Multivariate ToF-SIMS image analysis of polymer microarrays and protein adsorption
نویسندگان
چکیده
منابع مشابه
Development of PNA microarrays for gene diagnostics with TOF-SIMS
We have used time-of-flight secondary ion mass spectrometry (TOF-SIMS) to examine different immobilization processes of peptide nucleic acid (PNA) and their influence on the hybridization efficiency of unlabeled DNA fragments to complementary PNA. Two different approaches have been used to immobilize PNA onto Au surfaces. One method was to immobilize thiolated PNA in a single step reaction to t...
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The surface properties of polymer blends are important for many industrial applications. The physical and chemical properties at the surface of polymer blends can be drastically different from those in the bulk due to the surface segregation of the low surface energy component. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary mass spectrometry (ToF-SIMS) have been widely used...
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In this paper we discuss the application of ToF-SIMS with an Au3 + primary ion beam, combined with principal components analysis (PCA) and discriminant function analysis (DFA) for the identification of individual strains of two Bacillus species. The ToF-SIMS PC-DFA methodology is capable of distinguishing bacteria at the strain level based on analysis of surface chemical species. By classifying...
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Advanced data analysis tools are crucial for the application of ToF-SIMS analysis to biological samples. Here, we demonstrate that by using a training set approach principal components analysis (PCA) can be performed on large 3D ToF-SIMS images of neuronal cell cultures. The method readily provides access to sample component information and significantly improves the images' signal-to-noise rat...
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Multivariate analysis (PC-CVA and GA-CVA) was carried out on time-of-flight secondary ion mass spectra (ToF-SIMS) derived from 16 bacterial isolates associated with urinary tract infections, with an objective of extracting the spectral information relevant to their species-level discrimination. The use of spectral pre-processing, such as removal of the dominant peaks prior to analysis and analy...
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ژورنال
عنوان ژورنال: Biointerphases
سال: 2015
ISSN: 1934-8630,1559-4106
DOI: 10.1116/1.4906484