Reference : Structural Transition in a Fluid of Spheroids: A Low-Density Vestige of Jamming
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/26109
Structural Transition in a Fluid of Spheroids: A Low-Density Vestige of Jamming
English
Cohen, A. P. [Physics Department, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel]
Dorosz, S. [Research Unit for Physics and Materials Science, Université du Luxembourg, Luxembourg, Luxembourg]
Schofield, A. B. [School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom]
Schilling, Tanja mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
Sloutskin, E. [Physics Department, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel]
2016
Physical Review Letters
American Physical Society
116
9
Yes (verified by ORBilu)
International
0031-9007
[en] Aspect ratio ; Degrees of freedom (mechanics) ; Fluids ; Jamming ; Liquids ; Thermodynamics ; Continuous deformations ; Hard spheroids ; Individual particles ; Liquid liquid phase transitions ; Nonanalyticity ; Rotational degrees of freedom ; Simple modeling ; Structural transitions ; Phase transitions
[en] A thermodynamically equilibrated fluid of hard spheroids is a simple model of liquid matter. In this model, the coupling between the rotational degrees of freedom of the constituent particles and their translations may be switched off by a continuous deformation of a spheroid of aspect ratio t into a sphere (t=1). We demonstrate, by experiments, theory, and computer simulations, that dramatic nonanalytic changes in structure and thermodynamics of the fluids take place, as the coupling between rotations and translations is made to vanish. This nonanalyticity, reminiscent of a second-order liquid-liquid phase transition, is not a trivial consequence of the shape of an individual particle. Rather, free volume considerations relate the observed transition to a similar nonanalyticity at t=1 in structural properties of jammed granular ellipsoids. This observation suggests a deep connection to exist between the physics of jamming and the thermodynamics of simple fluids. © 2016 American Physical Society.
http://hdl.handle.net/10993/26109
10.1103/PhysRevLett.116.098001

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