1
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Gironella-Torrent M, Bergamaschi G, Sorkin R, Wuite GJL, Ritort F. Viscoelastic phenotyping of red blood cells. Biophys J 2024; 123:770-781. [PMID: 38268191 PMCID: PMC10995428 DOI: 10.1016/j.bpj.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/21/2023] [Accepted: 01/18/2024] [Indexed: 01/26/2024] Open
Abstract
Red blood cells (RBCs) are the simplest cell types with complex dynamical and viscoelastic phenomenology. While the mechanical rigidity and the flickering noise of RBCs have been extensively investigated, an accurate determination of the constitutive equations of the relaxational kinetics is lacking. Here we measure the force relaxation of RBCs under different types of tensional and compressive extension-jump protocols by attaching an optically trapped bead to the RBC membrane. Relaxational kinetics follows linear response from 60 pN (tensional) to -20 pN (compressive) applied forces, exhibiting a triple exponential function with three well-separated timescales over four decades (0.01-100 s). While the fast timescale (τF∼0.02(1)s) corresponds to the relaxation of the membrane, the intermediate and slow timescales (τI=4(1)s; τS=70(8)s) likely arise from the cortex dynamics and the cytosol viscosity. Relaxation is highly heterogeneous across the RBC population, yet the three relaxation times are correlated, showing dynamical scaling. Finally, we find that glucose depletion and laser illumination of RBCs lead to faster triple exponential kinetics and RBC rigidification. Viscoelastic phenotyping is a promising dynamical biomarker applicable to other cell types and active systems.
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Affiliation(s)
- Marta Gironella-Torrent
- Small Biosystems Lab, Condensed Matter Physics Department, University of Barcelona, Barcelona, Spain; Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Giulia Bergamaschi
- Department of Physics and Astronomy and LaserLab, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Raya Sorkin
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv, Israel
| | - Gijs J L Wuite
- Department of Physics and Astronomy and LaserLab, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Felix Ritort
- Small Biosystems Lab, Condensed Matter Physics Department, University of Barcelona, Barcelona, Spain; Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Barcelona, Spain
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2
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Zheng L, Liu S, Ji F, Tong L, Xu S. Structural Causes of Brittleness Changes in Aluminosilicate Glasses with Different Cooling Rates. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1595. [PMID: 38612109 PMCID: PMC11012692 DOI: 10.3390/ma17071595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/18/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024]
Abstract
Numerous sources have already demonstrated that varying annealing rates can result in distinct toughness and brittleness in glass. To determine the underlying mechanisms driving this phenomenon, molecular dynamic (MD) simulations were employed to investigate the microstructure of aluminosilicate glasses under different cooling rates, and then uniaxial stretching was performed on them under controlled conditions. Results indicated that compared with short-range structure, cooling rate has a greater influence on the medium-range structure in glass, and it remarkably affects the volume of voids. Both factors play a crucial role in determining the brittleness of the glass. The former adjusts network connectivity to influence force transmission by manipulating the levels of bridging oxygen (BO) and non-bridging oxygen (NBO), and the latter accomplishes the objective of influencing brittleness by modifying the environmental conditions that affect the changes in BO and NBO content. The variation in the void environment results in differences in the strategies of the changes in BO and NBO content during glass stress. These findings stem from the excellent response of BO and NBO to the characteristic points of stress-strain curves during stretching. This paper holds importance in understanding the reasons behind the effect of cooling rates on glass brittleness and in enhancing our understanding of the ductile/brittle transition (DTB) in glass.
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Affiliation(s)
- Liqiang Zheng
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; (L.Z.); (L.T.)
| | - Shimin Liu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; (L.Z.); (L.T.)
| | - Fushun Ji
- Hebei Building Materials Vocational and Technical College, Qinhuangdao 066004, China;
| | - Lianjie Tong
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; (L.Z.); (L.T.)
| | - Shiqing Xu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; (L.Z.); (L.T.)
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3
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Distinct relaxation mechanism at room temperature in metallic glass. Nat Commun 2023; 14:540. [PMID: 36725882 PMCID: PMC9892575 DOI: 10.1038/s41467-023-36300-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
How glasses relax at room temperature is still a great challenge for both experimental and simulation studies due to the extremely long relaxation time-scale. Here, by employing a modified molecular dynamics simulation technique, we extend the quantitative measurement of relaxation process of metallic glasses to room temperature. Both energy relaxation and dynamics, at low temperatures, follow a stretched exponential decay with a characteristic stretching exponent β = 3/7, which is distinct from that of supercooled liquid. Such aging dynamics originates from the release of energy, an intrinsic nature of out-of-equilibrium system, and manifests itself as the elimination of defects through localized atomic strains. This finding is also supported by long-time stress-relaxation experiments of various metallic glasses, confirming its validity and universality. Here, we show that the distinct relaxation mechanism can be regarded as a direct indicator of glass transition from a dynamic perspective.
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4
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Atila A, Ouaskit S, Hasnaoui A. Ionic self-diffusion and the glass transition anomaly in aluminosilicates. Phys Chem Chem Phys 2020; 22:17205-17212. [PMID: 32677636 DOI: 10.1039/d0cp02910f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The glass transition temperature (Tg) is the temperature after which a supercooled liquid undergoes a dynamical arrest. Usually, glass network modifiers (e.g., Na2O) affect the behavior of Tg. However, in aluminosilicate glasses, the effect of different modifiers on Tg is still unclear and shows an anomalous behavior. Here, based on molecular dynamics simulations, we show that Tg decreases with increasing charge balancing cation field strength (FS) in the aluminosilicate glasses, which is an anomalous behavior as compared to other oxide glasses. The results show that the origins of this anomaly come from the dynamics of the supercooled liquid above Tg, which in turn is correlated to pair excess entropy. Our results deepen our understanding of the effect of different modifiers on the properties of the aluminosilicate glasses.
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Affiliation(s)
- Achraf Atila
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Materials Science and Engineering, Institute I, Martensstr. 5, Erlangen 91058, Germany.
| | - Said Ouaskit
- Laboratoire de Physique de la Matière Condensée, Faculté des Sciences Ben M'sik, University Hassan II of Casablanca, B.P 7955, Av Driss El Harti, Sidi Othmane, Casablanca, Morocco
| | - Abdellatif Hasnaoui
- LS3M, Faculté Polydisciplinaire Khouribga, Sultan Moulay Slimane University of Beni Mellal, B.P 145, 25000 Khouribga, Morocco
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5
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Bauchy M, Mauro JC, Smedskjaer MM. Bauchy et al. Reply. PHYSICAL REVIEW LETTERS 2020; 124:199602. [PMID: 32469581 DOI: 10.1103/physrevlett.124.199602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - John C Mauro
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
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6
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Unger R, Arash B, Exner W, Rolfes R. Effect of temperature on the viscoelastic damage behaviour of nanoparticle/epoxy nanocomposites: Constitutive modelling and experimental validation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122265] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Urata S. An efficient computational procedure to obtain a more stable glass structure. J Chem Phys 2019; 151:224502. [DOI: 10.1063/1.5133413] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Shingo Urata
- Innovative Technology Laboratories, AGC Inc., 1150 Hazawa-cho Kanagawa-ku, Yokohama 221-8755, Kanagawa, Japan
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8
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Frankberg EJ, Kalikka J, García Ferré F, Joly-Pottuz L, Salminen T, Hintikka J, Hokka M, Koneti S, Douillard T, Le Saint B, Kreiml P, Cordill MJ, Epicier T, Stauffer D, Vanazzi M, Roiban L, Akola J, Di Fonzo F, Levänen E, Masenelli-Varlot K. Highly ductile amorphous oxide at room temperature and high strain rate. Science 2019; 366:864-869. [DOI: 10.1126/science.aav1254] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 07/03/2019] [Accepted: 10/08/2019] [Indexed: 11/02/2022]
Affiliation(s)
- Erkka J. Frankberg
- Unit of Materials Science and Environmental Engineering, Tampere University, Tampere, Finland
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milano, Italy
| | - Janne Kalikka
- Computational Physics Laboratory, Tampere University, Tampere, Finland
| | - Francisco García Ferré
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milano, Italy
| | - Lucile Joly-Pottuz
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | - Turkka Salminen
- Tampere Microscopy Center, Tampere University, Tampere, Finland
| | - Jouko Hintikka
- Unit of Materials Science and Environmental Engineering, Tampere University, Tampere, Finland
| | - Mikko Hokka
- Unit of Materials Science and Environmental Engineering, Tampere University, Tampere, Finland
| | - Siddardha Koneti
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | - Thierry Douillard
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | - Bérangère Le Saint
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | - Patrice Kreiml
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria
| | - Megan J. Cordill
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria
| | - Thierry Epicier
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | | | - Matteo Vanazzi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milano, Italy
| | - Lucian Roiban
- Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France
| | - Jaakko Akola
- Computational Physics Laboratory, Tampere University, Tampere, Finland
- Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
| | - Fabio Di Fonzo
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milano, Italy
| | - Erkki Levänen
- Unit of Materials Science and Environmental Engineering, Tampere University, Tampere, Finland
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9
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Wilkinson CJ, Potter AR, Welch RS, Bragatto C, Zheng Q, Bauchy M, Affatigato M, Feller SA, Mauro JC. Topological Origins of the Mixed Alkali Effect in Glass. J Phys Chem B 2019; 123:7482-7489. [PMID: 31369267 DOI: 10.1021/acs.jpcb.9b06512] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mixed alkali effect, the deviation from expected linear property changes when alkali ions are mixed in a glass, remains a point of contention in the glass community. While several earlier models have been proposed to explain mixed alkali effects on ionic motion, models based on or containing discussion of structural aspects of mixed-alkali glasses remain rare by comparison. However, the transition-range viscosity depression effect is many orders in magnitude for mixed-alkali glasses, and the original observation of the effect (then known as the Thermometer Effect) concerned the highly anomalous temperature dependence of stress and structural relaxation time constants. With this in mind, a new structural model based on topological constraint theory is proposed herein which elucidates the origin of the mixed alkali effect as a consequence of network strain due to differing cation radii. Discussion of literature models and data alongside new molecular dynamics simulations and experimental data are presented in support of the model, with good agreement.
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Affiliation(s)
- Collin J Wilkinson
- Department of Materials Science and Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Arron R Potter
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Rebecca S Welch
- Department of Physics , Coe College , Cedar Rapids , Iowa 52402 , United States
| | - Caio Bragatto
- Department of Physics , Coe College , Cedar Rapids , Iowa 52402 , United States
| | - Qiuju Zheng
- School of Materials Science and Engineering , Qilu University of Technology , Jinan , 250353 , China
| | - Mathieu Bauchy
- Department of Civil and Environmental Engineering , University of California , Los Angeles , California 90095 , United States
| | - Mario Affatigato
- Department of Physics , Coe College , Cedar Rapids , Iowa 52402 , United States
| | - Steven A Feller
- Department of Physics , Coe College , Cedar Rapids , Iowa 52402 , United States
| | - John C Mauro
- Department of Materials Science and Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
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10
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Zhou ZY, Peng HL, Yu HB. Structural origin for vibration-induced accelerated aging and rejuvenation in metallic glasses. J Chem Phys 2019; 150:204507. [PMID: 31153173 DOI: 10.1063/1.5094825] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Glassy materials are nonequilibrium and their energy states have crucial influences on properties. Recent studies have shown that oscillating deformations (vibrations) can cause either accelerated aging (lowering energy) or rejuvenation (elevating energy); however, the underlying atomic mechanisms remain elusive. Using metallic glasses (MGs) as model systems, we show that the vibration-induced accelerated aging is correlated with the strain field of the stringlike atomic motions stemming from the Johari-Goldstein (β) relaxation, whereas the rejuvenation is associated with nonlinear response and the formation of nanoscale shear bands attributing to the activation of α relaxation. Both processes are affected by thermal fluctuations, which result in an optimal temperature for accelerated aging. These results suggest intrinsic correlations among relaxation dynamics, mechanical properties, and the vibration induced structural rearrangements in MGs.
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Affiliation(s)
- Zhen-Ya Zhou
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hai-Long Peng
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Hai-Bin Yu
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
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11
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Long-term creep deformations in colloidal calcium-silicate-hydrate gels by accelerated aging simulations. J Colloid Interface Sci 2019; 542:339-346. [PMID: 30769256 DOI: 10.1016/j.jcis.2019.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/24/2018] [Accepted: 02/06/2019] [Indexed: 11/21/2022]
Abstract
When subjected to a sustained load, jammed colloidal gels can feature some delayed viscoplastic creep deformations. However, due to the long timescale of creep (up to several years), its modeling and, thereby, prediction has remained challenging. Here, based on mesoscale simulations of calcium-silicate-hydrate gels (CSH, the binding phase of concrete), we present an accelerated simulation method-based on stress perturbations and overaging-to model creep deformations in CSH. Our simulations yield a very good agreement with nanoindentation creep tests, which suggests that concrete creep occurs through the reorganization of CSH grains at the mesoscale. We show that the creep of CSH exhibits a logarithmic dependence on time-in agreement with the free-volume theory of granular physics. Further, we demonstrate the existence of a linear regime, i.e., wherein creep linearly depends on the applied load-which establishes the creep modulus as a material constant. These results could offer a new physics-based basis for nanoengineering colloidal gels featuring minimal creep.
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12
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Stretched exponential relaxation process of onion structures under various oscillatory shears with analysis using Shannon entropy. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.08.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Abstract
The time-dependent response of structural materials dominates our aging infrastructure's life expectancy and has important resilience implications. For calcium-silicate-hydrates, the glue of cement, nanoscale mechanisms underlying time-dependent phenomena are complex and remain poorly understood. This complexity originates in part from the inherent difficulty in studying nanoscale longtime phenomena in atomistic simulations. Herein, we propose a three-staged incremental stress-marching technique to overcome such limitations. The first stage unravels a stretched exponential relaxation, which is ubiquitous in glassy systems. When fully relaxed, the material behaves viscoelastically upon further loading, which is described by the standard solid model. By progressively increasing the interlayer water, the time-dependent response of calcium-silicate-hydrates exhibits a transition from viscoelastic to logarithmic creep. These findings bridge the gap between atomistic simulations and nanomechanical experimental measurements and pave the way for the design of reduced aging construction materials and other disordered systems such as metallic and oxide glasses.
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14
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Yu Y, Krishnan NMA, Smedskjaer MM, Sant G, Bauchy M. The hydrophilic-to-hydrophobic transition in glassy silica is driven by the atomic topology of its surface. J Chem Phys 2018; 148:074503. [DOI: 10.1063/1.5010934] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yingtian Yu
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - N. M. Anoop Krishnan
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Morten M. Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
- California Nanosystems Institute (CNSI), University of California, Los Angeles, California 90095, USA
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
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15
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Hsiao YH, La Plante EC, Krishnan NMA, Le Pape Y, Neithalath N, Bauchy M, Sant G. Effects of Irradiation on Albite’s Chemical Durability. J Phys Chem A 2017; 121:7835-7845. [DOI: 10.1021/acs.jpca.7b05098] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Yann Le Pape
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Narayanan Neithalath
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287, United States
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16
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Yu Y, Wang M, Smedskjaer MM, Mauro JC, Sant G, Bauchy M. Thermometer Effect: Origin of the Mixed Alkali Effect in Glass Relaxation. PHYSICAL REVIEW LETTERS 2017; 119:095501. [PMID: 28949559 DOI: 10.1103/physrevlett.119.095501] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Indexed: 06/07/2023]
Abstract
Despite the dramatic increase of viscosity as temperature decreases, some glasses are known to feature room-temperature relaxation. However, the structural origin of this phenomenon-known as the "thermometer effect"-remains unclear. Here, based on accelerated molecular dynamics simulations of alkali silicate glasses, we show that both enthalpy and volume follow stretched exponential decay functions upon relaxation. However, we observe a bifurcation of their stretching exponents, with β=3/5 and 3/7 for enthalpy and volume relaxation, respectively, in agreement with Phillips's topological diffusion-trap model. Based on these results, we demonstrate that the thermometer effect is a manifestation of the mixed alkali effect. We show that relaxation is driven by the existence of stressed local structural instabilities in mixed alkali glasses. This driving force is found to be at a maximum when the concentrations of each alkali atom equal each other, which arises from a balance between the concentration of each alkali atom and the magnitude of the local stress that they experience.
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Affiliation(s)
- Yingtian Yu
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Mengyi Wang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - John C Mauro
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
- California Nanosystems Institute (CNSI), University of California, Los Angeles, California 90095, USA
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
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17
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Li X, Song W, Yang K, Krishnan NMA, Wang B, Smedskjaer MM, Mauro JC, Sant G, Balonis M, Bauchy M. Cooling rate effects in sodium silicate glasses: Bridging the gap between molecular dynamics simulations and experiments. J Chem Phys 2017; 147:074501. [DOI: 10.1063/1.4998611] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Xin Li
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
| | - Weiying Song
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
| | - Kai Yang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
| | - N. M. Anoop Krishnan
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
| | - Bu Wang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
| | - Morten M. Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - John C. Mauro
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials, University of California, Los Angeles, California 90095-1593, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095-1593, USA
- Institute for Technology Advancement, University of California, Los Angeles, California 90095-1593, USA
| | - Magdalena Balonis
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095-1593, USA
- Institute for Technology Advancement, University of California, Los Angeles, California 90095-1593, USA
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), University of California, Los Angeles, California 90095-1593, USA
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18
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Bauchy M, Wang M, Yu Y, Wang B, Krishnan NMA, Masoero E, Ulm FJ, Pellenq R. Topological Control on the Structural Relaxation of Atomic Networks under Stress. PHYSICAL REVIEW LETTERS 2017; 119:035502. [PMID: 28777608 DOI: 10.1103/physrevlett.119.035502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 06/07/2023]
Abstract
Upon loading, atomic networks can feature delayed irreversible relaxation. However, the effect of composition and structure on relaxation remains poorly understood. Herein, relying on accelerated molecular dynamics simulations and topological constraint theory, we investigate the relationship between atomic topology and stress-induced structural relaxation, by taking the example of creep deformations in calcium silicate hydrates (C─S─H), the binding phase of concrete. Under constant shear stress, C─S─H is found to feature delayed logarithmic shear deformations. We demonstrate that the propensity for relaxation is minimum for isostatic atomic networks, which are characterized by the simultaneous absence of floppy internal modes of relaxation and eigenstress. This suggests that topological nanoengineering could lead to the discovery of nonaging materials.
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Affiliation(s)
- Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Mengyi Wang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Yingtian Yu
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Bu Wang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - N M Anoop Krishnan
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Enrico Masoero
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Franz-Joseph Ulm
- Concrete Sustainability Hub, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
- MIT-CNRS joint laboratory at Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Roland Pellenq
- Concrete Sustainability Hub, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
- MIT-CNRS joint laboratory at Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
- Centre Interdisciplinaire des Nanosciences de Marseille, CNRS and Aix-Marseille University, Campus de Luminy, Marseille, 13288 Cedex 09, France
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19
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Krishnan NMA, Wang B, Le Pape Y, Sant G, Bauchy M. Irradiation- vs. vitrification-induced disordering: The case of𝜶-quartz and glassy silica. J Chem Phys 2017; 146:204502. [DOI: 10.1063/1.4982944] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- N. M. Anoop Krishnan
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Bu Wang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Yann Le Pape
- Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6148, USA
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
- California Nanosystems Institute (CNSI), University of California, Los Angeles, California 90095, USA
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
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20
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Zou W, Larson RG. A hybrid Brownian dynamics/constitutive model for yielding, aging, and rejuvenation in deforming polymeric glasses. SOFT MATTER 2016; 12:6757-6770. [PMID: 27453365 DOI: 10.1039/c6sm00851h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a hybrid model for polymeric glasses under deformation that combines a minimal model of segmental dynamics with a beads-and-springs model of a polymer, solved by Brownian dynamics (BD) simulations, whose relaxation is coupled to the segmental dynamics through the drag coefficient of the beads. This coarse-grained model allows simulations that are much faster than molecular dynamics and successfully capture the entire range of mechanical response including yielding, plastic flow, strain-hardening, and incomplete strain recovery. The beads-and-springs model improves upon the dumbbell model for glassy polymers proposed by Fielding et al. (Phys. Rev. Lett., 2012, 108, 048301) by capturing the small elastic recoil seen experimentally without the use of ad hoc adjustments of parameters required in the model of Fielding et al. With appropriate choice of parameters, predictions of creep, recovery, and segmental relaxation are found to be in good agreement with poly(methylmethacrylate) (PMMA) data of Lee et al. (Science, 2009, 323, 231-234). Our model shows dramatic differences in behavior of the segmental relaxation time between extensional creep and steady extension, and between extension and shear. The non-monotonic response of the segmental relaxation time to extensional creep and the small elastic recovery after removal of stress are shown to arise from sub-chains that are trapped between folds, and that become highly oriented and stretched at strains of order unity, connecting the behavior of glassy polymers under creep to that of dilute polymer solutions under fast extensional flows. We are also able to predict the effects of polymer pre-orientation in the parallel or orthogonal direction on the subsequent response to extensional deformation.
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Affiliation(s)
- Weizhong Zou
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
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21
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Pignatelli I, Kumar A, Alizadeh R, Le Pape Y, Bauchy M, Sant G. A dissolution-precipitation mechanism is at the origin of concrete creep in moist environments. J Chem Phys 2016; 145:054701. [DOI: 10.1063/1.4955429] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Isabella Pignatelli
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Aditya Kumar
- Materials Science and Engineering Department, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | | | - Yann Le Pape
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, USA
- California Nanosystems Institute (CNSI), University of California, Los Angeles, California 90095, USA
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22
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Yildirim C, Raty JY, Micoulaut M. Anomalous diffusion and non-monotonic relaxation processes in Ge-Se liquids. J Chem Phys 2016; 144:224503. [PMID: 27306014 DOI: 10.1063/1.4953077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate the dynamical properties of liquid GexSe100-x as a function of Ge content by first-principles molecular dynamic simulations for a certain number of temperatures in the liquid state. The focus is set on ten compositions (where x ≤ 33%) encompassing the reported flexible to rigid and rigid to stressed-rigid transitions. We examine diffusion coefficients, diffusion activation energies, glassy relaxation behavior, and viscosity of these liquids from Van Hove correlation and intermediate scattering functions. At fixed temperature, all properties/functions exhibit an anomalous behavior with Ge content in the region 18%-22%, and provide a direct and quantitative link to the network rigidity.
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Affiliation(s)
- Can Yildirim
- Laboratoire de Physique Théorique de la Matière Condensée, Paris Sorbonne Universités, UPMC, 4, Place Jussieu, 75252 Paris Cedex 05, France
| | - Jean-Yves Raty
- Physique des Solides, Interfaces et Nanostructures et SESAME, B5 Université de Liège, B4000 Sart-Tilman, Belgium
| | - Matthieu Micoulaut
- Laboratoire de Physique Théorique de la Matière Condensée, Paris Sorbonne Universités, UPMC, 4, Place Jussieu, 75252 Paris Cedex 05, France
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