1
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Koskela J, Sutton JJ, Lipiäinen T, Gordon KC, Strachan CJ, Fraser-Miller SJ. Low- versus Mid-frequency Raman Spectroscopy for in Situ Analysis of Crystallization in Slurries. Mol Pharm 2022; 19:2316-2326. [PMID: 35503753 PMCID: PMC9257757 DOI: 10.1021/acs.molpharmaceut.2c00126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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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 environments.
While the mid-frequency region (400–4000 cm–1) is dominated by intramolecular vibrations and has traditionally
been used for such studies, the low-frequency spectral region (<200
cm–1) probes solid-state related lattice vibrations
and is potentially more valuable for understanding subtle and/or complex
crystallization behavior. The aim of the study was to investigate
low-frequency Raman spectroscopy for in situ monitoring
of crystallization of an amorphous pharmaceutical in slurries for
the first time and directly compare the results with those simultaneously
obtained with mid-frequency Raman spectroscopy. Amorphous indomethacin
(IND) slurries were prepared at pH 1.2 and continuously monitored in situ at 5 and 25 °C with both low- and mid-frequency
Raman spectroscopy. At 25 °C, both spectral regions profiled
amorphous IND in slurries as converting directly from the amorphous
form toward the α crystalline form. In contrast, at 5 °C,
principal component analysis revealed a divergence in the detected
conversion profiles: the mid-frequency Raman suggested a direct conversion
to the α crystalline form, but the low-frequency region showed
additional transition points. These were attributed to the appearance
of minor amounts of the ε-form. The additional solid-state sensitivity
of the low-frequency region was attributed to the better signal-to-noise
ratio and more consistent spectra in this region. Finally, the low-frequency
Raman spectrum of the ε-form of IND is reported for the first
time.
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Affiliation(s)
- Jaana Koskela
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Joshua J Sutton
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Tiina Lipiäinen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Keith C Gordon
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Clare J Strachan
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Sara J Fraser-Miller
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
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2
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Zhang H, Wang X, Yu HB, Douglas JF. Fast dynamics in a model metallic glass-forming material. J Chem Phys 2021; 154:084505. [DOI: 10.1063/5.0039162] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Xinyi Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Hai-Bin Yu
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Jack F. Douglas
- Material Measurement Laboratory, Material Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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3
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Abstract
Brillouin spectroscopy and imaging are emerging techniques in analytical science, biophotonics, and biomedicine. They are based on Brillouin light scattering from acoustic waves or phonons in the GHz range, providing a nondestructive contactless probe of the mechanics on a microscale. Novel approaches and applications of these techniques to the field of biomedical sciences are discussed, highlighting the theoretical foundations and experimental methods that have been developed to date. Acknowledging that this is a fast moving field, a comprehensive account of the relevant literature is critically assessed here.
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Affiliation(s)
- Francesca Palombo
- School
of Physics and Astronomy, University of
Exeter, Stocker Road, EX4 4QL Exeter, U.K.
| | - Daniele Fioretto
- Department
of Physics and Geology, University of Perugia, via Alessandro Pascoli, I-06123 Perugia, Italy
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4
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Lima TA, Ribeiro MCC. Low-frequency Raman spectra of a glass-forming ionic liquid at low temperature and high pressure. J Chem Phys 2019; 150:164502. [PMID: 31042905 DOI: 10.1063/1.5094724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The frequency range below ∼100 cm-1 of the Raman spectrum of a glass-forming liquid exhibits two features that characterize the short-time (THz) dynamics: the quasi-elastic scattering (QES) tail and the boson peak (BP). In this work, we follow temperature and pressure effects on the intermolecular dynamics of a typical ionic liquid, 1-butyl-1-methylpiperidinium bis(trifluoromethanesulfonyl)imide, [Pip14][[NTf2]. The glass transition temperature of [Pip14][[NTf2] at atmospheric pressure is Tg = 198 K, and the pressure of glass transition at room temperature is Pg = 1.1 GPa. Raman spectra obtained while cooling the liquid or heating the glass exhibit hysteresis in QES and BP intensities, IQES and IBP. The dependence of IQES, IBP, and the BP frequency, ωBP, with pressure up to the glass transition is steeper than the temperature dependence due to the stronger pressure effect on density within the GPa range. The temperature and pressure behaviors of the parameters IQES, IBP, and ωBP obtained here for [Pip14][[NTf2] are discussed in light of known results for other glass-formers.
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Affiliation(s)
- Thamires A Lima
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Mauro C C Ribeiro
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
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5
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Giuntoli A, Leporini D. Boson Peak Decouples from Elasticity in Glasses with Low Connectivity. PHYSICAL REVIEW LETTERS 2018; 121:185502. [PMID: 30444381 DOI: 10.1103/physrevlett.121.185502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/07/2018] [Indexed: 06/09/2023]
Abstract
We perform molecular-dynamics simulations of the vibrational and elastoplastic properties of polymeric glasses and crystals and the corresponding atomic systems. We evidence that the elastic scaling of the density of states in the low-frequency boson peak (BP) region is different in crystals and glasses. Also, we see that the BP of the polymeric glass is nearly coincident with the one of the atomic glasses, thus revealing that the former-unlike the elasticity-is controlled by nonbonding interactions only. Our results suggest that the interpretation of the BP in terms of the macroscopic elasticity, discussed in highly connected systems, does not hold for systems with low connectivity.
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Affiliation(s)
- A Giuntoli
- Dipartimento di Fisica "Enrico Fermi," Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
| | - D Leporini
- Dipartimento di Fisica "Enrico Fermi," Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy and Istituto per i Processi Chimico-Fisici-Consiglio Nazionale delle Ricerche (IPCF-CNR), via Giuseppe Moruzzi 1, I-56124 Pisa, Italy
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6
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Milkus R, Ness C, Palyulin VV, Weber J, Lapkin A, Zaccone A. Interpretation of the Vibrational Spectra of Glassy Polymers Using Coarse-Grained Simulations. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02352] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Rico Milkus
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Christopher Ness
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Vladimir V. Palyulin
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Jana Weber
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Alexei Lapkin
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Alessio Zaccone
- Department of Chemical Engineering
and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
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7
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Mattana S, Mattarelli M, Urbanelli L, Sagini K, Emiliani C, Serra MD, Fioretto D, Caponi S. Non-contact mechanical and chemical analysis of single living cells by microspectroscopic techniques. LIGHT, SCIENCE & APPLICATIONS 2018; 7:17139. [PMID: 30839528 PMCID: PMC6060066 DOI: 10.1038/lsa.2017.139] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 09/23/2017] [Accepted: 10/08/2017] [Indexed: 05/04/2023]
Abstract
Innovative label-free microspectroscopy, which can simultaneously collect Brillouin and Raman signals, is used to characterize the viscoelastic properties and chemical composition of living cells with sub-micrometric resolution. The unprecedented statistical accuracy of the data combined with the high-frequency resolution and the high contrast of the recently built experimental setup permits the study of single living cells immersed in their buffer solution by contactless measurements. The Brillouin signal is deconvoluted in the buffer and the cell components, thereby revealing the mechanical heterogeneity inside the cell. In particular, a 20% increase is observed in the elastic modulus passing from the plasmatic membrane to the nucleus as distinguished by comparison with the Raman spectroscopic marker. Brillouin line shape analysis is even more relevant for the comparison of cells under physiological and pathological conditions. Following oncogene expression, cells show an overall reduction in the elastic modulus (15%) and apparent viscosity (50%). In a proof-of-principle experiment, the ability of this spectroscopic technique to characterize subcellular compartments and distinguish cell status was successfully tested. The results strongly support the future application of this technique for fundamental issues in the biomedical field.
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Affiliation(s)
- Sara Mattana
- Department of Physics and Geology, University of Perugia, Perugia I-06123, Italy
| | - Maurizio Mattarelli
- Department of Physics and Geology, University of Perugia, Perugia I-06123, Italy
| | - Lorena Urbanelli
- Laboratory of Biochemistry and Molecular Biology, Department of Chemistry, Biology and Biotechnology, University of Perugia, via del Giochetto, Perugia I-06123, Italy
| | - Krizia Sagini
- Laboratory of Biochemistry and Molecular Biology, Department of Chemistry, Biology and Biotechnology, University of Perugia, via del Giochetto, Perugia I-06123, Italy
| | - Carla Emiliani
- Laboratory of Biochemistry and Molecular Biology, Department of Chemistry, Biology and Biotechnology, University of Perugia, via del Giochetto, Perugia I-06123, Italy
- CEMIN-Center of Excellence for Innovative Nanostructured Material, Perugia I-06123, Italy
| | - Mauro Dalla Serra
- Istituto di Biofisica CNR (IBF-CNR), Unità di Trento, and FBK, Via Sommarive 18, Trento 38123, Italy
| | - Daniele Fioretto
- Department of Physics and Geology, University of Perugia, Perugia I-06123, Italy
- CEMIN-Center of Excellence for Innovative Nanostructured Material, Perugia I-06123, Italy
| | - Silvia Caponi
- Istituto Officina dei Materiali del CNR (CNR-IOM)—Unità di Perugia, c/o Department of Physics and Geology, University of Perugia, Perugia I-06123, Italy
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8
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Venuti V, Rossi B, Mele A, Melone L, Punta C, Majolino D, Masciovecchio C, Caldera F, Trotta F. Tuning structural parameters for the optimization of drug delivery performance of cyclodextrin-based nanosponges. Expert Opin Drug Deliv 2016; 14:331-340. [DOI: 10.1080/17425247.2016.1215301] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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9
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Caponi S, Corezzi S, Mattarelli M, Fioretto D. Stress effects on the elastic properties of amorphous polymeric materials. J Chem Phys 2014; 141:214901. [DOI: 10.1063/1.4902060] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. Caponi
- Istituto Officina dei Materiali del CNR (CNR-IOM) - Unità di Perugia, c/o Dipartimento di Fisica e Geologia, Perugia I-06100, Italy
| | - S. Corezzi
- Dipartimento di Fisica e Geologia, Università di Perugia, Via A. Pascoli, I-06100 Perugia, Italy
- CNR-ISC (Istituto dei Sistemi Complessi), c/o Università di Roma “LaSapienza,” Piazzale A. Moro 2, I-00185 Roma, Italy
| | - M. Mattarelli
- NiPS Laboratory, Dipartimento di Fisica e Geologia, Università di Perugia, Via A. Pascoli, I-06100 Perugia, Italy
| | - D. Fioretto
- Dipartimento di Fisica e Geologia, Università di Perugia, Via A. Pascoli, I-06100 Perugia, Italy
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10
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Pérez-Castañeda T, Jiménez-Riobóo RJ, Ramos MA. Two-level systems and boson peak remain stable in 110-million-year-old amber glass. PHYSICAL REVIEW LETTERS 2014; 112:165901. [PMID: 24815658 DOI: 10.1103/physrevlett.112.165901] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Indexed: 06/03/2023]
Abstract
The two most prominent and ubiquitous features of glasses at low temperatures, namely the presence of tunneling two-level systems and the so-called boson peak in the reduced vibrational density of states, are shown to persist essentially unchanged in highly stabilized glasses, contrary to what was usually envisaged. Specifically, we have measured the specific heat of 110 million-year-old amber samples from El Soplao (Spain), both at very low temperatures and around the glass transition Tg. In particular, the amount of two-level systems, assessed at the lowest temperatures, was surprisingly found to be exactly the same for the pristine hyperaged amber as for the, subsequently, partially and fully rejuvenated samples.
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Affiliation(s)
- Tomás Pérez-Castañeda
- Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC) and Instituto Nicolás Cabrera, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
| | - Rafael J Jiménez-Riobóo
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), E-28049 Madrid, Spain
| | - Miguel A Ramos
- Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC) and Instituto Nicolás Cabrera, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
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11
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Crupi V, Fontana A, Giarola M, Longeville S, Majolino D, Mariotto G, Mele A, Paciaroni A, Rossi B, Trotta F, Venuti V. Vibrational Density of States and Elastic Properties of Cross-Linked Polymers: Combining Inelastic Light and Neutron Scattering. J Phys Chem B 2014; 118:624-33. [DOI: 10.1021/jp410448y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Vincenza Crupi
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Aldo Fontana
- Department
of Physics, University of Trento, Via Sommarive 14, 38123 Povo, Trento, Italy
| | - Marco Giarola
- Department
of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
| | - Stéphane Longeville
- Laboratoire Léon
Brillouin (CEA/CNRS), CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Domenico Majolino
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Gino Mariotto
- Department
of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
| | - Andrea Mele
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
| | - Alessandro Paciaroni
- Department
of Physics, University of Perugia, Via A. Pascoli, 06123 Perugia, Italy
| | - Barbara Rossi
- Department
of Physics, University of Trento, Via Sommarive 14, 38123 Povo, Trento, Italy
| | - Francesco Trotta
- Dipartimento
di Chimica, Università di Torino, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Valentina Venuti
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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12
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Corezzi S, Caponi S, Rossi F, Fioretto D. Stress-Induced Modification of the Boson Peak Scaling Behavior. J Phys Chem B 2013; 117:14477-85. [DOI: 10.1021/jp4054742] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Silvia Corezzi
- Dipartimento
di Fisica, Universitá di Perugia, Via A. Pascoli, Perugia 06123, Italy
| | - Silvia Caponi
- Dipartimento
di Fisica, Universitá di Trento, Via Sommarive 14, Povo (Trento) 38123, Italy
- IOM-CNR
c/o Dipartimento di Fisica, Universitá di Perugia, Via A. Pascoli, Perugia 06123, Italy
| | - Flavio Rossi
- Dipartimento
di Fisica, Universitá di Trento, Via Sommarive 14, Povo (Trento) 38123, Italy
| | - Daniele Fioretto
- Dipartimento
di Fisica, Universitá di Perugia, Via A. Pascoli, Perugia 06123, Italy
- Centro
di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Universitá di Perugia, via Elce di Sotto 8, Perugia 06123, Italy
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13
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Marruzzo A, Schirmacher W, Fratalocchi A, Ruocco G. Heterogeneous shear elasticity of glasses: the origin of the boson peak. Sci Rep 2013; 3:1407. [PMID: 23470597 PMCID: PMC3591752 DOI: 10.1038/srep01407] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 02/19/2013] [Indexed: 11/09/2022] Open
Abstract
The local elasticity of glasses is known to be inhomogeneous on a microscopic scale compared to that of crystalline materials. Their vibrational spectrum strongly deviates from that expected from Debye's elasticity theory: The density of states deviates from Debye's law, the sound velocity shows a negative dispersion in the boson-peak frequency regime and there is a strong increase of the sound attenuation near the boson-peak frequency. By comparing a mean-field theory of shear-elastic heterogeneity with a large-scale simulation of a soft-sphere glass we demonstrate that the observed anomalies in glasses are caused by elastic heterogeneity. By observing that the macroscopic bulk modulus is frequency independent we show that the boson-peak-related vibrational anomalies are predominantly due to the spatially fluctuating microscopic shear stresses. It is demonstrated that the boson-peak arises from the steep increase of the sound attenuation at a frequency which marks the transition from wave-like excitations to disorder-dominated ones.
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Affiliation(s)
- Alessia Marruzzo
- Dipartimento di Fisica, Universitá di Roma La Sapienza, Roma, Italy
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14
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Pérez-Castañeda T, Jiménez Riobóo RJ, Ramos MA. Low-temperature thermal properties of a hyperaged geological glass. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:295402. [PMID: 23817920 DOI: 10.1088/0953-8984/25/29/295402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have measured the specific heat of amber from the Dominican Republic, an ancient geological glass about 20 million years old, in the low-temperature range 0.6 K ≤ T ≤ 26 K, in order to assess the effects of its natural stabilization (hyperageing) process on the low-temperature glassy properties, i.e. boson peak and two-level systems. We have also conducted modulated differential scanning calorimetry experiments to characterize the thermodynamic state of our samples. We found that calorimetric curves exhibit a huge ageing signal ΔH ≈ 5 J g(-1) in the first upscan at the glass transition Tg = 389 K, that completely disappears after heating up (rejuvenating) the sample to T = 395 K for 3 h. To independently evaluate the phonon contribution to the specific heat, Brillouin spectroscopy was performed in the temperature range 80 K ≤ T ≤ 300 K. An expected increase in the Debye level was observed after rejuvenating the Dominican amber. However, no significant change was observed in the low-temperature specific heat of glassy amber after erasing its thermal history: both its boson peak (i.e., the maximum in the Cp/T(3) representation) and the density of tunnelling two-level systems (i.e., the Cp ∼ T contribution at the lowest temperatures) remained essentially the same. Also, a consistent analysis using the soft-potential model of our Cp data and earlier thermal-conductivity data found in the literature further supports our main conclusion, namely, that these glassy 'anomalous' properties at low temperatures remain essentially invariant after strong relaxational processes such as hyperageing.
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Affiliation(s)
- Tomás Pérez-Castañeda
- Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC) and Instituto Nicolás Cabrera, Universidad Autónoma de Madrid, E-28049 Madrid, Spain.
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15
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The Action of Ligands in the Aggregation Process of Soft Colloidal Solution Monitored by Raman Spectroscopy. FOOD BIOPHYS 2013. [DOI: 10.1007/s11483-013-9303-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Comez L, Lupi L, Morresi A, Paolantoni M, Sassi P, Fioretto D. More Is Different: Experimental Results on the Effect of Biomolecules on the Dynamics of Hydration Water. J Phys Chem Lett 2013; 4:1188-1192. [PMID: 26282040 DOI: 10.1021/jz400360v] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biological interfaces characterized by a complex mixture of hydrophobic, hydrophilic, or charged moieties interfere with the cooperative rearrangement of the hydrogen-bond network of water. In the present study, this solute-induced dynamical perturbation is investigated by extended frequency range depolarized light scattering experiments on an aqueous solution of a variety of systems of different nature and complexity such as small hydrophobic and hydrophilic molecules, amino acids, dipeptides, and proteins. Our results suggest that a reductionist approach is not adequate to describe the rearrangement of hydration water because a significant increase of the dynamical retardation and extension of the perturbation occurs when increasing the chemical complexity of the solute.
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Affiliation(s)
- Lucia Comez
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Laura Lupi
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Assunta Morresi
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Marco Paolantoni
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Paola Sassi
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Daniele Fioretto
- †Dipartimento di Fisica and ‡IOM-CNR c/o Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy
- §Dipartimento di Chimica and ⊥Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy
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17
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Crupi V, Fontana A, Giarola M, Guella G, Majolino D, Mancini I, Mariotto G, Paciaroni A, Rossi B, Venuti V. Cyclodextrin-Complexation Effects on the Low-Frequency Vibrational Dynamics of Ibuprofen by Combined Inelastic Light and Neutron Scattering Experiments. J Phys Chem B 2013; 117:3917-26. [DOI: 10.1021/jp400509r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vincenza Crupi
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Aldo Fontana
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
- IPCF CNR, UOS Roma, I-00185 Roma, Italy
| | - Marco Giarola
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Graziano Guella
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
| | - Domenico Majolino
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Ines Mancini
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
| | - Gino Mariotto
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Alessandro Paciaroni
- Department of Physics, University of Perugia, Via A. Pascoli, 06123 Perugia,
Italy
| | - Barbara Rossi
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Valentina Venuti
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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18
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Crupi C, D'Angelo G, Vasi C. Low-energy vibrational dynamics of cesium borate glasses. J Phys Chem B 2012; 116:6499-505. [PMID: 22546082 DOI: 10.1021/jp301230s] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Low-temperature specific heat and inelastic light scattering experiments have been performed on a series of cesium borate glasses and on a cesium borate crystal. Raman measurements on the crystalline sample have revealed the existence of cesium rattling modes in the same frequency region where glasses exhibit the boson peak (BP). These localized modes are supposed to overlap with the BP in cesium borate glasses affecting its magnitude. Their influence on the low frequency vibrational dynamics in glassy samples has been considered, and their contribution to the specific heat has been estimated. Evidence for a relation between the changes of the BP induced by the increased amount of metallic oxide and the variations of the elastic medium has been provided.
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Affiliation(s)
- C Crupi
- Dipartimento di Fisica, Università di Messina, Viale F. Stagno d'Alcontres 31, I-98166 Messina, Italy.
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19
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Rossi B, Caponi S, Castiglione F, Corezzi S, Fontana A, Giarola M, Mariotto G, Mele A, Petrillo C, Trotta F, Viliani G. Networking Properties of Cyclodextrin-Based Cross-Linked Polymers Probed by Inelastic Light-Scattering Experiments. J Phys Chem B 2012; 116:5323-7. [DOI: 10.1021/jp302047u] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Barbara Rossi
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
| | - Silvia Caponi
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
- Istituto
di Biofisica, Consiglio Nazionale delle Ricerche, via alla Cascata
56/C, I-38123 Trento (Italy)
| | - Franca Castiglione
- Dipartimento di Chimica, Materiali
e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci 32, I-20133 Milano (Italy)
| | - Silvia Corezzi
- Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123
Perugia (Italy)
| | - Aldo Fontana
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
| | - Marco Giarola
- Dipartimento
di Informatica, Università di Verona, Strada le Grazie 15, I-37134
Verona (Italy)
| | - Gino Mariotto
- Dipartimento
di Informatica, Università di Verona, Strada le Grazie 15, I-37134
Verona (Italy)
| | - Andrea Mele
- Dipartimento di Chimica, Materiali
e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci 32, I-20133 Milano (Italy)
| | - Caterina Petrillo
- Istituto
di Biofisica, Consiglio Nazionale delle Ricerche, via alla Cascata
56/C, I-38123 Trento (Italy)
- Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123
Perugia (Italy)
| | - Francesco Trotta
- Dipartimento di
Chimica IFM, Università di Torino, Via Pietro Giuria 7, I-10125
Torino (Italy)
| | - Gabriele Viliani
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
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20
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Caponi S, Corezzi S, Fioretto D, Fontana A, Rossi F. Effect of elastic properties modification on the vibrational density of states: A joint Brillouin and Raman scattering study. J Appl Polym Sci 2011. [DOI: 10.1002/app.34780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Khouri J, Johari GP. Kinetics of polymerization of a liquid with nanosize structural heterogeneities. J Phys Chem B 2011; 115:13489-501. [PMID: 21962116 DOI: 10.1021/jp2071343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the effects of chemically reacting, nanometer-size structural heterogeneity on a polymerization process. Heterogeneity is introduced by adding 2 nm size molecules of polyhedral oligomeric silsesquioxane with multiepoxide groups (POSS) while maintaining stoichiometry of a polymerizing triamine-diepoxide mixture. Calorimetric studies show that POSS addition first increases the polymerization rate and then decreases it progressively more. In the presence of nanometer-scale structural heterogeneity, diffusion-controlled kinetics begins sooner in time. The enthalpy of polymerization decreases with the amount of POSS heterogeneity according to the mixture rule; the glass-liquid transition endotherm of the partially polymerized state becomes broader, and the enthalpy of post polymerization decreases. The POSS-alone mixture polymerizes relatively slower, and the glass-liquid transition exotherm of the polymerized state is indistinguishably broad. Both are attributed to the distribution of diffusion rates or dispersive kinetics, and the development of dynamic heterogeneity more rapidly for the POSS-only mixture than for others. Increase in the polymerization rate on initial addition of nanometer-size POSS and then decrease on further addition is explained in terms of decoupling of diffusion from viscous flow, that is, when the diffusion rate decreases less rapidly with the polymerization time than the viscosity increases.
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Affiliation(s)
- Joseph Khouri
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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22
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Zanatta M, Baldi G, Caponi S, Fontana A, Petrillo C, Rossi F, Sacchetti F. Debye to non-Debye scaling of the Boson peak dynamics: Critical behavior and local disorder in vitreous germania. J Chem Phys 2011; 135:174506. [DOI: 10.1063/1.3656697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Ziobrowski P, Nowicka A, Andrzejewska E, Marcinkowska A, Drozdowski M. Brillouin study of photopolymerization process of two-monomer systems. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:815-818. [PMID: 20926336 DOI: 10.1016/j.saa.2010.08.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 04/23/2010] [Accepted: 08/26/2010] [Indexed: 05/30/2023]
Abstract
The results of Brillouin scattering investigations of two-component system: 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane/polyethylene glycol methacrylate (bis-GMA/PEGMM) containing 0, 30, 50, 70, 85 and 100 mol% of PEGMM are presented. For the first time the Brillouin spectroscopy was used to monitor the progress of the polymerization process. The polymerization was initiated by ultraviolet radiation (λ=365 nm), at temperature 20°C and 40°C. Some of the physical parameters characteristic for this system such as velocity V, adiabatic compressibility β(ad) and attenuation coefficient α of the acoustic waves have been estimated from Brillouin spectra as a functions of the polymerization time. The obtained results have been discussed in terms of changes of the elastic properties of the two-component system occurring during polymerization process and their dependence on bis-GMA/PEGMM system composition.
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Affiliation(s)
- P Ziobrowski
- Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13A, 60-965 Poznan, Poland.
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24
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Deschamps T, Martinet C, de Ligny D, Bruneel JL, Champagnon B. Correlation between boson peak and anomalous elastic behavior in GeO2 glass: An in situ Raman scattering study under high-pressure. J Chem Phys 2011; 134:234503. [PMID: 21702563 DOI: 10.1063/1.3599939] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Deschamps
- Laboratoire de Physico-Chimie des Matériaux Luminescents, Domaine scientifique de la Doua, Université de Lyon, Université Lyon-1, UMR5620 CNRS, Bât. Kastler, 10 rue Ada Byron, 69622 Villeurbanne, France.
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25
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Chumakov AI, Monaco G, Monaco A, Crichton WA, Bosak A, Rüffer R, Meyer A, Kargl F, Comez L, Fioretto D, Giefers H, Roitsch S, Wortmann G, Manghnani MH, Hushur A, Williams Q, Balogh J, Parliński K, Jochym P, Piekarz P. Equivalence of the boson peak in glasses to the transverse acoustic van Hove singularity in crystals. PHYSICAL REVIEW LETTERS 2011; 106:225501. [PMID: 21702612 DOI: 10.1103/physrevlett.106.225501] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Indexed: 05/31/2023]
Abstract
We compare the atomic dynamics of the glass to that of the relevant crystal. In the spectra of inelastic scattering, the boson peak of the glass appears higher than the transverse acoustic (TA) singularity of the crystal. However, the density of states shows that they have the same number of states. Increasing pressure causes the transformation of the boson peak of the glass towards the TA singularity of the crystal. Once corrected for the difference in the elastic medium, the boson peak matches the TA singularity in energy and height. This suggests the identical nature of the two features.
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Affiliation(s)
- A I Chumakov
- European Synchrotron Radiation Facility, Grenoble, France.
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26
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Orsingher L, Fontana A, Gilioli E, Carini G, Carini G, Tripodo G, Unruh T, Buchenau U. Vibrational dynamics of permanently densified GeO2 glasses: Densification-induced changes in the boson peak. J Chem Phys 2010; 132:124508. [DOI: 10.1063/1.3360039] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Rufflé B, Ayrinhac S, Courtens E, Vacher R, Foret M, Wischnewski A, Buchenau U. Scaling the temperature-dependent boson peak of vitreous silica with the high-frequency bulk modulus derived from Brillouin scattering data. PHYSICAL REVIEW LETTERS 2010; 104:067402. [PMID: 20366853 DOI: 10.1103/physrevlett.104.067402] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Indexed: 05/29/2023]
Abstract
The position and strength of the boson peak in silica glass vary considerably with temperature T. Such variations cannot be explained solely with changes in the Debye energy. New Brillouin-scattering measurements are presented which allow determining the T dependence of unrelaxed acoustic velocities. Using a velocity based on the bulk modulus, scaling exponents are found which agree with the soft-potential model. The unrelaxed bulk modulus thus appears to be a good measure for the structural evolution of silica with T and to set the energy scale for the soft potentials.
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Affiliation(s)
- B Rufflé
- Laboratoire des Colloïdes, Verres et Nanomatériaux, UMR 5587 CNRS Université Montpellier II, F-34095 Montpellier Cedex 5, France
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28
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D’Angelo G, Crupi C, Tripodo G, Salvato G. Relation between Low-Temperature Thermal Conductivity and the Specific Heat of Cesium Borate Glasses. J Phys Chem B 2010; 114:2467-75. [DOI: 10.1021/jp907152y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. D’Angelo
- Dipartimento di Fisica, Universita’ di Messina, Salita Sperone 31, I-98166 Messina, Italy, and Istituto per i Processi Chimico−Fisici del C. N. R., Sezione di Messina, Salita Sperone, I-98166 Messina, Italy
| | - C. Crupi
- Dipartimento di Fisica, Universita’ di Messina, Salita Sperone 31, I-98166 Messina, Italy, and Istituto per i Processi Chimico−Fisici del C. N. R., Sezione di Messina, Salita Sperone, I-98166 Messina, Italy
| | - G. Tripodo
- Dipartimento di Fisica, Universita’ di Messina, Salita Sperone 31, I-98166 Messina, Italy, and Istituto per i Processi Chimico−Fisici del C. N. R., Sezione di Messina, Salita Sperone, I-98166 Messina, Italy
| | - G. Salvato
- Dipartimento di Fisica, Universita’ di Messina, Salita Sperone 31, I-98166 Messina, Italy, and Istituto per i Processi Chimico−Fisici del C. N. R., Sezione di Messina, Salita Sperone, I-98166 Messina, Italy
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29
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Baldi G, Fontana A, Monaco G, Orsingher L, Rols S, Rossi F, Ruta B. Connection between Boson peak and elastic properties in silicate glasses. PHYSICAL REVIEW LETTERS 2009; 102:195502. [PMID: 19518969 DOI: 10.1103/physrevlett.102.195502] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Indexed: 05/27/2023]
Abstract
Inelastic neutron, light, and x-ray scattering are used to investigate the vibrational density of states (VDOS) and the elastic properties of a sodium silicate glass as a function of temperature. The elastic moduli show the frequency and temperature dependence typical of anharmonic effects. The measured VDOS spectra, up to and including the excess vibrational density at the boson peak, scale with the Debye level only if this is calculated from the high-frequency values of the elastic constants. This emphasizes that conclusions on the relation between VDOS and elastic properties can be drawn only if anharmonic and relaxational effects are properly taken into account.
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Affiliation(s)
- G Baldi
- INFM-CNR CRS-SOFT Operative Group in Grenoble c/o E.S.R.F., BP220, 38043 Grenoble, France.
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