Obtaining absorption spectra from single textile fibers using a liquid crystal tunable filter microspectrophotometer

Markstrom, Luke J.; Mabbott, Gary A.

doi:10.1016/j.forsciint.2011.01.014

Cited by 13 publications

(9 citation statements)

References 12 publications

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“…Multivariate statistical analysis may improve these results. Markstrom and Mabbott also demonstrated the advantages of using HSI for the comparison of fibers [52] and addressed that the ability to compare fibers simultaneously in one measurement minimizes the chance for errors.…”

Section: Other Tracesmentioning

confidence: 99%

Hyperspectral imaging for non-contact analysis of forensic traces

Edelman

Gaston

Leeuwen

et al. 2012

Forensic Science International

245

116

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Hyperspectral imaging (HSI) integrates conventional imaging and spectroscopy, to obtain both spatial and spectral information from a specimen. This technique enables investigators to analyze the chemical composition of traces and simultaneously visualize their spatial distribution. HSI offers significant potential for the detection, visualization, identification and age estimation of forensic traces. The rapid, non-destructive and non-contact features of HSI mark its suitability as an analytical tool for forensic science. This paper provides an overview of the principles, instrumentation and analytical techniques involved in hyperspectral imaging. We describe recent advances in HSI technology motivating forensic science applications, e.g. the development of portable and fast image acquisition systems. Reported forensic science applications are reviewed. Challenges are addressed, such as the analysis of traces on backgrounds encountered in casework, concluded by a summary of possible future applications.

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Section: Other Tracesmentioning

confidence: 99%

Hyperspectral imaging for non-contact analysis of forensic traces

Edelman

Gaston

Leeuwen

et al. 2012

Forensic Science International

245

116

View full text Add to dashboard Cite

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“…Single textile fibers can be an essential form of trace evidence, and characterization of evidential fibers has been accomplished by examining fiber composition, 1–4 fiber dye structure, 5–7 color, 8 absorption, 9 Raman signal, 10 and fluorescence. 11,12 Identification using such characteristics is essential since forensic fibers can be transferred and subsequently examined to discover common origins.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Textile Fiber Identification with Detergent Fluorescence

2015

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Discovering common origins of trace evidential textile fibers can be a challenging task when fiber structure or dye composition does not provide exclusive identifying information. Introduction of new chemical species after mass production and distribution of a textile may be exploited to trace its history and identify the origin of its fibers. In this article, fluorescence microscopy is used to examine the alteration in the fluorescence spectral fingerprint of single fibers resulting from exposure to commonly used detergents that contain fluorescent whitening agents. Dyed acrylic, cotton, and nylon fibers were laundered and the spectral contribution of the detergent on single fibers was quantified and shown to reach a maximum after five sequential washes; some detergents showed statistically meaningful differences to fiber spectra after only a single wash. Principal component cluster analysis was used to determine that the spectra of laundered fibers are distinct from the spectra of dyed, unwashed cotton or nylon, but not acrylic, fibers.

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“…21,22 MSI imaging methods have been used previously for fiber/yarn analysis. 23,24 For example, researchers have used UV–Vis absorbance-based MSI to discriminate yarn types 21,24 without affecting sample integrity. Luminescence (L) -based LM/HSI has been used extensively in the biological sciences 25–27 and also in forensic science to discriminate forensic evidence from its background 24,28,29 (e.g., footprint and fingerprint analysis); however, it does not appear as if LM/HSI has been used for fiber bundle discrimination.…”

Section: Introductionmentioning

confidence: 99%

Rapid, Nondestructive Denim Fiber Bundle Characterization Using Luminescence Hyperspectral Image Analysis

Deuro

Leiker²,

Wang

et al. 2015

Appl Spectrosc

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An investigation into the performance of luminescence-based hyperspectral imaging (LHSI) for denim fiber bundle discrimination has been conducted. We also explore the potential of nitromethane (CH3NO2) -based quenching to improve discrimination, and we determine the quenching mechanism. The luminescence spectra (450-850 nm) and images from the denim fiber bundles were obtained with excitation at 325 or 405 nm. LHSI data were recorded in less than 5 s and subsequently assessed by principal component analysis or rendered as red, green, blue (RGB) component histograms. The results show that LHSI data can be used to rapidly and uniquely discriminate between all the fiber bundle types studied in this research. These non-destructive techniques eliminate extensive sample preparation and allow for rapid hyperspectral image collection, analysis, and assessment. The quenching data also revealed that the dye molecules within the individual fiber bundles exhibit dramatically different accessibilities to CH3NO2.

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Obtaining absorption spectra from single textile fibers using a liquid crystal tunable filter microspectrophotometer

Cited by 13 publications

References 12 publications

Hyperspectral imaging for non-contact analysis of forensic traces

Hyperspectral imaging for non-contact analysis of forensic traces

Enhancing Textile Fiber Identification with Detergent Fluorescence

Rapid, Nondestructive Denim Fiber Bundle Characterization Using Luminescence Hyperspectral Image Analysis

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