of plasma treated polymer.