Thematische Bibliographien / Μ-Raman spectroscopy

Auswahl der wissenschaftlichen Literatur zum Thema „Μ-Raman spectroscopy“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

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Zeitschriftenartikel zum Thema "Μ-Raman spectroscopy"

Rinaudo, C., S. Cairo, D. Gastaldi, A. Gianfagna, S. Mazziotti Tagliani, G. Tosi und C. Conti. „Characterization of fluoro-edenite by μ-Raman and μ-FTIR spectroscopy“. Mineralogical Magazine 70, Nr. 3 (Juni 2006): 291–98. http://dx.doi.org/10.1180/0026461067030332.

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AbstractThe prismatic variety of fluoro-edenite, a new amphibole found in lavas from Mt Etna in Biancavilla (Catania Province, Sicily, Italy), has been characterized by μ-Raman and μ-FTIR spectroscopy. The wavenumbers at which the bands are detected in the μ-Raman and μ-FTIR spectra are compared with tremolite, asbestos the chemical and crystallographic characteristics of which are very similar to those of fluoro-edenite.

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Guo, Xin, Yiqiang Wu und Ning Yan. „Characterizing spatial distribution of the adsorbed water in wood cell wall of Ginkgo biloba L. by μ-FTIR and confocal Raman spectroscopy“. Holzforschung 71, Nr. 5 (01.05.2017): 415–23. http://dx.doi.org/10.1515/hf-2016-0145.

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Abstract The adsorbed water influences significantly, the physical and mechanical properties of wood. In the present paper, the spatial distribution of adsorbed water in wood cell walls has been studied by μ-Fourier transform infrared (μ-FTIR) and confocal Raman spectroscopy. In situ μ-FTIR spectra were collected from three randomly selected areas in different cell wall regions, which were exposed to an environment with 0% to 96% relative humidity (RH). The water adsorption sites were easily detectable based on OH, C=O, and C-O group vibrations and it was shown that the adsorbed water concentration was not uniform in different regions. Confocal Raman spectroscopy images were collected from the cell corner (CC) and middle layer of the secondary wall (S2) and the non-uniformity of water distribution could also be confirmed by this approach. It was demonstrated that both μ-FTIR and confocal Raman spectroscopy provide valuable information about the spatial distribution of adsorbed water in morphologically distinct cell wall regions.

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Dong, Junqing, Qinghui Li und Yongqing Hu. „Multi-technique analysis of an ancient stratified glass eye bead by OCT, μ-XRF, and μ-Raman spectroscopy“. Chinese Optics Letters 18, Nr. 9 (2020): 090001. http://dx.doi.org/10.3788/col202018.090001.

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Rickert, K., T. A. Prusnick, M. M. Kimani, E. A. Moore, C. A. Merriman und J. M. Mann. „Assessing UO2 sample quality with μ-Raman spectroscopy“. Journal of Nuclear Materials 514 (Februar 2019): 1–11. http://dx.doi.org/10.1016/j.jnucmat.2018.11.009.

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Xia, Jin Lan, Hong Chang Liu, Zhen Yuan Nie, Hong Rui Zhu, Yun Yang, Lei Wang, Jian Jun Song et al. „Characterization of Microbe-Mineral Interfacial Interaction Based on Synchrotron Radiation Techniques“. Advanced Materials Research 1130 (November 2015): 123–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1130.123.

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This article presents the progress on characterization of the interfacial interaction between sulfur oxidizing microbes and sulfide minerals by using of synchrotron radiation-based techniques including S/Fe/Cu X-ray absorption near-edge structure spectroscopy (XANES), X-ray Diffraction (XRD), micro-X-ray fluorescence (μ-XRF) mapping and micro-scanning transmission X-ray microscopy (μ-STXM) imaging, together with other accessory approaches such as SEM/EDS, Raman spectroscopy, FT-IR spectroscopy, and electrochemical methods as well as comparative proteomics methodology.

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Tejerina, M. R., D. Jaque und G. A. Torchia. „μ-Raman spectroscopy characterization of LiNbO3femtosecond laser written waveguides“. Journal of Applied Physics 112, Nr. 12 (15.12.2012): 123108. http://dx.doi.org/10.1063/1.4769869.

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Nayeri, Moheb, Kim Nygård, Maths Karlsson, Manuel Maréchal, Manfred Burghammer, Michael Reynolds und Anna Martinelli. „The role of the ionic liquid C6C1ImTFSI in the sol–gel synthesis of silica studied using in situ SAXS and Raman spectroscopy“. Physical Chemistry Chemical Physics 17, Nr. 15 (2015): 9841–48. http://dx.doi.org/10.1039/c5cp00709g.

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Quintero Balbas, Diego, Barbara Cattaneo, Andrea Cagnini, Paolo Belluzzo, Silvia Innocenti, Sandra Rossi, Raffaella Fontana und Jana Striova. „The Colors of the Butterfly Wings: Non-Invasive Microanalytical Studies of Hand-Coloring Materials in 19th-Century Daguerreotypes“. Heritage 5, Nr. 4 (18.12.2022): 4306–24. http://dx.doi.org/10.3390/heritage5040221.

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The public expected color from the early photographic images, yet, daguerreotypes—the first commercially available photographic process—failed to register the natural colors. Daguerreotypists developed several coloring methods to solve this inconvenience after 1840. Scientific analyses of the hand-colored daguerreotypes are limited, and the primary information sources available are manuals and patents. This study aims to contribute to the knowledge of hand-coloring techniques, which impacts conservation practices, mainly the cleaning procedures and complements technical art history investigations. We studied nine colored daguerreotypes with a non-invasive methodology based on three spectroscopic techniques: X-ray fluorescence (XRF), micro-Raman spectroscopy (μ-Raman), and micro-Fourier-transform infrared spectroscopy in reflection mode (μ-rFTIR). The results revealed the different colorants and some of their mixtures employed by the colorist. It also adds information regarding the photographic production of three studios: Désiré François Millet, active in Paris between 1840 and 1868; Antoine Claudet (1797–1867), active in London; and the James E. McClees and Washington Lafayette Germon studio, operative between 1846 and 1855 in Philadelphia, USA. These technical details constitute a helpful comparison to future studies on Daguerreian studios and colored daguerreotypes.

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Saettler, P., M. Hecker, M. Boettcher, C. Rudolph und K. J. Wolter. „μ-Raman spectroscopy and FE-modeling for TSV-Stress-characterization“. Microelectronic Engineering 137 (April 2015): 105–10. http://dx.doi.org/10.1016/j.mee.2015.01.024.

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ZENG, A., E. LIU, P. HING, S. ZHANG, S. N. TAN, I. F. ANNERGREN und J. GAO. „MICROSTRUCTURE AND ELECTROCHEMICAL BEHAVIOR OF SPUTTERED DIAMOND-LIKE CARBON FILMS“. International Journal of Modern Physics B 16, Nr. 06n07 (20.03.2002): 1024–30. http://dx.doi.org/10.1142/s0217979202010804.

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Diamond-like carbon (DLC) films with different structure were deposited on highly electrically conductive silicon substrates (SiO2/Si), using dc magnetron sputtering deposition process. Their structure and electrochemical behavior in 0.5 M H 2 SO 4 solution were studied with micro-Raman spectroscopy, electrochemical impedance spectroscopic (EIS) analysis and film impedance. The double layer capacitance on the DLC films was about 0.571 - 3.91 μ F-cm -2. The capacitance increased with the increased Raman spectrum intensity ratio I D / I G and accelerated at around 2.25 of the ratio. The results suggest that the potential of DLC films as electrode materials for electrochemical analysis.

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Dissertationen zum Thema "Μ-Raman spectroscopy"

Sader, Mikel. „Photoréactivité et comportement de phases des particules d'intérêt atmosphérique : étude à l'échelle de la particule individuelle en lévitation“. Electronic Thesis or Diss., Université de Lille (2022-....), 2023. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2023/2023ULILR086.pdf.

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Les particules atmosphériques jouent un rôle important dans les phénomènes du changement climatique. Elles modifient les propriétés microphysiques des nuages, et par conséquence leurs propriétés optiques, leur proportion, et leur temps de vie. Les océans sont la principale source d'aérosols naturels dans l'atmosphère. La composition de ces aérosols est complexe, et les particules fraichement émises reflètent la composition de l'eau de mer dont elles sont issues. Par ailleurs, l'activité biologique marine enrichit dans une certaine mesure ces aérosols en matière organique. La composition de ces particules évolue dans l'atmosphère marine polluée et au cours du vieillissement lors du transport dans l'atmosphère par interactions avec la lumière solaire et l'exposition aux gaz atmosphériques, à d'autres particules et à l'humidité, modifiant leurs caractéristiques physico-chimiques. L'étude approfondie des particules en laboratoire est d'une importance cruciale pour comprendre les processus physicochimiques des aérosols dans l'atmosphère.Dans cette thèse, nous avons étudié le comportement de phases et la photodégradation d'aérosols formés à partir de mélanges internes de composés organiques et inorganiques analogues aux espèces trouvées dans les aérosols marins frais et pollués par des émissions anthropiques. Les études ont été réalisées sur des particules individuelles en suspension dans l'air et déposées sur des substrats hydrophobes. La technique de micro-spectrométrie Raman couplée à une chambre de lévitation acoustique a été fondamentale pour la compréhension in-situ de l'état de mélange des particules lors de leur exposition à la lumière et à l'humidité, grâce à l'obtention de spectres résolus spatialement. La photolyse directe des particules d'acide malonique en lévitation, en l'absence d'un oxydant a été démontrée, ainsi que l'effet de la présence du sel NaCl sur les produits de photodégradation. L'impact des photoproduits sur les propriétés d'hygroscopicité des particules a également été mis en évidence. Des études réalisées sur des gouttelettes complexes contenant un oligomère, du sulfate d'ammonium et de l'acide glycolique ont révélé la coexistence de trois phases liquides dans la gouttelette, ainsi que la cristallisation prématurée du sel inorganique à une humidité relative élevée. L'effet de la lumière UV-Visible sur les propriétés d'hygroscopicité et la séparation de phases des particules en lévitation a été démontré
Atmospheric particles play a significant role in climate change. They modify the microphysical properties of clouds, and consequently their optical properties, their proportion, and their lifetime. The oceans are the main source of natural aerosols in the atmosphere. The composition of these aerosols is complex, and freshly emitted particles reflect the composition of the seawater from which they originate. In addition, marine biological activity enriches these aerosols to some extent with organic matter. The composition of these particles evolves in the polluted marine atmosphere and during aging as they travel through the atmosphere, by interactions with sunlight and exposure to atmospheric gases, other particles, and humidity, modifying their physicochemical characteristics. In depth-study of particles in the laboratory is of crucial importance for understanding the physicochemical processes of aerosols in the atmosphere.In this thesis, we studied the phase behavior and photodegradation of aerosols formed from internal mixtures of organic and inorganic compounds analogous to the species found in fresh and polluted marine aerosols from anthropogenic emissions. The studies were conducted on individual particles suspended in air and deposited on hydrophobic substrates. The Raman micro-spectrometry technique coupled to an acoustic levitation chamber was fundamental for understanding in-situ the state of mixing of the particles during their exposure to light and humidity, through the acquisition of spatially resolved spectra. The direct photolysis of malonic acid particles in levitation, in the absence of an oxidant, has been demonstrated, as well as the effect of the presence of NaCl salt on the photodegradation products. The impact of the photoproducts on the hygroscopic properties of the particles has also been highlighted. Studies carried out on complex droplets containing an oligomer, ammonium sulfate, and glycolic acid revealed the coexistence of three liquid phases in the droplet, as well as the premature crystallization of the inorganic salt at high relative humidity. The effect of the UV-Visible light on the hygroscopic properties and the phase separation of levitated particles has been demonstrated

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Mohamed, Tawheed Hashim Abdel-Razik [Verfasser], und Michael [Akademischer Betreuer] Grunze. „In-situ and ex-situ studies of barnacle proteinaceous cements settled at earlier time points using μ-Raman spectroscopy and synchrotron based X-ray microprobe fluorescence techniques / Tawheed Hashim Abdel-Razik Mohamed ; Betreuer: Michael Grunze“. Heidelberg : Universitätsbibliothek Heidelberg, 2014. http://d-nb.info/1179925882/34.

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Mohamed, Tawheed H. A. [Verfasser], und Michael [Akademischer Betreuer] Grunze. „In-situ and ex-situ studies of barnacle proteinaceous cements settled at earlier time points using μ-Raman spectroscopy and synchrotron based X-ray microprobe fluorescence techniques / Tawheed Hashim Abdel-Razik Mohamed ; Betreuer: Michael Grunze“. Heidelberg : Universitätsbibliothek Heidelberg, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:16-heidok-172073.

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Buchteile zum Thema "Μ-Raman spectroscopy"

Palacios, P. R., Angel Bustamante, P. Romero-Gómez und J. C. González. „Kinetic study of the thermal transformation of limonite to hematite by X-ray diffraction, μ-Raman and Mössbauer spectroscopy“. In LACAME 2010, 271–76. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-4301-4_36.

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Grammatikakis, Johannes E., Athanasia Kanta und Constantinos D. Dimadis. „Firing temperature definition through the application of μ – Raman spectroscopy:“. In Cutting-edge Technologies in Ancient Greece, 19–26. Oxbow Books, 2020. http://dx.doi.org/10.2307/j.ctv13nb882.7.

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Mossotti, Raffaella, Giulia Dalla Fontana, Anastasia Anceschi, Enrico Gasparin und Tiziano Battistini. „Round Robin Test on Microplastic Counting and Identification Method“. In Environmental Sciences. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109757.

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The aim of this work is to verify the quality, robustness, and accuracy of a standard analytical protocol for the determination of microplastics in aqueous textile matrices. In order to reach this objective, a round robin scale identification and quantification test program was conducted. In particular, this chapter describes the round robin test, an interlaboratory comparison test on standard microfilament suspensions initiated in November 2021 by an expression of interest open call. In total, 18 laboratories expressed their interest, and 13 participants sent their results. Each of these laboratories received a set of 10 samples, accompanied by a protocol. The 10 samples consisted of three replicates per type of three different synthetic yarns and a control sample. The data required were the number of microplastics per sample recognized as fibers or particles, microplastic fiber lengths and diameters, and identification of the polymer using vibrational spectroscopy (μ-FTIR and/or μ-Raman). The data collected were statistically elaborated. The results highlighted that the laboratories had different recovery rates directly related to their specific procedures and equipment. Although there were issues related to the correct use of the standard method and to the behavior of operators, the method proved to be valid for the determination of microplastics in aqueous matrices.

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Konferenzberichte zum Thema "Μ-Raman spectroscopy"

Singh, Jitendra Pal, Gagan Dixit, R. C. Srivastava, H. M. Agrawal, Ravi Kumar, P. M. Champion und L. D. Ziegler. „μ-Raman Study of Nanosized Zinc Ferrite above the Threshold of Electronic Stopping Regime“. In XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482365.

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Vartanian, Victor, Takeshi Ueda, Toshikazu Ishigaki, Kitaek Kang, Woo Sik Yoo, David G. Seiler, Alain C. Diebold, Robert McDonald, Amal Chabli und Erik M. Secula. „High Resolution Multiwavelength μ-Raman Spectroscopy for Nanoelectronic Material Characterization Applications“. In FRONTIERS OF CHARACTERIZATION AND METROLOGY FOR NANOELECTRONICS: 2011. AIP, 2011. http://dx.doi.org/10.1063/1.3657878.

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Jurado, J. F., C. Vargas Hernández, J. E. Sánchez, F. Racedo Niebles, P. M. Champion und L. D. Ziegler. „Studies of Strain in Heterostructures GaAs∕GaAs, GaAs:C∕GaAs and GaAs:Si∕GaAs by Spectroscopy μ-Raman“. In XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482369.

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Okumura, Tadashi, Katsuya Oda, Junichi Kasai und Yuji Suwa. „Analysis of strained Germanium waveguide by μ-Raman spectroscopy and transmission characteristics“. In 2016 IEEE 13th International Conference on Group IV Photonics (GFP). IEEE, 2016. http://dx.doi.org/10.1109/group4.2016.7739081.

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Ravindra, Deepak, Muralidhar K. Ghantasala und John Patten. „The Annealing Effect of the High-Pressure Phases of Silicon During Micro-Laser Assisted Machining“. In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7207.

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Micro-laser assisted machining (μ-LAM) is a novel micro/nano machining technique developed for ductile mode machining of ceramics and semiconductors. Ductile mode material removal is possible in a nominally brittle material due to the high-pressure phase transformation (HPPT) phenomenon during the machining process. The μ-LAM system utilizes an IR laser beam to preferentially heat and soften the workpiece material during the material removal process. The μ-LAM process has several direct benefits observed during the machining process: allows for deeper cuts in the ductile regime due to the enhanced ductility of the workpiece material, higher material removal rates as a result of deeper cuts, lower cutting forces due to the reduced workpiece hardness from the heating process, and less tool wear from the reduced hardness and lower cutting forces. The μ-LAM process also has an added benefit that eliminates any subsurface damage in the form of high-pressure phases (HPPs) that usually remain after the ductile mode material removal process. This paper discusses this added benefit that occurs due to an annealing effect that re-crystallizes the HPPs back to its original crystalline phase. Single point scratch tests are used to form the HPPs by performing ductile mode μ-LAM on single crystal silicon (Si). Micro-Raman (μ-Raman) spectroscopy is used to characterize the machined surface/subsurface and identify the HPPs and annealed phase.

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Kociniewski, T., und Z. Khatir. „Temperature and strain mappings over forward biased power IGBT cross-section area by μ-Raman spectroscopy“. In 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe). IEEE, 2015. http://dx.doi.org/10.1109/epe.2015.7309315.

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Okoro, C., Y. Yang, B. Vandevelde, B. Swinnen, D. Vandepitte, B. Verlinden und I. de Wolf. „Extraction of the Appropriate Material Property for Realistic Modeling of Through-Silicon-Vias using μ-Raman Spectroscopy“. In 2008 International Interconnect Technology Conference - IITC. IEEE, 2008. http://dx.doi.org/10.1109/iitc.2008.4546912.

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Zhang, Ruijun, Shenghua Li und Yuansheng Jin. „Frictional Behavior and Tribo-Carbonization of a Synthetic Engine Oil (SJ/CF/5W-30) With Different Tribo-Materials Under Stepwise Heating Conditions“. In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63847.

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Frictional behavior of a synthetic engine oil, SJ/CF/5W-30, was investigated on a SRV reciprocating tribotester with tribo-materials consisting of Mo-sprayed coating, nitrided coating and Cr-plated coating sliding against cast iron operating under stepwise heating conditions. It was observed that, for the three tribo-materials, as operating temperature rose, there invariably existed a local minimum for frictional coefficient (μ), and the specific minimal μ value depended on the type of tribo-materials. Chemical characterization of worn cast iron surfaces using Raman spectroscopy indicated the existence of carbonaceous substances derived from the applied engine oil. There existed some correlation between microcrystal graphitic planar size (La value) and the local minimal frictional coefficient. Of the three tribo-materials, the maximal La value of the carbonaceous species was founded on the Mo-sprayed coating, and correspondingly, the lowest frictional coefficient occurred, indicating a more obvious anti-friction effect.

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Ali, Bilal A., Dunja Bulajic, Michela Corsi, Gabriele Cristoforetti, Stefano Legnaioli, Leonardo F. Masotti, Vincenzo Palleschi, Azenio Salvetti und Elisabetta Tognoni. „μ-LIBS/μ-Raman spectroscopic analysis of pigments in a Roman fresco“. In Lasers in Metrology and Art Conservation, herausgegeben von Renzo Salimbeni. SPIE, 2001. http://dx.doi.org/10.1117/12.445670.

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