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Academic literature on the topic 'Reference Raman spectra'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Reference Raman spectra"

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Synytsya, Alla, Zuzana Kováčová, Daniela Janstová, Michal Vočka, Jaromír Petrtýl, and Luboš Petruželka. "Comparative Study on Handheld, Modular, and Laboratory Raman Instruments for the Analysis of Colon Tissues and Colorectal Polyps." Applied Sciences 14, no. 2 (2024): 791. http://dx.doi.org/10.3390/app14020791.

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Portable Raman spectrometers may offer advantages for clinical medical diagnostics over laboratory instruments by allowing for quick measurements in the field and provision of data suitable for screening analyses. This work evaluates the potential of using available handheld, modular, and laboratory Raman spectrometers for screening normal colon tissues and benign and malignant colon polyps. The Raman spectra of tissue samples and reference biological macromolecules were measured with these instruments and analyzed using curve fitting and multivariate statistics. The spectra of calf thymus DNA

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Liu, Fuchao, and Fan Yi. "Spectrally-Resolved Raman Lidar to Measure Atmospheric Three-Phase Water Simultaneously." EPJ Web of Conferences 237 (2020): 06017. http://dx.doi.org/10.1051/epjconf/202023706017.

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We report on a spectrally-resolved Raman lidar that can simultaneously profile backscattered Raman spectrum signals from water vapor, water droplets and ice crystals as well as aerosol fluorescence in the atmosphere. The lidar emits a 354.8-nm ultraviolet laser radiation and samples echo signals in the 393.0-424.0 nm wavelength range with a 1.0-nm spectral resolution. A spectra decomposition method is developed to retrieve fluorescence spectra, water vapor Raman spectra and condensed (liquid and/or ice) water Raman spectra successively. Based on 8 different clear-sky nighttime measurement resu

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Booksh, Karl S., Christopher M. Stellman, Wendy C. Bell, and Michael L. Myrick. "Mathematical Alignment of Wavelength-Shifted Optical Spectra for Qualitative and Quantitative Analysis." Applied Spectroscopy 50, no. 2 (1996): 139–47. http://dx.doi.org/10.1366/0003702963906500.

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A multivariate method for aligning Raman spectra that suffer from spectral shifts resultant from diode laser mode-hopping is presented. This alignment method permits accurate alignment without necessitating a consistent reference peak while avoiding the uncertainties of estimating the maxima of broad or noisy peaks. This method differs from multivariate standardization methods in that the training set needs to be measured only once. The spectra are not compared to the spectra of a separate instrument. It is shown that the alignment enhances the performance of Raman spectroscopy for quantitativ

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Садагов, А. Ю., Т. А. Гойдина, В. А. Асеев та ін. "Меры на основе стекол, активированных ионами редкоземельных элементов, для калибровки флуоресцентных и рамановских спектрометров". Журнал технической физики 128, № 10 (2020): 1535. http://dx.doi.org/10.21883/os.2020.10.50028.145-20.

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The results of the development of fluorescence reference materials based on phosphate matrix glasses activated by rare-earth metal ions are presented. Reference materials are intended for spectral correction of emission spectra, systematic monitoring of sensitivity fluctuations of spectrofluorimeters. The possibility of their use for calibrating Raman spectrometer is being considered.

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De Gelder, Joke, Kris De Gussem, Peter Vandenabeele, and Luc Moens. "Reference database of Raman spectra of biological molecules." Journal of Raman Spectroscopy 38, no. 9 (2007): 1133–47. http://dx.doi.org/10.1002/jrs.1734.

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de Veij, Marleen, Peter Vandenabeele, Thomas De Beer, Jean Paul Remon, and Luc Moens. "Reference database of Raman spectra of pharmaceutical excipients." Journal of Raman Spectroscopy 40, no. 3 (2009): 297–307. http://dx.doi.org/10.1002/jrs.2125.

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Queiroz, Ana Luiza P., Brian M. Kerins, Jayprakash Yadav, et al. "Investigating microcrystalline cellulose crystallinity using Raman spectroscopy." Cellulose 28, no. 14 (2021): 8971–85. http://dx.doi.org/10.1007/s10570-021-04093-1.

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AbstractMicrocrystalline cellulose (MCC) is a semi-crystalline material with inherent variable crystallinity due to raw material source and variable manufacturing conditions. MCC crystallinity variability can result in downstream process variability. The aim of this study was to develop models to determine MCC crystallinity index (%CI) from Raman spectra of 30 commercial batches using Raman probes with spot sizes of 100 µm (MR probe) and 6 mm (PhAT probe). A principal component analysis model separated Raman spectra of the same samples captured using the different probes. The %CI was determine

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Perez-Pueyo, R., M. J. Soneira, M. Castanys, and S. Ruiz-Moreno. "Fuzzy Approach for Identifying Artistic Pigments with Raman Spectroscopy." Applied Spectroscopy 63, no. 8 (2009): 947–57. http://dx.doi.org/10.1366/000370209788964412.

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In this work, a fuzzy approach for automatically identifying artistic pigments from their Raman spectra is presented. The uncertainty introduced during the Raman spectrum measurement of pigments is considered in the design of the fuzzy system. The position of the Raman bands in the unknown spectrum can be subject to small displacements due to noise, misalignments in the calibration, etc. Fuzzy logic allows us to work with this uncertainty and to design a system based on the comparison between the Raman band positions in an unknown spectrum recorded from an artwork and the Raman band positions

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Tsujimori, Kota, Jun Hirotani, and Shunta Harada. "Application of Bayesian Super-Resolution to Spectroscopic Data for Precise Characterization of Spectral Peak Shape." Journal of Electronic Materials 51, no. 2 (2022): 712–17. http://dx.doi.org/10.1007/s11664-021-09326-4.

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AbstractThe number of data points of digitally recorded spectra have been limited by the number of multichannel detectors employed, which sometimes impedes the precise characterization of spectral peak shape. Here we describe a methodology to increase the number of data points as well as the signal-to-noise (S/N) ratio by applying Bayesian super-resolution in the analysis of spectroscopic data. In our present method, first, the hyperparameters for the Bayesian super-resolution are determined by a virtual experiment imitating actual experimental data, and the precision of the super-resolution r

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Kwiatkowski, Andrzej, Marcin Gnyba, Janusz Smulko, and Paweł Wierzba. "Algorithms of Chemicals Detection Using Raman Spectra." Metrology and Measurement Systems 17, no. 4 (2010): 549–59. http://dx.doi.org/10.2478/v10178-010-0045-1.

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Algorithms of Chemicals Detection Using Raman SpectraRaman spectrometers are devices which enable fast and non-contact identification of examined chemicals. These devices utilize the Raman phenomenon to identify unknown and often illicit chemicals (e.g.drugs, explosives) without the necessity of their preparation. Now, Raman devices can be portable and therefore can be more widely used to improve security at public places. Unfortunately, Raman spectra measurements is a challenge due to noise and interferences present outside the laboratories. The design of a portable Raman spectrometer develop

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Book chapters on the topic "Reference Raman spectra"

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Chukanov, Nikita V., and Marina F. Vigasina. "IR Spectra of Minerals and Related Compounds, and Reference Samples Data." In Vibrational (Infrared and Raman) Spectra of Minerals and Related Compounds. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26803-9_2.

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"Raman Reference Material Spectra and Tables." In The Concise Handbook of Analytical Spectroscopy: Theory, Applications, and Reference Materials. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813149540_0008.

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"Data Acquisition for Raman Spectra." In The Concise Handbook of Analytical Spectroscopy: Theory, Applications, and Reference Materials. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813149540_0005.

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Compton, Robert N., and Michael A. Duncan. "Multiphoton Ionization and Third Harmonic Generation in Alkali Atoms." In Laser Experiments for Chemistry and Physics, Second Edition, 2nd ed. Oxford University PressOxford, 2024. https://doi.org/10.1093/oso/9780198900825.003.0016.

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Abstract Experiments involving resonantly enhanced multiphoton ionization (REMPI) of alkali atoms contained in a heat pipe are discussed with reference to the quantum defect theory modification of the hydrogen atom energy levels. Quantum defects for the ns and nd levels are extracted from the data. This experiment is an excellent introduction to atomic spectroscopy and the selection rules involved. Ionization potentials are extracted from the Rydberg spectra. In the second part of this chapter a Raman shifter is employed to produce IR photons for multiphoton excitation of the low-lying p state

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NYQUIST, R. "References." In Interpreting Infrared, Raman, and Nuclear Magnetic Resonance Spectra. Elsevier, 2001. http://dx.doi.org/10.1016/b978-012523475-7/50164-9.

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"Applications and Spectral Examples for Raman Spectroscopy." In The Concise Handbook of Analytical Spectroscopy: Theory, Applications, and Reference Materials. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813149540_0007.

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Conference papers on the topic "Reference Raman spectra"

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Silva, Elaine F., Luciene S. Santos, Merlin C. E. Bandeira, et al. "Raman and FT-IR Based Methodology Development to Assess Flexible Pipelines Pressure Barrier Degradation in Offshore Installations of the Oil and Gas Industry." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18997.

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Abstract The recommended standard technique for monitoring the degradation of polyamide 12 (PA-12) is viscosimetry, through measurements of inherent viscosity (IV) to obtain the values of Corrected Inherent Viscosity (CIV). The CIV values were used as reference to correlate with Raman and IR results. PA-12 pristine samples and those submitted to ageing in reactors with controlled pressure and supercritical CO2 conditions were analyzed. The specimens were immersed in mineral water (pH 4.0), at a temperature of 120 °C for a period of up to 45 days. From the Raman spectra the νasCH2 vibration at

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Witek, Henryk A., Ankit Raj, and Yen-Bang Chao. "Toward quantitative Raman spectroscopy." In 2nd International Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.022w.

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Raman spectra recorded using various Raman spectrometers can be quite different. The main reason for those discrepancies is the lack of a consistent calibration scheme. Our work over the past few years was devoted to finding a universal absolute calibration scheme of Raman apparatuses that would allow us to report consistent Raman spectra of molecules with an absolute intensity scale. The reported scheme is based on a carefully designed home-built Raman spectrometer, for which the conceivable sources of experimental errors have been included in the analysis, and hence eliminated. The experimen

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Marković, Svetlana, and Jelena Tošović. "CHLOROGENIC ACID – APPLICATION OF CONTEMPORARY DENSITY FUNCTIONALS TO A SINGLE MOLECULE." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac,, 2021. http://dx.doi.org/10.46793/iccbi21.081m.

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Although chlorogenic acid (5-O-caffeoylquinic acid, 5CQA) is a dietary phenol known for its pharmacological and nutritional properties, its structural features and mechanisms of oxidative action have not been completely elucidated. Clarification of the 5CQA structure was conducted by comparing the experimental and simulated IR, Raman, 1H-NMR, 13C-NMR, and UV spectra. For this purpose, a comprehensive conformational analysis of 5CQA was performed to reveal its most stable conformations in the gas-state and solution. Excellent agreement between all experimental and simulated spectra indicates co

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EL OMARI, Mohamed. "Structural Characterization of Stone Flooring “Calçada Marble”, in Lisbon, Portugal." In Mediterranean Architectural Heritage. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903117-31.

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Abstract. The Lisbon "Calçada" sidewalks have a traditional style made of small flat and irregular cobblestones, representing magnificent mosaics. This work presents the characterization and identification of the mineralogical phases of sidewalk stones, originating from Lisbon, Portugal. Samples referenced MEKPBL (white) and MEKPNL (grey-black) were studied by means of Raman spectroscopy, ATR-FTIR and XRD. All Raman spectra show a strong band around 1089 cm-1 which can be attributed to the v1-symmetric stretching mode of (CO3)2-, indicating that calcite is the main crystal phase in both sample

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Yandow, A., and C. X. Yu. "Raman Gain Measurements at the Boson Peak in Phosphosilicate Fiber." In Advanced Solid State Lasers. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/assl.2023.jm4a.1.

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Stimulated Raman gain measurements taken at the boson peak (3.6 THz) line in a phosphosilicate fiber referenced in recent studies are presented and a discrepancy with the gain spectrum referenced in other studies is resolved.

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Ortega Clavero, Valentin, Andreas Weber, Werner Schröder, and Dan Curticapean. "Potential use of the characteristic Raman lines of toluene (C7H8) as a reference on the spectral analysis of fuel blends." In SPIE Optical Metrology, edited by Peter Lehmann, Wolfgang Osten, and Armando Albertazzi Gonçalves. SPIE, 2015. http://dx.doi.org/10.1117/12.2185100.

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Ortega Clavero, Valentin, Nicolas Javahiraly, Andreas Weber, Werner Schröder, Dan Curticapean, and Patrick Meyrueis. "Use of the characteristic Raman lines of toluene (C7H8) as a precise frequency reference on the spectral analysis of gasoline-ethanol blends." In SPIE Optical Engineering + Applications, edited by Alex A. Kazemi, Bernard C. Kress, and Edgar A. Mendoza. SPIE, 2014. http://dx.doi.org/10.1117/12.2064371.

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