Results 141 to 150 of about 20,232 (192)
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Inferring wettability of heterogeneous surfaces by ToF-SIMS
Journal of Colloid and Interface Science, 2008Time-of-flight secondary ion mass spectrometry (ToF-SIMS) has been examined as a possible predictive tool for surface wettability. Heterogeneous surfaces were prepared with hydrophilic and hydrophobic regions of known surface coverage using self-assembled monolayers. The surface coverage of each component was then correlated with ToF-SIMS fragmentation
Craig Priest +2 more
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ToF‐SIMS of polyphosphate glasses
Surface and Interface Analysis, 2012The increasing interest in phosphate glasses is due to the fact that they are considered to be bioactive functional materials in applications such as hard and soft tissue engineering and also that they possess interesting optical properties.
Crobu M, ROSSI, ANTONELLA, Spencer ND
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Biomedical studies by TOF-SIMS imaging
Biointerphases, 2014Imaging by secondary ion mass spectrometry coupled to time-of-flight mass analysis (TOF-SIMS) is a method of which the applications have greatly increased since 10 years. Taking advantage of the development of cluster ion sources, TOF-SIMS offers images of molecular ions at a micrometer lateral resolution or slightly below and does not require complex ...
Claudia, Bich +2 more
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Segment fusion of ToF-SIMS images
Biointerphases, 2016The imaging capabilities of time-of-flight secondary ion mass spectrometry (ToF-SIMS) have not been used to their full potential in the analysis of polymer and biological samples. Imaging has been limited by the size of the dataset and the chemical complexity of the sample being imaged.
Tammy M, Milillo +4 more
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TOF‐SIMS characterization of an aluminovanadate oxide catalyst [PDF]
Surface and Interface Analysis, 2007 Abstract Time‐of‐flight Secondary Ion Mass Spectrometry (TOF‐SIMS) has been employed to characterize the surface physical and chemical state of aluminovanadate oxide catalyst precursors (‘VAlO’) precipitated at different pH values in the range of 5.5…10. The reference oxide V 2
Chenakin, Sergiy +2 more
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Perfluoropolyethers: Analysis by TOF-SIMS
Macromolecules, 1996TOF-SIMS spectra of the following perfluoropolyethers (PFPEs) were analyzed: Demnum-S, Krytox, Fomblin-Z, perfluoropoly(dioxolane), perfluoropoly(tetramethylene oxide), and perfluoropoly(ethylene oxide). In each case, the PFPE produced an intense negative ion spectrum with simple patterns persisting into the high-mass region surpassing the mean MW of ...
A. M. Spool, Paul H. Kasai
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Surface and Interface Analysis, 2002
Abstract Nucleic acid chips are based on the method of sequencing by hybridization, where unknown DNA fragments are hybridized to complementary nucleic acid sequences that are immobilized on a solid surface in an array format. One novel approach is to use peptide nucleic acid (PNA) biosensor chips.
H. F. Arlinghaus +5 more
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Abstract Nucleic acid chips are based on the method of sequencing by hybridization, where unknown DNA fragments are hybridized to complementary nucleic acid sequences that are immobilized on a solid surface in an array format. One novel approach is to use peptide nucleic acid (PNA) biosensor chips.
H. F. Arlinghaus +5 more
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Applied Surface Science, 2006
A study is presented of the factors affecting the calibration of the mass scale for time-of-flight SIMS (TOF-SIMS). The effect of the ion kinetic energy, emission angle and other instrumental operating parameters on the measured peak position are determined. This shows clearly why molecular and atomic ions have different relative peak positions and the
F.M. Green, I.S. Gilmore, M.P. Seah
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A study is presented of the factors affecting the calibration of the mass scale for time-of-flight SIMS (TOF-SIMS). The effect of the ion kinetic energy, emission angle and other instrumental operating parameters on the measured peak position are determined. This shows clearly why molecular and atomic ions have different relative peak positions and the
F.M. Green, I.S. Gilmore, M.P. Seah
openaire +1 more source
Use of TOF-SIMS in Vascular Biology
2013Secondary ion mass spectrometry is a technique used for surface analysis. The recent introduction of metal cluster ionization sources opened the possibility to probe biological tissues, due to its reduced in-source fragmentation. Despite its limitations in mass range of the molecules analyzed, a combination of minimal sample processing, sensibility ...
Mas, Sebastian +2 more
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Genome diagnostics with TOF-SIMS
Applied Surface Science, 2003Abstract A novel deoxyribonucleic acid (DNA) sequencing method is described that uses peptide nucleic acid (PNA) biosensor chips. PNA is a synthesized DNA analog in which both the phosphate and the deoxyribose of the DNA backbone are replaced by polypeptides. The hybridization properties of PNA to DNA are comparable to those of DNA to DNA.
H.F. Arlinghaus +3 more
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