Jamming is not just cool any more

Liu, Andrea J.; Nagel, Sidney R.

doi:10.1038/23819

Cited by 1,830 publications

(1,831 citation statements)

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“…One of the main features shared by their dynamics is the presence of jamming, a new concept recently proposed to refer to the suppression of the temporal relaxation of a physical system and its corresponding ability to explore the space of configurations [89,90]. Under the action of externally applied shear stresses, these systems eventually yield and are able to flow like a viscous fluid.…”

Section: Kinetically Constrained Dynamics: Jamming and Shear Yieldingmentioning

confidence: 99%

“…Molecular dynamics simulations [104,105,106,107] of glass-forming liquids and polymers have proved of much help in this respect. About the same time, a general "jamming" scenario was also proposed [89] as a common framework to understand the mechanical behavior of a broader class of nonequilibrium physical systems (colloidal suspensions, supercooled liquids, foams, etc. and granular media) which, in spite of their differences, exhibit common properties such as slow dynamics and scaling features near the so-called jamming threshold.…”

Section: A Jamming and Viscoelastic Flow In Soft Condensed Matter Mamentioning

confidence: 99%

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Deblocking of interacting particle assemblies: from pinning to jamming

Miguel¹,

Andrade²,

Zapperi³

2003

Braz. J. Phys.

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A wide variety of interacting particle assemblies driven by an external force are characterized by a transition between a blocked and a moving phase. The origin of this deblocking transition can be traced back to the presence of either external quenched disorder, or of internal constraints. The first case belongs to the realm of the depinning transition, which, for example, is relevant for flux-lines in type II superconductors and other elastic systems moving in a random medium. The second case is usually included within the so-called jamming scenario observed, for instance, in many glassy materials as well as in plastically deforming crystals. Here we review some aspects of the rich phenomenology observed in interacting particle models. In particular, we discuss front depinning, observed when particles are injected inside a random medium from the boundary, elastic and plastic depinning in particle assemblies driven by external forces, and the rheology of systems close to the jamming transition. We emphasize similarities and differences in these phenomena.

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Section: Kinetically Constrained Dynamics: Jamming and Shear Yieldingmentioning

confidence: 99%

Section: A Jamming and Viscoelastic Flow In Soft Condensed Matter Mamentioning

confidence: 99%

Deblocking of interacting particle assemblies: from pinning to jamming

Miguel¹,

Andrade²,

Zapperi³

2003

Braz. J. Phys.

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“…Just over ten years ago it was proposed [1] to approach disordered condensedmatter systems in a more unified way than is usually done, by starting from the observation that many systems -not just molecular glasses, but also many soft-matter systems like granular media, colloids, pastes, emulsions, and foams -exhibit a stiff solid phase at high density, provided the temperature and the external forces or stresses are small enough. This proposal led to the idea of a jamming phase diagram for particulate systems, redrawn in Fig.…”

Section: Introductionmentioning

confidence: 99%

The jamming scenario—an introduction and outlook

Liu

Nagel

Saarloos

et al. 2011

Dynamical Heterogeneities in Glasses, Colloids, and Granular Media

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Abstract. The jamming scenario of disordered media, formulated about 10 years ago, has in recent years been advanced by analyzing model systems of granular media. This has led to various new concepts that are increasingly being explored in in a variety of systems. This chapter contains an introductory review of these recent developments and provides an outlook on their applicability to different physical systems and on future directions. The first part of the paper is devoted to an overview of the findings for model systems of frictionless spheres, focussing on the excess of low-frequency modes as the jamming point is approached. Particular attention is paid to a discussion of the cross-over frequency and length scales that govern this approach. We then discuss the effects of particle asphericity and static friction, the applicability to bubble models for wet foams in which the friction is dynamic, the dynamical arrest in colloids, and the implications for molecular glasses.

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“…In doing so, we have organised the paper in the following manner: section 2 contains an overview of the jamming phase diagram proposed by Liu and Nagel [22] followed by a brief description of theoretical attempts to explain the non-diffusive slow dynamics and aging in soft materials in the jammed state. We next focus on the SGR theory [29,30] that quantifies the flow and deformation behaviour of soft glassy materials (SGMs).…”

mentioning

confidence: 99%

“…The transition of colloidal suspensions and granular media from an ergodic to a nonergodic state can be understood in terms of the jamming of overcrowded particles, which results in kinetic arrest and ultra-slow relaxation processes [21]. For dense materials such as glasses, sandpiles and foams, Liu and Nagel [22] suggest a 'jamming' phase diagram that considers the possibility of unjamming the system (i.e driving it towards ergodicity) by increasing its temperature, by applying appropriately large shear stresses, or by decreasing the density of its constituents. Universal non-diffusive slow dynamics and aging have been observed in a variety of jammed soft materials, for example, in colloidal suspensions [2,3,7,8,23,24], concentrated emulsions [2], micellar polycrystals [2] and lamellar gels [2,25].…”

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confidence: 99%

Slow dynamics, aging, and glassy rheology in soft and living matter

Bandyopadhyay

Liang

Harden

et al. 2006

Solid State Communications

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We explore the origins of slow dynamics, aging and glassy rheology in soft and living matter. Non-diffusive slow dynamics and aging in materials characterised by crowding of the constituents can be explained in terms of structural rearrangement or remodelling events that occur within the jammed state. In this context, we introduce the jamming phase diagram proposed by Liu and Nagel to understand the ergodic-nonergodic transition in these systems, and discuss recent theoretical attempts to explain the unusual, faster-than-exponential dynamical structure factors observed in jammed soft materials. We next focus on the anomalous rheology (flow and deformation behaviour) ubiquitous in soft matter characterised by metastability and structural disorder, and refer to the Soft Glassy Rheology (SGR) model that quantifies the mechanical response of these systems and predicts aging under suitable conditions. As part of a survey of experimental work related to these issues, we present x-ray photon correlation spectroscopy (XPCS) results of the aging of laponite clay suspensions following rejuvenation. We conclude by exploring the scientific literature for recent theoretical advances in the understanding of these models and for experimental investigations aimed at testing their predictions.

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Jamming is not just cool any more

Cited by 1,830 publications

References 4 publications

Deblocking of interacting particle assemblies: from pinning to jamming

Deblocking of interacting particle assemblies: from pinning to jamming

The jamming scenario—an introduction and outlook

Slow dynamics, aging, and glassy rheology in soft and living matter

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