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|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 Ondrej; BENEDIKT Jan; SIRGHI Lucel; REUTER Rudiger; RAUSCHER Hubert; VON KEUDELL Achim; ROSSI Francois|
|Citation:||PLASMA PROCESSES AND POLYMERS vol. 6 no. 4 p. 255-261|
|Publisher:||WILEY-V C H VERLAG GMBH|
|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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