Plasma Processes and Polymers
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Online ISSN: 1612-8869
Materials Science Weekly Newsletter
Recently Published Articles
- Applying the Macroscopic Kinetic Approach to Plasma Polymerization to the Plasma Surface Modification of Micropowders: Attempt of Correlating Powder Flowability and Plasma Process Parameters
Vito Roberto Giampietro, Christian Roth, Michal Gulas, Vanessa Wood and Philipp Rudolf von Rohr
Article first published online: 4 AUG 2015 | DOI: 10.1002/ppap.201500056
A fast plasma surface-modification process with a tubular inductively-coupled RF plasma reactor is utilized to improve the flowability of cohesive graphite micropowder by depositing a non-continuous coating on the micropowder surface. A possible model based on a quasi-Arrhenius equation correlating flowability and user-set macroscopic plasma-process parameters is proposed and discussed.
- Nitrogen Radical and Plasma Diagnostics in Dual Frequency Hybrid Plasmas to Investigate N2/SiH4 PECVD Process
Bibhuti Bhusan Sahu, Jeon Geon Han, Kyung Sik Shin and Masaru Hori
Article first published online: 31 JUL 2015 | DOI: 10.1002/ppap.201500116
Plasmas are high-energy systems with multiple species like electrons, ions, neutral atom, neutral molecules, radicals, etc. To understand the film growth mechanism in situ diagnostics is necessary to study the interaction of plasma with the electrodes, wall, and substrate. Plasma and radical control by suitable diagnostics can be useful for getting the desired film properties.
- Fundamentals and Applications of Reflection FTIR Spectroscopy for the Analysis of Plasma Processes at Materials Interfaces
Guido Grundmeier, Achim von Keudell and Teresa de los Arcos
Article first published online: 20 JUL 2015 | DOI: 10.1002/ppap.201500087
Plasma processes are widely used for the deposition of thin films and/or the functionalization of material surfaces and interfaces ranging from inorganic to organic structures. The characterization of such plasma-modified surfaces is challenging and most efficiently performed by optical methods. The aim of this review is to present both the fundamentals and selected experimental approaches of in situ reflection Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy methods with a focus on the application in plasma interface chemistry.
- Spectroscopic and Microscopic Investigations of Degradation Processes in Polymer Surface-Near Regions During the Deposition of SiOx Films
Felix Mitschker, Jan Dietrich, Berkem Ozkaya, Teresa de los Arcos, Ignacio Giner, Peter Awakowicz and Guido Grundmeier
Article first published online: 20 JUL 2015 | DOI: 10.1002/ppap.201500085
Oxidative degradation of polymer surface-near regions during exposure to plasma deposition processes of silicon oxide is monitored as a function of absolutely quantified atomic oxygen fluences. Determination of atomic oxygen fluence is performed by means of quantitative optical emission spectroscopy. Self-assembled monolayers that mimic an aliphatic polymer stay intact if the atomic oxygen fluence is below 1.0 · 1022 m−2.
- Toward a Better Understanding of the Influence of the Hydrocarbon Precursor on the Mechanical Properties of a-C:H Coatings Synthesized by a Hybrid PECVD/PVD Method
Damien Thiry, Aurore De Vreese, Fabian Renaux, Julien L. Colaux, Stéphane Lucas, Yannick Guinet, Laurent Paccou, Etienne Bousser and Rony Snyders
Article first published online: 17 JUL 2015 | DOI: 10.1002/ppap.201500050
The purpose of this work is to enlarge the comprehension about the influence of the chemical precursor (CH4 vs. C2H2) on the mechanical properties of amorphous hydrogenated carbon film (a-C:H) synthesized by a PECVD/PVD hybrid method. The whole set of our results enables to highlight the influence of other factors (e.g., cross-linking degree, branching character) than the sp3 and hydrogen content for determining the hardness of the a-C:H layers.