Articles with "frequency raman" as a keyword



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Stimulated low frequency Raman scattering in cupric oxide nanoparticles water suspension

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Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2016.12.016

Abstract: Abstract Cupric oxide nanoparticles with average size of 213.2 nm, were synthesized in acoustoplasma discharge for investigating their vibrational properties. The low-frequency acoustic mode in cupric oxide (CuO) nanoparticles has been studied by stimulated low-frequency Raman… read more here.

Keywords: frequency; oxide nanoparticles; stimulated low; cupric oxide ... See more keywords
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Low-Frequency Raman Spectroscopy as an Avenue to Determine the Transition Temperature of β- and γ-Relaxation in Pharmaceutical Glasses.

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Published in 2022 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.2c00371

Abstract: In an earlier investigation, low-frequency Raman (LFR) spectroscopy was shown to detect the transition temperature of the β-relaxation (Tβ) in both amorphous celecoxib and various celecoxib amorphous solid dispersions [Be̅rziņš, K. Mol. Pharmaceutics 2021, 18(10),… read more here.

Keywords: low frequency; spectroscopy; temperature; frequency raman ... See more keywords
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Real-time formation monitoring of cocrystals with a different stoichiometry using probe-type low-frequency Raman spectroscopy

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Published in 2017 at "Industrial & Engineering Chemistry Research"

DOI: 10.1021/acs.iecr.7b03141

Abstract: In the cocrystallization process, real-time monitoring is effective for obtaining cocrystal products with a consistent quality. Low-frequency Raman spectra reflect the lattice vibration derived from crystalline differences; therefore, Raman spectroscopy is expected to be useful… read more here.

Keywords: real time; spectroscopy; low frequency; raman spectroscopy ... See more keywords
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Monitoring the Isothermal Dehydration of Crystalline Hydrates Using Low-Frequency Raman Spectroscopy.

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Published in 2021 at "Molecular pharmaceutics"

DOI: 10.1021/acs.molpharmaceut.0c01126

Abstract: Detection of the solid-state forms of pharmaceutical compounds is important from the drug performance point of view. Low-frequency Raman (LFR) spectroscopy has been demonstrated to be very sensitive in detecting the different solid-state forms of… read more here.

Keywords: frequency; spectroscopy; low frequency; frequency raman ... See more keywords
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Low- versus Mid-frequency Raman Spectroscopy for in Situ Analysis of Crystallization in Slurries

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Published in 2022 at "Molecular Pharmaceutics"

DOI: 10.1021/acs.molpharmaceut.2c00126

Abstract: Slurry studies are useful for exhaustive polymorph and solid-state stability screening of drug compounds. Raman spectroscopy is convenient for monitoring crystallization in such slurries, as the measurements can be performed in situ even in aqueous… read more here.

Keywords: mid frequency; spectroscopy; frequency; frequency raman ... See more keywords
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CVD-Assisted Synthesis of 2D Layered MoSe2 on Mo Foil and Low Frequency Raman Scattering of Its Exfoliated Few-Layer Nanosheets on CaF2 Substrates

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.1c05652

Abstract: Transition-metal dichalcogenides (TMDCs) are unique layered materials with exotic properties. So, examining their structures holds tremendous importance. 2H-MoSe2 (analogous to MoS2; Gr. 6 TMDC) is a crucial optoelectronic material studied extensively using Raman spectroscopy. In… read more here.

Keywords: low frequency; spectroscopy; raman; frequency raman ... See more keywords
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Explanation and prediction for the selective crystallization of boscalid by mid-frequency Raman difference spectra analysis

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Published in 2023 at "CrystEngComm"

DOI: 10.1039/d2ce01679f

Abstract: The selective crystallization behaviours of amorphous boscalid (BOS), BOS monohydrate and acetone/ethyl acetate/ethanol/methanol solutions are explained and predicted by mid-frequency Raman difference spectra analysis. The phase transition processes including solutions... read more here.

Keywords: spectra analysis; mid frequency; raman difference; frequency raman ... See more keywords
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Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes

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Published in 2022 at "Journal of Analytical Methods in Chemistry"

DOI: 10.1155/2022/2694545

Abstract: In this study, a microscopy apparatus that can switch between the fluorescence microscopy and ultralow-frequency Raman microscopy modes was developed. The apparatus can be easily constructed by equipping a standard epi-illumination microscope with an additional… read more here.

Keywords: frequency raman; fluorescence; microscopy; ultralow frequency ... See more keywords
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Evaporative Crystallization of Simvastatin from Different Solutions Using Mid-Frequency Raman Difference Spectra Explanations.

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Published in 2023 at "Applied spectroscopy"

DOI: 10.1177/00037028231166950

Abstract: Amorphous simvastatin (amorphous SIM) and Form I of SIM were prepared separately from SIM acetone (AC)/ethyl acetate (ETAC)/ethanol (ET) solutions by simply controlling the solvent evaporation rate, and the kinetic formation of amorphous SIM from… read more here.

Keywords: raman difference; frequency raman; difference spectra; mid frequency ... See more keywords