Title: Removal of Model Proteins Using Beams of Argon Ions, Oxygen Atoms and Molecules: Mimicking the Action of Low-Pressure Ar/O2 ICP Discharges
Authors: KYLIAN OndrejBENEDIKT JanSIRGHI LucelREUTER RudigerRAUSCHER HubertVON KEUDELL AchimROSSI Francois
Citation: PLASMA PROCESSES AND POLYMERS vol. 6 no. 4 p. 255-261
Publisher: WILEY-V C H VERLAG GMBH
Publication Year: 2009
JRC Publication N°: JRC56626
ISSN: 1612-8850
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC56626
DOI: 10.1002/ppap.200800199
Type: Articles in Journals
Abstract: The action of Ar/O2 plasmas with proteins is mimicked by employing a particle beam experiment with individually controllable and absolutely calibrated sources of O atoms/O2 molecules and of argon ions. It is demonstrated that beams of thermal O atoms and of O2 molecules with fluences up to jo= 8.6×1018 cm-2 and jo2= 5.4×1020 cm-2 have no measurable effect on the proteins at room temperature, whereas the combination of an O/O2 beam and of an 100 eV Ar+ ion beam induces very efficient protein removal, which is accompanied by a significant increase of their surface roughness. These observations are attributed to the process of chemical sputtering caused by the simultaneous impact of incident radicals and energetic ions. A figure is presented.
JRC Institute:Institute for Health and Consumer Protection

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