Incident Angle Dependence in Polymer TOF-SIMS Depth Profiling with C60 Ion Beams
نویسندگان
چکیده
منابع مشابه
Depth profiling of peptide films with TOF-SIMS and a C60 probe.
A buckminsterfullerene ion source is employed to characterize peptide-doped trehalose thin films. The experiments are designed to utilize the unique sputtering properties of cluster ion beams for molecular depth profiling. The results show that trehalose films with high uniformity can be prepared on Si by a spin-coating technique. Bombardment of the film with C60+ results in high quality time-o...
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A complex poly(vinylidene difluoride) (PVdF)/poly(methyl methacrylate) (PMMA) based coil coating formulation has been investigated using time-of-flight SIMS (ToFSIMS). Employing a Bi3 + analysis source and a Buckminsterfullerene (C60) sputter source, depth profiles were obtained through the polymeric materials in the outer few nanometres of the PVdF topcoat. These investigations demonstrate tha...
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Peptide-doped trehalose thin films have been characterized by bombardment with energetic cluster ion beams of C60+ and Aux+ (x = 1, 2, 3). The aim of these studies is to acquire information about the molecular sputtering process of the peptide and trehalose by measurement of secondary ion mass spectra during erosion. This system is important since uniform thin films of approximately 300 nm thic...
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The bombardment of a 26 nm poly(methyl methacrylate) (PMMA) film has been studied as a model for depth profiling of polymeric samples using a newly developed C60 þ ion source. Experiments were conducted on a ToF-SIMS instrument equipped with C60 þand Gaþ ion sources. A focused dc C60 þ ion beam was used to etch through the polymer sample at specified time intervals. Subsequent spectra were reco...
متن کاملC60-ToF SIMS imaging of frozen hydrated HeLa cells.
Sample preparation continues to be a major challenge for secondary ion mass spectrometry studies of biological materials. Maintaining the native hydrated state of the material is important for preserving both chemical and spatial information. Here, we discuss a method which combines a sample wash and dry protocol discussed by Berman et al1 (1) followed by plunge freezing in liquid ethane for a ...
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ژورنال
عنوان ژورنال: e-Journal of Surface Science and Nanotechnology
سال: 2009
ISSN: 1348-0391
DOI: 10.1380/ejssnt.2009.878