Connecting glass-forming ability of binary mixtures of soft particles to equilibrium melting temperatures

Nie, Yunhuan; Líu, Jùn; Guo, Jialing; Xu, Nanping

doi:10.1038/s41467-020-16986-z

Cited by 14 publications

(22 citation statements)

References 55 publications

(84 reference statements)

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“…Together with the fact that Ψ is an increasing function of r, we are able to predict and understand well the special relaxation dynamics of confined supercooled liquids, including the decrease of the structural relaxation time away from the wall and the anisotropy of the relaxation time in the directions parallel and perpendicular to the wall. Our study thus provides another evidence suggesting that behaviors of supercooled liquids can be viewed from the perspective of amorphous solids at T = 0 [21,36,47].…”

Section: Discussionmentioning

confidence: 72%

Jamming in confined geometry: Criticality of the jamming transition and implications of structural relaxation in confined supercooled liquids

Liu,

Tong,

Nie

et al. 2021

Preprint

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In marginally jammed solids confined by walls, we calculate the particle and ensemble averaged value of an order parameter, Ψ(r) , as a function of the distance to the wall, r. Being a microscopic indicator of structural disorder and particle mobility in solids, Ψ is by definition the response of the mean square particle displacement to the increase of temperature in the harmonic approximation and can be directly calculated from the normal modes of vibration of the zero-temperature solids. We find that, in confined jammed solids, Ψ(r) curves at different pressures can collapse onto the same master curve following a scaling function, indicating the criticality of the jamming transition. The scaling collapse suggests a diverging length scale and marginal instability at the jamming transition, which should be accessible to sophisticatedly designed experiments. Moreover, Ψ(r) is found to be significantly suppressed when approaching the wall and anisotropic in directions perpendicular and parallel to the wall. This finding can be applied to understand the r-dependence and anisotropy of the structural relaxation in confined supercooled liquids, providing another example of understanding or predicting behaviors of supercooled liquids from the perspective of the zero-temperature amorphous solids.

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Section: Discussionmentioning

confidence: 72%

Jamming in confined geometry: Criticality of the jamming transition and implications of structural relaxation in confined supercooled liquids

Liu,

Tong,

Nie

et al. 2021

Preprint

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“…Whether a bridge can be built up to link order and disorder, and equilibrium and non‐equilibrium is to be tackled. [ 45‐46 ]…”

Section: Discussionmentioning

confidence: 99%

Emergent Physics on the Route from Crystals to Amorphous Solids

Jiang

2022

Chin. J. Chem.

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Comprehensive Summary By introducing and gradually increasing the magnitude of disorder into both crystalline particle packings and crystalline networks, we realize the evolution from crystals to amorphous solids. The evolution of structures and mechanical properties during this process is expected to help us understand the physical origin of the peculiar properties of amorphous solids, e.g., the boson peak, so as to build up the bridge between well‐established physics of crystals and that of amorphous solids. To our surprise, this attempt also reveals some extraordinary phenomena, including the hidden order‐disorder transition from crystals to disordered crystals and the emergence of mechanical metamaterials with negative Poisson's ratios. What is the most favorite and original chemistry developed in your research group? Our favorite research findings are some extraordinary phase behaviors of soft‐core particle systems, including the discontinuous‐continuous transition of two‐dimensional melting, formation of quasicrystals and the transition from crystals to disordered crystals discussed in this article. How do you get into this specific field? Could you please share some experiences with our readers? I entered the field of soft matter during my graduate study at Yale University. I have been attracted by so many interesting and complex problems in soft matter. During the research, we keep meeting new phenomena and problems, which keep broadening my interest. Learning by doing is a good way to enjoy research. How do you supervise your students? I always assign one or two problems to beginners. The problems may not be very specific. My purpose is to encourage the students to work independently and cultivate their abilities of literature reading and finding and solving problems. I listen to their reports in weekly group meetings and discuss about their work whenever they come to show their progress or I have some new ideas. Once they achieve some significant progress, I will put more effort to help finalize their work. What is the most important personality for scientific research? Persistence. What are your hobbies? Jogging, walking, music, and movies. What is your favorite journal(s)? Physical Review series.

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“…This statistical approach of inherent structures is crucial in several aspects. First, it shows that inherent structures have the predictive power of characteristic temperatures of equilibrium systems, providing another evidence of the underlying connections between equilibrium and nonequilibrium systems ( 41 ). Second, it suggests a fast and easy way to indirectly calculate the crystallization and onset temperatures.…”

Section: Discussionmentioning

confidence: 99%

“…We may then view T c as T on for the glass-formation of monodisperse systems on the basis of the consistency between T c and T on . On the other hand, widely used glass-formers, especially bidisperse systems, may slowly evolve to microphase or phase separation with sufficiently slow quench rate ( 41 , 53 ). If phase separation occurs, T on could be regarded as the onset temperature of the separation (ordering) as well.…”

Section: Discussionmentioning

confidence: 99%

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Unifying fluctuation-dissipation temperatures of slow-evolving nonequilibrium systems from the perspective of inherent structures

et al. 2021

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For nonequilibrium systems, how to define temperature is one of the key and difficult issues to solve. Although effective temperatures have been proposed and studied to this end, it still remains elusive what they actually are. Here, we focus on the fluctuation-dissipation temperatures and report that such effective temperatures of slow-evolving systems represent characteristic temperatures of their equilibrium counterparts. By calculating the fluctuation-dissipation relation of inherent structures, we obtain a temperature-like quantity TIS. For monocomponent crystal-formers, TIS agrees well with the crystallization temperature Tc, while it matches with the onset temperature Ton for glass-formers. It also agrees with effective temperatures of typical nonequilibrium systems, such as aging glasses, quasi-static shear flows, and quasi-static self-propelled flows. From the unique perspective of inherent structures, our study reveals the nature of effective temperatures and the underlying connections between nonequilibrium and equilibrium systems and confirms the equivalence between Ton and Tc.

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Connecting glass-forming ability of binary mixtures of soft particles to equilibrium melting temperatures

Cited by 14 publications

References 55 publications

Jamming in confined geometry: Criticality of the jamming transition and implications of structural relaxation in confined supercooled liquids

Jamming in confined geometry: Criticality of the jamming transition and implications of structural relaxation in confined supercooled liquids

Emergent Physics on the Route from Crystals to Amorphous Solids

Unifying fluctuation-dissipation temperatures of slow-evolving nonequilibrium systems from the perspective of inherent structures

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