Energy-optimized synchrotron XRF mapping of an obscured painting beneath Exit from the Theater, attributed to Honoré Daumier

Smieska, Louisa; Twilley, John; Woll, Arthur; Schafer, Mary; DeGalan, Aimee Marcereau

doi:10.1016/j.microc.2019.01.058

Cited by 11 publications

(7 citation statements)

References 21 publications

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“…30 These advances have thrust X-ray fluorescence microscopy (XFM) at synchrotron light sources into a wide-range of scientific areas to map trace elemental content, including material sciences, 31 life sciences, 32 and cultural heritage studies. 33,34 Previous research has demonstrated the use of XFM imaging of sebaceous fingermarks to provide critical information on elemental distribution; however, the instrumentation available in that study did not have the sensitivity required to detect trace metals at micron spatial resolution. 26 In this work, we have used IRM in combination with XFM to characterize the location of organic and inorganic constituents in fingermark residue to better understand the chemical complexity of natural fingermarks and how it may impact methods of fingermark detection.…”

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confidence: 95%

“…Advances in brightness of third generation synchrotron light sources and upgrades in detector technology and electronics now make possible rapid, direct elemental mapping, at micron spatial resolution and sub-μM detection limits . These advances have thrust X-ray fluorescence microscopy (XFM) at synchrotron light sources into a wide-range of scientific areas to map trace elemental content, including material sciences, life sciences, and cultural heritage studies. , Previous research has demonstrated the use of XFM imaging of sebaceous fingermarks to provide critical information on elemental distribution; however, the instrumentation available in that study did not have the sensitivity required to detect trace metals at micron spatial resolution …”

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confidence: 99%

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Revealing the Elemental Distribution within Latent Fingermarks Using Synchrotron Sourced X-ray Fluorescence Microscopy

et al. 2019

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Fingermarks are an important form of crime-scene trace evidence; however, their usefulness may be hampered by a variation in response or a lack of robustness in detection methods. Understanding the chemical composition and distribution within fingermarks may help explain variation in latent fingermark detection with existing methods and identify new strategies to increase detection capabilities. The majority of research in the literature describes investigation of organic components of fingermark residue, leaving the elemental distribution less well understood. The relative scarcity of information regarding the elemental distribution within fingermarks is in part due to previous unavailability of direct, micron resolution elemental mapping techniques. This capability is now provided at third generation synchrotron light sources, where X-ray Fluorescence Microscopy (XFM) provides micron or sub-micron spatial resolution and direct detection with sub-μM detection limits. XFM has been applied in this study to reveal the distribution of inorganic components within fingermark residue, including endogenous trace metals (Fe, Cu, Zn), diffusible ions (Cl-, K+, Ca2+), and exogeneous metals (Ni, Ti, Bi). This study incorporated a multi-modal approach using XFM and Infrared Microspectroscopy (IRM) analyses to demonstrate co-localisation of endogenous metals within the hydrophilic organic components of fingermark residue. Additional experiments were then undertaken to investigate how sources of exogenous metals (e.g. coins and cosmetics) may be transferred to, and distributed within latent fingermarks. Lastly, this study reports a preliminary assessment of how environmental factors such as exposure to aqueous environments may effect elemental distribution within fingermarks. Taken together, the results of this study advance our current understanding of fingermark composition and its spatial distribution of chemical components, and may help explain detection variation observed during detection of fingermarks using standard forensic protocols. File list (3) download file view on ChemRxiv XFM_Mapping_Fingermarks_V1.pdf (4.82 MiB) download file view on ChemRxiv XFM_Mapping_Fingermarks_TOCentry.png (1.22 MiB) download file view on ChemRxiv XFM_Mapping_Fingermarks_SupportingInfo_V1.pdf (7.11 MiB)

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confidence: 95%

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Revealing the Elemental Distribution within Latent Fingermarks Using Synchrotron Sourced X-ray Fluorescence Microscopy

et al. 2019

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“…Among the large detector arrays for XRF installed worldwide, very recently, a MAIA detector (the abovementioned array of 384 detectors) has been used for CH. MAIA, installed at a synchrotron facility, has been exploited to study a landscape present underneath a painting (the "Exit from the Theater" attributed to Honoré Daumier) [112].…”

Section: X-ray Detectors-synchrotron-based Techniques-xrf and Xasmentioning

confidence: 99%

Detectors and Cultural Heritage: The INFN-CHNet Experience

et al. 2021

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Detectors are a key feature of the contemporary scientific approach to cultural heritage (CH), both for diagnostics and conservation. INFN-CHNet is the network of the Italian National Institute of Nuclear Physics that develops and applies new instrumentation for the study of CH. This process results in both optimized traditional state-of-the-art and highly innovative detection setups for spectrometric techniques. Examples of the former are X-rays, gamma-rays, visible-light and particles spectrometers tailored for CH applications, with optimized performances, reliability, weight, transportability, cost, absorbed power, and complementarity with other techniques. Regarding the latter, examples are ARDESIA, the array of detectors at the DAΦNE-Light facility, the MAXRS detection setup at the Riken-RAL muon beamline and the imaging facilities at the LENA Laboratory. Paths for next-generation instruments have been suggested, as in the case of the X-ray Superconductive Detectors and X-ray Microcalorimeter Spectrometers, allowing astonishing improvement in energy resolution. Many issues in CH can now be addressed thanks to scientific techniques exploiting the existing detectors, while many others are still to be addressed and require the development of new approaches and detectors.

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“…This approach has been used to simultaneously identify and map pigments present on both sides of a 15th/16th century illuminated sheet of parchment (Figure ). The same approach has been recently exploited, together with MA‐XRF, to obtain stratigraphic information, without sampling, of Exit from the Theater, a painting attributed to Honoré Daumier, and produced over an earlier landscape, whereas on the iconic painting by Vermeer, Girl with a Pearl Earring, a cerussite‐rich lead white paint could be found on top of a hydrocerussite‐rich underlayer …”

Section: Principles and Contributions Of Xrd Mappingmentioning

confidence: 99%

“…Many XRD mapping experiments (in particular those performed on paintings and manuscripts) aim at identifying the composition of the various pigments used by the artists . The pioneering application of XRD mapping was on a fragment of a Roman wall painting, displaying a portrait.…”

Section: Applicationsmentioning

confidence: 99%

X‐ray Diffraction Mapping for Cultural Heritage Science: a Review of Experimental Configurations and Applications

González

Cotte

Vanmeert

et al. 2019

Chemistry A European J

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X-ray diffraction (XRD) mapping consists in the acquisition of XRD patterns at each pixel (or voxel) of an area (or volume). The spatial resolution ranges from the micrometer (mXRD) to the millimeter (MA-XRD)s cale, making the technique relevant for tiny samples up to large objects. Although XRD is primarily used for the identification of different materials in (complex) mixtures, additional information regarding the crystallite size, their orientation, and their indepth distribution can also be obtained. Through mapping, these different types of information can be located on the studied sample/object. Cultural heritage objects are usually highly heterogeneous, and contain both original and later (degradation, conservation) materials. Their structural characterization is required both to determine ancient manufacturing processes and to evaluate their conservation state. Togetherw ith other mapping techniques, XRD mapping is increasingly used for these purposes. Here, the authors review applicationsa sw ell as the various configurations for XRD mapping (synchrotron/laboratory X-ray source, poly-/monochromatic beam,micro/macro beam, 2D/3D, transmission/reflectionm ode). On-going hardware and software developments will further establish the technique as ak ey tool in heritage science.[a] Dr.

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Energy-optimized synchrotron XRF mapping of an obscured painting beneath Exit from the Theater, attributed to Honoré Daumier

Cited by 11 publications

References 21 publications

Revealing the Elemental Distribution within Latent Fingermarks Using Synchrotron Sourced X-ray Fluorescence Microscopy

Revealing the Elemental Distribution within Latent Fingermarks Using Synchrotron Sourced X-ray Fluorescence Microscopy

Detectors and Cultural Heritage: The INFN-CHNet Experience

X‐ray Diffraction Mapping for Cultural Heritage Science: a Review of Experimental Configurations and Applications

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