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Journal articles on the topic 'Johari-Goldstein relaxation'

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Author: Grafiati

Published: 11 March 2023

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1

Thayyil, M. Shahin, S. Capaccioli, D. Prevosto, and K. L. Ngai. "Is the Johari-Goldstein β-relaxation universal?" Philosophical Magazine 88, no. 33-35 (November 21, 2008): 4007–13. http://dx.doi.org/10.1080/14786430802270082.

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2

Capaccioli, S., K. L. Ngai, and N. Shinyashiki. "The Johari−Goldstein β-Relaxation of Water." Journal of Physical Chemistry B 111, no. 28 (July 2007): 8197–209. http://dx.doi.org/10.1021/jp071857m.

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3

Cicerone, Marcus T., and Madhusudan Tyagi. "Metabasin transitions are Johari-Goldstein relaxation events." Journal of Chemical Physics 146, no. 5 (February 7, 2017): 054502. http://dx.doi.org/10.1063/1.4973935.

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4

HILFER, R. "ON FRACTIONAL RELAXATION." Fractals 11, supp01 (February 2003): 251–57. http://dx.doi.org/10.1142/s0218348x03001914.

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Generalized fractional relaxation equations based on generalized Riemann-Liouville derivatives are combined with a simple short time regularization and solved exactly. The solution involves generalized Mittag-Leffler functions. The associated frequency dependent susceptibilities are related to symmetrically broadened Cole-Cole susceptibilities occurring as Johari Goldstein β-relaxation in many glass formers. The generalized susceptibilities exhibit a high frequency wing and strong minimum enhancement.

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5

Redondo-Foj, Belén, María Jesús Sanchis, Pilar Ortiz-Serna, Marta Carsí, José Miguel García, and Félix Clemente García. "The effect of cross-linking on the molecular dynamics of the segmental and β Johari–Goldstein processes in polyvinylpyrrolidone-based copolymers." Soft Matter 11, no. 36 (2015): 7171–80. http://dx.doi.org/10.1039/c5sm00714c.

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The cross-linking effect on the molecular dynamics of vinylpyrrolidone (VP)/butyl acrylate (BA) copolymers is reflected in the α process, but more significantly in the β Johari–Goldstein (JG) relaxation.

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6

Kaminski, K., E. Kaminska, M. Paluch, J. Ziolo, and K. L. Ngai. "The True Johari−Goldstein β-Relaxation of Monosaccharides." Journal of Physical Chemistry B 110, no. 49 (December 2006): 25045–49. http://dx.doi.org/10.1021/jp064710o.

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7

Massa, Carlo Andrea, Francesco Puosi, and Dino Leporini. "Fractional Coupling of Primary and Johari–Goldstein Relaxations in a Model Polymer." Polymers 14, no. 24 (December 19, 2022): 5560. http://dx.doi.org/10.3390/polym14245560.

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A polymer model exhibiting heterogeneous Johari–Goldstein (JG) secondary relaxation is studied by extensive molecular-dynamics simulations of states with different temperature and pressure. Time–temperature–pressure superposition of the primary (segmental) relaxation is evidenced. The time scales of the primary and the JG relaxations are found to be highly correlated according to a power law. The finding agrees with key predictions of the Coupling Model (CM) accounting for the decay in a correlation function due to the relaxation and diffusion of interacting systems. Nonetheless, the exponent of the power law, even if it is found in the range predicted by CM (0<ξ<1), deviates from the expected one. It is suggested that the deviation could depend on the particular relaxation process involved in the correlation function and the heterogeneity of the JG process.

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8

Ngai, K. L., and M. Beiner. "Secondary Relaxation of the Johari−Goldstein Kind in Alkyl Nanodomains." Macromolecules 37, no. 21 (October 2004): 8123–27. http://dx.doi.org/10.1021/ma048645x.

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9

Ngai, K. L., S. Pawlus, K. Grzybowska, K. Kaminski, S. Capaccioli, and M. Paluch. "Does the Johari–Goldstein β-Relaxation Exist in Polypropylene Glycols?" Macromolecules 48, no. 12 (June 12, 2015): 4151–57. http://dx.doi.org/10.1021/acs.macromol.5b00832.

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10

Goldstein, Martin. "The past, present, and future of the Johari–Goldstein relaxation." Journal of Non-Crystalline Solids 357, no. 2 (January 2011): 249–50. http://dx.doi.org/10.1016/j.jnoncrysol.2010.05.105.

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11

Vij, J. K., and G. Power. "Physical ageing and the Johari–Goldstein relaxation in molecular glasses." Journal of Non-Crystalline Solids 357, no. 3 (February 2011): 783–92. http://dx.doi.org/10.1016/j.jnoncrysol.2010.07.067.

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12

Capaccioli, S., K. Kessairi, M. Shahin Thayyil, D. Prevosto, and M. Lucchesi. "The Johari–Goldstein β-relaxation of glass-forming binary mixtures." Journal of Non-Crystalline Solids 357, no. 2 (January 2011): 251–57. http://dx.doi.org/10.1016/j.jnoncrysol.2010.08.007.

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13

Tripodo, Antonio, Francesco Puosi, Marco Malvaldi, Simone Capaccioli, and Dino Leporini. "Coincident Correlation between Vibrational Dynamics and Primary Relaxation of Polymers with Strong or Weak Johari-Goldstein Relaxation." Polymers 12, no. 4 (March 31, 2020): 761. http://dx.doi.org/10.3390/polym12040761.

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The correlation between the vibrational dynamics, as sensed by the Debye-Waller factor, and the primary relaxation in the presence of secondary Johari-Goldstein (JG) relaxation, has been investigated through molecular dynamics simulations. Two melts of polymer chains with different bond length, resulting in rather different strength of the JG relaxation are studied. We focus on the bond-orientation correlation function, exhibiting higher JG sensitivity with respect to alternatives provided by torsional autocorrelation function and intermediate scattering function. We find that, even if changing the bond length alters both the strength and the relaxation time of the JG relaxation, it leaves unaffected the correlation between the vibrational dynamics and the primary relaxation. The finding is in harmony with previous studies reporting that numerical models not showing secondary relaxations exhibit striking agreement with experimental data of polymers also where the presence of JG relaxation is known.

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14

Singh, Abhishek K., and S. S. N. Murthy. "Johari–Goldstein relaxation in orientationally disordered phase of hexa-substituted benzenes." Thermochimica Acta 604 (March 2015): 33–44. http://dx.doi.org/10.1016/j.tca.2015.01.017.

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15

Zhang, M., Y. J. Wang, and L. H. Dai. "Understanding the serrated flow and Johari-Goldstein relaxation of metallic glasses." Journal of Non-Crystalline Solids 444 (July 2016): 23–30. http://dx.doi.org/10.1016/j.jnoncrysol.2016.04.036.

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16

Hu, Lina, and Yuanzheng Yue. "Secondary Relaxation in Metallic Glass Formers: Its Correlation with the Genuine Johari−Goldstein Relaxation." Journal of Physical Chemistry C 113, no. 33 (July 24, 2009): 15001–6. http://dx.doi.org/10.1021/jp903777f.

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17

Schroeder, Maria J., Kia L. Ngai, and C. Michael Roland. "The nearly constant loss, Johari-Goldstein β-relaxation, and α-relaxation of 1,4-polybutadiene." Journal of Polymer Science Part B: Polymer Physics 45, no. 3 (2006): 342–48. http://dx.doi.org/10.1002/polb.21051.

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18

Power, G., and J. K. Vij. "Johari–Goldstein relaxation and crystallization of sorbitol to ordered and disordered phases." Journal of Chemical Physics 120, no. 11 (March 15, 2004): 5455–62. http://dx.doi.org/10.1063/1.1648015.

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19

Prevosto, D., K. Kessairi, S. Capaccioli, M. Lucchesi, and P. A. Rolla. "Excess wing and Johari–Goldstein relaxation in binary mixtures of glass formers." Philosophical Magazine 87, no. 3-5 (January 21, 2007): 643–50. http://dx.doi.org/10.1080/14786430600986111.

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20

Wang, Z., K. L. Ngai, W. H. Wang, and S. Capaccioli. "Coupling of caged molecule dynamics to Johari-Goldstein β-relaxation in metallic glasses." Journal of Applied Physics 119, no. 2 (January 14, 2016): 024902. http://dx.doi.org/10.1063/1.4939676.

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21

Zhang, M., Y. Chen, R. G. He, S. F. Guo, J. Ma, and L. H. Dai. "Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses." Materials Research Letters 7, no. 9 (May 22, 2019): 383–91. http://dx.doi.org/10.1080/21663831.2019.1620360.

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22

Valenti, Sofia, Luis Javier del Valle, Michela Romanini, Meritxell Mitjana, Jordi Puiggalí, Josep Lluís Tamarit, and Roberto Macovez. "Drug-Biopolymer Dispersions: Morphology- and Temperature- Dependent (Anti)Plasticizer Effect of the Drug and Component-Specific Johari–Goldstein Relaxations." International Journal of Molecular Sciences 23, no. 5 (February 23, 2022): 2456. http://dx.doi.org/10.3390/ijms23052456.

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Amorphous molecule-macromolecule mixtures are ubiquitous in polymer technology and are one of the most studied routes for the development of amorphous drug formulations. For these applications it is crucial to understand how the preparation method affects the properties of the mixtures. Here, we employ differential scanning calorimetry and broadband dielectric spectroscopy to investigate dispersions of a small-molecule drug (the Nordazepam anxiolytic) in biodegradable polylactide, both in the form of solvent-cast films and electrospun microfibres. We show that the dispersion of the same small-molecule compound can have opposite (plasticizing or antiplasticizing) effects on the segmental mobility of a biopolymer depending on preparation method, temperature, and polymer enantiomerism. We compare two different chiral forms of the polymer, namely, the enantiomeric pure, semicrystalline L-polymer (PLLA), and a random, fully amorphous copolymer containing both L and D monomers (PDLLA), both of which have lower glass transition temperature (Tg) than the drug. While the drug has a weak antiplasticizing effect on the films, consistent with its higher Tg, we find that it actually acts as a plasticizer for the PLLA microfibres, reducing their Tg by as much as 14 K at 30%-weight drug loading, namely, to a value that is lower than the Tg of fully amorphous films. The structural relaxation time of the samples similarly depends on chemical composition and morphology. Most mixtures displayed a single structural relaxation, as expected for homogeneous samples. In the PLLA microfibres, the presence of crystalline domains increases the structural relaxation time of the amorphous fraction, while the presence of the drug lowers the structural relaxation time of the (partially stretched) chains in the microfibres, increasing chain mobility well above that of the fully amorphous polymer matrix. Even fully amorphous homogeneous mixtures exhibit two distinct Johari–Goldstein relaxation processes, one for each chemical component. Our findings have important implications for the interpretation of the Johari–Goldstein process as well as for the physical stability and mechanical properties of microfibres with small-molecule additives.

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23

Ngai, K. L., Marian Paluch, and Cristian Rodríguez-Tinoco. "Why is the change of the Johari–Goldstein β-relaxation time by densification in ultrastable glass minor?" Physical Chemistry Chemical Physics 20, no. 43 (2018): 27342–49. http://dx.doi.org/10.1039/c8cp05107k.

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24

Ngai, K. L., S. Capaccioli, M. Paluch, and Limin Wang. "Clarifying the nature of the Johari-Goldstein β-relaxation and emphasising its fundamental importance." Philosophical Magazine 100, no. 20 (June 20, 2020): 2596–613. http://dx.doi.org/10.1080/14786435.2020.1781276.

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25

Qiao, Jichao, Riccardo Casalini, and Jean-Marc Pelletier. "Effect of physical aging on Johari-Goldstein relaxation in La-based bulk metallic glass." Journal of Chemical Physics 141, no. 10 (September 14, 2014): 104510. http://dx.doi.org/10.1063/1.4895396.

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26

Yardimci, Hasan, and Robert L. Leheny. "Aging of the Johari-Goldstein relaxation in the glass-forming liquids sorbitol and xylitol." Journal of Chemical Physics 124, no. 21 (June 7, 2006): 214503. http://dx.doi.org/10.1063/1.2197494.

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27

Mandanici, A., and M. Cutroni. "A trace of the Johari–Goldstein relaxation in the mechanical response of supercooled ethylcyclohexane?" Materials Science and Engineering: A 521-522 (September 2009): 279–82. http://dx.doi.org/10.1016/j.msea.2008.09.152.

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28

Ngai, K. L. "Johari–Goldstein relaxation as the origin of the excess wing observed in metallic glasses." Journal of Non-Crystalline Solids 352, no. 5 (May 2006): 404–8. http://dx.doi.org/10.1016/j.jnoncrysol.2006.01.012.

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29

Prevosto, D., S. Capaccioli, M. Lucchesi, P. A. Rolla, and K. L. Ngai. "Does the entropy and volume dependence of the structural α-relaxation originate from the Johari–Goldstein β-relaxation?" Journal of Non-Crystalline Solids 355, no. 10-12 (May 2009): 705–11. http://dx.doi.org/10.1016/j.jnoncrysol.2008.09.043.

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30

Schulz, Michael. "Relaxation behavior of a supercooled liquid near the bifurcation of α and Johari-Goldstein processes." Physics Letters A 251, no. 4 (January 1999): 269–72. http://dx.doi.org/10.1016/s0375-9601(99)80002-4.

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31

Bhardwaj, Sunny P., and Raj Suryanarayanan. "Subtraction of DC Conductivity and Annealing: Approaches To Identify Johari–Goldstein Relaxation in Amorphous Trehalose." Molecular Pharmaceutics 8, no. 4 (June 30, 2011): 1416–22. http://dx.doi.org/10.1021/mp2000154.

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32

Casalini, R., A. W. Snow, and C. M. Roland. "Temperature Dependence of the Johari–Goldstein Relaxation in Poly(methyl methacrylate) and Poly(thiomethyl methacrylate)." Macromolecules 46, no. 1 (December 18, 2012): 330–34. http://dx.doi.org/10.1021/ma3021322.

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33

Bedrov, Dmitry, and Grant D. Smith. "Secondary Johari–Goldstein relaxation in linear polymer melts represented by a simple bead-necklace model." Journal of Non-Crystalline Solids 357, no. 2 (January 2011): 258–63. http://dx.doi.org/10.1016/j.jnoncrysol.2010.06.043.

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34

Tripodo, Antonio, Francesco Puosi, Marco Malvaldi, and Dino Leporini. "Mutual Information in Molecular and Macromolecular Systems." International Journal of Molecular Sciences 22, no. 17 (September 3, 2021): 9577. http://dx.doi.org/10.3390/ijms22179577.

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The relaxation properties of viscous liquids close to their glass transition (GT) have been widely characterised by the statistical tool of time correlation functions. However, the strong influence of ubiquitous non-linearities calls for new, alternative tools of analysis. In this respect, information theory-based observables and, more specifically, mutual information (MI) are gaining increasing interest. Here, we report on novel, deeper insight provided by MI-based analysis of molecular dynamics simulations of molecular and macromolecular glass-formers on two distinct aspects of transport and relaxation close to GT, namely dynamical heterogeneity (DH) and secondary Johari–Goldstein (JG) relaxation processes. In a model molecular liquid with significant DH, MI reveals two populations of particles organised in clusters having either filamentous or compact globular structures that exhibit different mobility and relaxation properties. In a model polymer melt, MI provides clearer evidence of JG secondary relaxation and sharper insight into its DH. It is found that both DH and MI between the orientation and the displacement of the bonds reach (local) maxima at the time scales of the primary and JG secondary relaxation. This suggests that, in (macro)molecular systems, the mechanistic explanation of both DH and relaxation must involve rotation/translation coupling.

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35

Capaccioli, S., D. Prevosto, M. Lucchesi, P. A. Rolla, R. Casalini, and K. L. Ngai. "Identifying the genuine Johari–Goldstein β-relaxation by cooling, compressing, and aging small molecular glass-formers." Journal of Non-Crystalline Solids 351, no. 33-36 (September 2005): 2643–51. http://dx.doi.org/10.1016/j.jnoncrysol.2005.03.071.

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36

Wu, Xuebang, Lijun Guo, and C. S. Liu. "Dynamics of Johari-Goldstein β relaxation and its universal relation to α relaxation in bulk metallic glasses by mechanical spectroscopy." Journal of Applied Physics 115, no. 22 (June 14, 2014): 223506. http://dx.doi.org/10.1063/1.4882183.

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37

Kaminska, Ewa, Kamil Kaminski, Marian Paluch, Jerzy Ziolo, and K. L. Ngai. "Additive property of secondary relaxation processes in di-n-octyl and di-isooctyl phthalates: Signature of non-Johari-Goldstein relaxation." Journal of Chemical Physics 126, no. 17 (May 7, 2007): 174501. http://dx.doi.org/10.1063/1.2728903.

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38

Ngai, K. L., J. Habasaki, D. Prevosto, S. Capaccioli, and Marian Paluch. "Thermodynamic scaling of α-relaxation time and viscosity stems from the Johari-Goldstein β-relaxation or the primitive relaxation of the coupling model." Journal of Chemical Physics 137, no. 3 (July 21, 2012): 034511. http://dx.doi.org/10.1063/1.4736547.

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39

Ngai, K. L., Li-Min Wang, and Hai-Bin Yu. "Relating Ultrastable Glass Formation to Enhanced Surface Diffusion via the Johari–Goldstein β-Relaxation in Molecular Glasses." Journal of Physical Chemistry Letters 8, no. 12 (June 7, 2017): 2739–44. http://dx.doi.org/10.1021/acs.jpclett.7b01192.

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40

Tuncer, Enis. "Change in dielectric relaxation with the presence of water in highly filled composites." Journal of Advanced Dielectrics 07, no. 05 (October 2017): 1750033. http://dx.doi.org/10.1142/s2010135x17500333.

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It is important to determine the dielectric characteristics of semiconductor encapsulation materials based on epoxy resins. We employed the dielectric spectroscopy technique to investigate the dielectric relaxation in the presence of water and how it changes the relaxation. It was observed that the dielectric relaxation of the material was significantly influenced by absorbed water, the local segmental motion (also known as Johari–Goldstein ([Formula: see text]) relaxation) was influenced most by the presence of the water, it was modified by the wet sample compared to dry one, and required high activation energy. The relaxation related to the glass transition was contributed by the cooperative motion (the [Formula: see text]-relaxation) of the epoxy resin system. The [Formula: see text]-relaxation was shifted to a low temperature in the wet sample compared to dry one. The relaxation was modeled with a clear Vogel–Fulcher–Tammann–Hesse (VFTH) behavior; the Vogel temperature of the wet sample was 8[Formula: see text]K lower than the dry sample. The presence of water acts as a plasticizer for the molecular relaxation, and speed-up the cooperative process. The measured data were also used to estimate the electrical properties of the resin system by employing an effective-medium model together with a porous media continuum model by taking into account the physical properties of the system. It is already known that the influence of water in semiconductor packaging is important in sensitive applications. The presented measurements and the analysis method would be appreciated within the semiconductor packaging community to improve material selection and performance evaluation efforts.

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41

PIGORSCH, C., M. SCHULZ, and S. TRIMPER. "AN ANALYTICAL APPROACH TO THE FREDRICKSON–ANDERSEN MODEL WITH VACANCIES." International Journal of Modern Physics B 13, no. 11 (May 10, 1999): 1379–96. http://dx.doi.org/10.1142/s0217979299001454.

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The dynamics of the n-spin facilitated kinetic Ising model (Fredrickson–Andersen model) with mobile vacancies as a model for the glassy materials are studied analytically by means of the Fock-space representation of the master equation. The system is mapped onto a three state model characterizing mobile, immobile and vacant cells. The characteristic cooperativity for glass forming systems are introduced by restrictions influencing the local dynamics and subsequently the local mobility of different lattice cells. In a moderate temperature regime the relaxation time versus the inverse temperature T-1 reveals two processes. Whereas the slow process can be identified with the conventional α-process of the supercooled liquid, the fast one originated by the additional empty sites is suggested to be the β JG -process due to Johari–Goldstein. The results are accordant with numerical simulations and suggest that the modified n-spin facilitated kinetic Ising model is able to describe qualitatively the behaviour of a supercooled liquid near the glass transition temperature T g .

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42

Ngai, K. L., and Li-Min Wang. "Relations between the Structural α-Relaxation and the Johari–Goldstein β-Relaxation in Two Monohydroxyl Alcohols: 1-Propanol and 5-Methyl-2-hexanol." Journal of Physical Chemistry B 123, no. 3 (January 2, 2019): 714–19. http://dx.doi.org/10.1021/acs.jpcb.8b11453.

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43

Kessairi, Khadra, Simone Capaccioli, Daniele Prevosto, Soheil Sharifi, and Pierangelo Rolla. "Effect of temperature and pressure on the structural (α-) and the true Johari–Goldstein (β-) relaxation in binary mixtures." Journal of Non-Crystalline Solids 353, no. 47-51 (December 2007): 4273–77. http://dx.doi.org/10.1016/j.jnoncrysol.2007.01.095.

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44

Ngai, K. L., P. Lunkenheimer, C. León, U. Schneider, R. Brand, and A. Loidl. "Nature and properties of the Johari–Goldstein β-relaxation in the equilibrium liquid state of a class of glass-formers." Journal of Chemical Physics 115, no. 3 (July 15, 2001): 1405–13. http://dx.doi.org/10.1063/1.1381054.

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45

Kołodziej, Sławomir, Sebastian Pawlus, K. L. Ngai, and Marian Paluch. "Verifying the Approximate Coinvariance of the α and Johari–Goldstein β Relaxation Times to Variations of Pressure and Temperature in Polyisoprene." Macromolecules 51, no. 12 (June 4, 2018): 4435–43. http://dx.doi.org/10.1021/acs.macromol.8b00811.

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46

Ngai, K. L., J. Habasaki, D. Prevosto, S. Capaccioli, and Marian Paluch. "Erratum: “Thermodynamic scaling of α-relaxation time and viscosity stems from the Johari-Goldstein β-relaxation or the primitive relaxation of the coupling model” [J. Chem. Phys. 137, 034511 (2012)]." Journal of Chemical Physics 140, no. 1 (January 7, 2014): 019901. http://dx.doi.org/10.1063/1.4860575.

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47

Valenti, Sofia, Claudio Cazorla, Michela Romanini, Josep Tamarit, and Roberto Macovez. "Eutectic Mixture Formation and Relaxation Dynamics of Coamorphous Mixtures of Two Benzodiazepine Drugs." Pharmaceutics 15, no. 1 (January 5, 2023): 196. http://dx.doi.org/10.3390/pharmaceutics15010196.

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The formation of coamorphous mixtures of pharmaceuticals is an interesting strategy to improve the solubility and bioavailability of drugs, while at the same time enhancing the kinetic stability of the resulting binary glass and allowing the simultaneous administration of two active principles. In this contribution, we describe kinetically stable amorphous binary mixtures of two commercial active pharmaceutical ingredients, diazepam and nordazepam, of which the latter, besides being administered as a drug on its own, is also the main active metabolite of the other in the human body. We report the eutectic equilibrium-phase diagram of the binary mixture, which is found to be characterized by an experimental eutectic composition of 0.18 molar fraction of nordazepam, with a eutectic melting point of Te = 395.4 ± 1.2 K. The two compounds are barely miscible in the crystalline phase. The mechanically obtained mixtures were melted and supercooled to study the glass-transition and molecular-relaxation dynamics of amorphous mixtures at the corresponding concentration. The glass-transition temperature was always higher than room temperature and varied linearly with composition. The Te was lower than the onset of thermal decomposition of either compound (pure nordazepam decomposes upon melting and pure diazepam well above its melting point), thus implying that the eutectic liquid and glass can be obtained without any degradation of the drugs. The eutectic glass was kinetically stable against crystallization for at least a few months. The relaxation processes of the amorphous mixtures were studied by dielectric spectroscopy, which provided evidence for a single structural (α) relaxation, a single Johari–Goldstein (β) relaxation, and a ring-inversion conformational relaxation of the diazepinic ring, occurring on the same timescale in both drugs. We further characterized both the binary mixtures and pure compounds by FTIR spectroscopy and first-principles density functional theory (DFT) simulations to analyze intermolecular interactions. The DFT calculations confirm the presence of strong attractive forces within the heteromolecular dimer, leading to large dimer interaction energies of the order of −0.1 eV.

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48

Hensel-Bielówka, S., M. Paluch, and K. L. Ngai. "Emergence of the genuine Johari–Goldstein secondary relaxation in m-fluoroaniline after suppression of hydrogen-bond-induced clusters by elevating temperature and pressure." Journal of Chemical Physics 123, no. 1 (July 2005): 014502. http://dx.doi.org/10.1063/1.1946752.

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49

Yu, Hai-Bin, Ranko Richert, and Konrad Samwer. "Structural rearrangements governing Johari-Goldstein relaxations in metallic glasses." Science Advances 3, no. 11 (November 2017): e1701577. http://dx.doi.org/10.1126/sciadv.1701577.

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50

Capaccioli, S., K. Kessairi, D. Prevosto, M. Lucchesi, and K. L. Ngai. "Genuine Johari–Goldstein β-relaxations in glass-forming binary mixtures." Journal of Non-Crystalline Solids 352, no. 42-49 (November 2006): 4643–48. http://dx.doi.org/10.1016/j.jnoncrysol.2006.01.145.

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