Article
Spectroscopy
I. Queralt, S. Pessanha, M. L. Carvalho, M. Manso
Summary: In this study, the features of a modern Chinese cloisonné vase were investigated using small-spot energy dispersive X-ray fluorescence (EDXRF) and micro-Raman spectroscopy. Quantitative analysis of enamel revealed the presence of eleven different colored enamels, with chromium, manganese, iron, cobalt, copper, antimony, and cadmium identified as the main coloring agents. The body of the vase was made of copper with minor amounts of zinc and tin. Metal coatings applied for decoration were also found on the surface of the vase, with the gilded coatings consisting of a thick layer made by silver-doped nickel.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Biochemistry & Molecular Biology
Yanli Li, Haiqiang Guo, Ke Xiao, Panpan Liu, Xiaolian Chao, Peng Fu, Huiping Xing, Yuhu Li
Summary: This study employed various analytical techniques to investigate the craftsmanship of painted pottery figurines excavated from the tomb of Qibi Ming in the Tang Dynasty. The results showed that the surface of the pigment layers had degraded to different degrees, and the pigment particles included litharge, gypsum, malachite, cinnabar, hematite, minium, white lead, and carbon black. The cross-sectional images revealed the structure of the painted layer and preparation layer of the figurines, with lead white commonly used as the preparation layer. The firing temperature was estimated to be 1080 degrees Celsius. This study provides important information for understanding the composition of the raw materials used in the production of these artifacts and guiding conservation and restoration efforts.
Article
Genetics & Heredity
Pierre-Louis Stenger, Chin-Long Ky, Celine Reisser, Julien Duboisset, Hamadou Dicko, Patrick Durand, Laure Quintric, Serge Planes, Jeremie Vidal-Dupiol
Summary: The study found that the production of different shell colors in the pearl oyster is regulated by the heme pathway, involving the production of red, yellow, and green pigments. Additionally, the Raper-Mason and purine metabolism pathways are also associated with the production of yellow and black pigments.
Article
Oncology
Christoph Krafft, Juergen Popp, Peter Bronsert, Arkadiusz Miernik
Summary: Raman spectroscopy allows for label-free assessment of bladder tissue in intraoperative applications. In a retrospective study, Raman microspectroscopic images were used to identify different components of bladder tissue, including normal bladder, bladder cancer, necrosis, epithelium, and lipid inclusions. Additionally, foreign materials such as microplastic particles and pigments were detected in the specimens. This study demonstrates the potential of Raman spectroscopy for tumor detection and material identification in complex matrices.
Article
Chemistry, Analytical
Chiara Calvagna, Andrea Azelio Mencaglia, Iacopo Osticioli, Daniele Ciofini, Salvatore Siano
Summary: A new thermally controlled portable Raman spectroscopy probe with infrared sensing lines was developed in this study. It allowed real-time measurement of the local emissivity of the material surface under laser excitation and was successfully applied to pigments, paint layers, and a painting on canvas.
Article
Biochemistry & Molecular Biology
Ines Cardoso-Martins, Sofia Pessanha, Ana Coelho, Sofia Arantes-Oliveira, Paula F. Marques
Summary: This study evaluated the efficacy of CPP-ACP tooth mousse in remineralizing MIH-affected enamel and found that treatment with CPP-ACP tooth mousse improved the mineral density and organization of hypomineralized enamel.
Article
Biochemical Research Methods
Hao Liu, Zhouyi Guo, Luoqi Mo, Yan Sun, JuanJuan Zhang, Xiaoying Liu, Zhiming Liu
Summary: The study reveals the close association between MSX2 and amelogenesis imperfecta, demonstrating the structural and compositional abnormalities in Msx2(-/-) enamel through optical coherence tomography and Raman spectroscopy techniques, providing a deeper understanding of the mechanism of abnormal enamel formation related to MSX2.
JOURNAL OF BIOPHOTONICS
(2021)
Article
Anatomy & Morphology
Ozlem Marti Akgun, Sevgi Haman Bayari, Semra Ide, Gunseli Guven Polat, Ceren Yildirim, Ilgar Orujalipoor
Summary: This study investigated the structural changes in human dental enamel surfaces during demineralization and remineralization processes using ATR-FTIR, Raman spectroscopy, and SAXS techniques. Results showed that application of ROCS and CPP-ACP agents could effectively influence the nanostructures of enamel.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Dentistry, Oral Surgery & Medicine
Mariangela Ivette Guanipa Ortiz, Juliana Jarussi dos Santos, Ubirajara Pereira Rodrigues-Filho, Flavio Henrique Baggio Aguiar, Klaus Rischka, Debora Alves Nunes Leite Lima
Summary: This study assessed the effects of an experimental bleaching gel containing 35% hydrogen peroxide and calcium polyphosphate sub-microparticles on the physical and chemical properties of human enamel. The results showed that the addition of calcium polyphosphate did not alter the bleaching effectiveness or surface roughness, but it increased the microhardness and preserved the mineral content of the enamel.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Chemistry, Analytical
Estibaliz Lama, Nagore Prieto-Taboada, Idoia Etxebarria, Juan Bermejo, Kepa Castro, Gorka Arana, Maria Dolores Rodriguez Laso, Juan Manuel Madariaga
Summary: A multi-analytical approach was used to characterize the mural paintings in Punta Begona galleries in Spain, filling gaps in historical documentation. Various spectroscopic and microdestructive techniques were employed to identify original pigments and nature of paintings, revealing historical details and changing the perception of the heritage. This analytical chemistry study contributes to a deeper understanding of the murals and the building's historical significance.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Daria Kiseleva, Elizaveta Pankrushina
Summary: Teeth and bones are important bioarchives that can be altered due to diagenesis or burning. The thermal behavior of modern and archeological tooth tissues was investigated using in situ thermo-Raman spectroscopy, revealing structural changes in organic and mineral components of a tooth.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Tomasz Buchwald, Zuzanna Buchwald, Agata Daktera-Micker
Summary: Raman spectroscopy is being developed for early detection of dental caries. The study assessed the influence of organic compounds in healthy human enamel on the background intensity in Raman spectra. Results showed that the Raman spectroscopy background may be useful in dental research but should be treated cautiously as fluorescence may be related to organic compounds in plaque, not in the carious lesion.
VIBRATIONAL SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Worasarit Saengsui, Teerasak Tangkittimasak, Mantana Suwan, Nuchjarin Sangwong, Chalita Tangon, Narong Chanlek, Pattana Rakkwamsuk, Sitthisuntorn Supothina, Worawat Meevasana
Summary: Mg1-xCoxAl2O4, Zn1-xCoxFe2O4, and CrxSbxTi1-2xO2 pigment series with varying chemical constitution were prepared and structurally confirmed. Valence band maximum and Raman signal area were used to represent electronic and phononic absorption, respectively. The behavior of electronic and phononic absorption in near-infrared reflectance was trivial for Mg1-xCoxAl2O4 and Zn1-xCoxFe2O4, but nontrivial for CrxSbxTi1-2xO2. In CrxSbxTi1-2xO2, electronic absorption dominated at low doping regime, while phononic absorption played a dominance role at high doping regime. This nontrivial scenario provides insights into the reflective mechanism and paves the way for improving solar reflective pigment with color tuning.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Clement de Mecquenem, Myriam Eveno, Matthias Alfeld, Ruven Pillay, Eric Laval, Elisabeth Ravaud, Ina Reiche
Summary: The study examines the alteration and reconstitution of the blue pigment smalt in a painting from the sixteenth century. Noninvasive imaging techniques provide an overview of the artist's palette and its distribution, while detailed analysis of samples reveals the deterioration of smalt and provides structural information on other adjacent pigments.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Spectroscopy
Merve Atas Demir, Ebru Hazar Bodrumlu, Levent Demiriz
Summary: This study aimed to evaluate the changes in PO4-3 of enamel surfaces by using Raman analysis after applying three different remineralization agents containing Ca-PO4-3 in vitro. The study found that remineralizing agents have positive effects on the phosphate concentration of initial enamel caries, but there was no significant difference in PO4-3 changes between remineralized surfaces and intact surfaces.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Materials Science, Ceramics
Liliana Gianni, Helene Renel, Aleksandar Kremenovic, Philippe Colomban
Summary: Representative 'Blue speckled' and 'Brown speckled' wares from Qalhat and Bahla in Oman were analyzed using various techniques. The study revealed differences in composition, firing temperatures, and glaze types and compositions. It is suggested that the wares were locally produced, but the origin of the glazes used in the 'Blue speckled' wares remains uncertain.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Review
Geochemistry & Geophysics
Philippe Colomban, Burcu Kirmizi, Gulsu Simsek Franci
Summary: The article discusses the history of cobalt as a coloring agent for glass, glaze, and enamel, as well as the different forms of cobalt and its relationship with geological deposits and associated elements. It also highlights the importance of analytical tools and better understanding of cobalt ores.
Article
Materials Science, Ceramics
Philippe Colomban, Anh-Tu Ngo, Howell G. M. Edwards, Linda C. Prinsloo, L. Valerie Esterhuizen
Summary: Shards of Blue-and-White Ming porcelain from shipwrecks of Portuguese ships found on the coasts of South Africa, as well as a shard from Mombasa (Kenya), were analyzed using optical microscopy, SEM-EDS, and Raman microspectroscopy. The study revealed differences in the composition of the porcelain body paste and types of glazes used, with blue decoration characteristic of materials rich in manganese.
CERAMICS INTERNATIONAL
(2022)
Editorial Material
Spectroscopy
Philippe Colomban, Howell G. M. Edwards, Wolfgang Kiefer, Laurence A. Nafie
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Philippe Colomban, Michele Gironda, Divine Vangu, Burcu Kirmizi, Bing Zhao, Vincent Cochet
Summary: The study of two masterpieces from the Qing Dynasty revealed the technical characteristics and sources of the materials used in their production. The Qianlong ewer used cobalt imported from Europe, while the incense burner utilized Asian cobalt ores, reflecting the exchange of techniques during that period.
Article
Chemistry, Physical
Philippe Colomban
Summary: This study compares the Raman signatures of different colored enamels used in European, Chinese, and Japanese porcelains and enameled metalworks. The results show that Raman microspectroscopy can identify fingerprint spectra of milestone technologies and is a useful tool for detecting copies.
Article
Chemistry, Physical
Philippe Colomban
Summary: A didactic review of vibrational spectroscopy procedures for studying mobile protonic species in solid hydrates, crystals and ceramics is proposed. Representative examples of materials are given, and the advantages of isotopic substitution and dilution measurements are discussed. The vibrational signatures of different proton species and the characterization of protonic species without or with weak vibrational signatures are presented. The presence of a strong incoherent inelastic neutron scattering background appears to be characteristic of proton conductors.
SOLID STATE IONICS
(2023)
Article
Materials Science, Ceramics
Philippe Colomban, Gulsu Simsek Franci, Jacques Burlot, Xavier Gallet, Bing Zhao, Jean-Baptiste Clais
Summary: On-site pXRF analysis is conducted on French collections of decorated porcelains from the Qing Dynasty to identify enamel types, ions and coloring phases, as well as differentiate between Chinese/Asian raw materials and those imported by European missionaries. The study focuses on cobalt-associated elements, impurities in the silicate matrix, and the use of gold or copper nanoparticles. Comparisons are made with previous measurements on Qing imperial porcelains, Cantonese productions, and blue-and-white wares from different museums and collections.
CERAMICS-SWITZERLAND
(2023)
Article
Spectroscopy
Jacques Burlot, Divine Vangu, Ludovic Bellot-Gurlet, Philippe Colomban
Summary: This study analyzes the yellow pigments of enameled objects from 18th century French and Chinese productions and identifies different types of Raman signatures. The combination of spectral decomposition parameters and PCA analysis proves effective in categorizing the pigments.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Spectroscopy
Jacques Burlot, Divine Vangu, Ludovic Bellot-Gurlet, Philippe Colomban
Summary: Raman analysis is utilized to study the phases observed in the different colored enamels of French and Chinese objects from the 18th century. The effectiveness of a solid-state spectroscopic approach and a multivariate chemometric approach is compared. The incorporation of spectra from similar phases in the literature is crucial for obtaining quality results. The combination of visual observation and multivariate analysis reveals that different production techniques result in variations in the peaks associated with the main As-O stretching vibration. Arsenic-based opacifiers are detected in the enamelled artifacts, both in French and Chinese objects.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Geochemistry & Geophysics
Philippe Colomban, Gulsu Simsek Franci
Summary: Raw materials play a significant role in determining the composition and properties of fired ceramics. Raman analysis was used to characterize the micro- and nanostructures of glazes from various regions, revealing three different types of glazes and identifying specific color compositions. Different pigments and opacifiers were also identified. The results provide insights into the production and connection between different ceramic artifacts.
Article
Humanities, Multidisciplinary
Philippe Colomban, Gulsu Simsek Franci, Michele Gironda, Pauline d'Abrigeon, Anne-Claire Schumacher
Summary: Raman and XRF analyses have shown that it is possible to identify specific phases and elements used in ceramics made with European recipes and ingredients. The study focused on ceramics produced in the Forbidden City during the Qing Dynasty and in Guangzhou, and found that they used the same raw materials. The study also observed some artifacts with anachronistic characteristics that suggest they were produced around 1850.
Article
Chemistry, Physical
Philippe Colomban, Michele Gironda, Gulsu Simsek Franci, Pauline D'Abrigeon
Summary: This study applies non-invasive on-site portable techniques, Raman microscopy, and X-ray fluorescence spectroscopy to analyze imperial bowls and decorated dishes from the Qing Dynasty. The findings reveal variations in coloring agents and glaze compositions, highlighting the uniqueness of each object instead of small-scale production.
Article
Humanities, Multidisciplinary
Gulsu Simsek Franci, Philippe Colomban
Summary: The invention of European hard porcelain, which imitates Chinese porcelain, began with the development of red porcelain technology by Johann Friedrich Bottger in Meissen, Saxony. This study compares the chemical characteristics of European and Chinese red stoneware using on-site characterization techniques. The results show significant differences between Dutch objects and others, and provide a methodology for distinguishing the provenance and authenticity of artifacts.
Article
Humanities, Multidisciplinary
Philippe Colomban, Anh-Tu Ngo, Nicolas Fournery
Summary: Six rare porcelains from the Qing Dynasty were analyzed using non-invasive Raman microspectrometry. The study found that European ingredients and/or recipes were used, indicating China's role as both an importer of European know-how and an exporter of enameled products with imported technologies during the 18th century. Different recipes or raw materials may be the signature of different workshops.