Results 11 to 20 of about 5,544 (263)

Review on Crystallization Strategies for Polymer Single Crystals

open access: yesCrystals
Polymer physics has evolved significantly over the past century, transitioning from the early recognition of the chain structure of polymers to a mature field integrating principles from statistical mechanics, thermodynamics, and condensed matter physics.
Tianyu Wu, Jun Xu, Haimu Ye
doaj   +2 more sources

Statistical mechanics of defects in polymer liquid crystals

open access: yesJournal de Physique II, 1992
We develop a continuum theory for the statistical mechanics of thermally activated point defects in the nematic and hexagonal phases of polymer liquid crystals. In the nematic phase, there are elementary splay defects (chain ends and hairpins), and in the hexagonal phase, there are both splay defects and twist defects.
Selinger, Jonathan, Bruinsma, Robijn
openaire   +3 more sources

Mechanical Proof of the Second Law of Thermodynamics Based on Volume Entropy [PDF]

open access: yes, 2007
In a previous work (M. Campisi. Stud. Hist. Phil. M. P. 36 (2005) 275-290) we have addressed the mechanical foundations of equilibrium thermodynamics on the basis of the Generalized Helmholtz Theorem.
Campisi, Michele
core   +1 more source

Granular Crystals: Controlling Mechanical Energy with Nonlinearity and Discreteness [PDF]

open access: yes, 2011
The presence of structural discreteness and periodicity can affect the propagation of phonons, sound, and other mechanical waves. A fundamental property of many of the periodic structures and materials designed for this purpose is the presence of ...
Boechler, Nicholas Sebastian
core   +1 more source

Line-tension model for plasticity as the Gamma-limit of a nonlinear dislocation energy [PDF]

open access: yes, 2012
In this paper we rigorously derive a line-tension model for plasticity as the Gamma-limit of a nonlinear mesoscopic dislocation energy, without resorting to the introduction of an ad hoc cut-off radius.
Scardia, L.   +4 more
core   +1 more source

Statistical mechanics of vacancy and interstitial strings in hexagonal columnar crystals [PDF]

open access: yesPhysical Review E, 2000
22 pages (revtex), 15 figures (encapsulated postscript)
Jain, Shilpa, Nelson, David R.
openaire   +3 more sources

Multiscale Modelling of Self-Organization of Non-Equilibrium Point Defects in Irradiated α-Zirconium

open access: yesУспехи физики металлов, 2017
This work is devoted to a comprehensive detailed study of a pure zirconium with non-equilibrium point defects induced by irradiation within the framework of the multiscale modelling scheme by using quantum-mechanics methods, molecular dynamics, and the ...
V. O. Kharchenko, I. O. Lysenko, O. M. Shchokotova, A. I. Bashtova, D. O. Kharchenko, Yu. M. Ovcharenko, S. V. Kokhan, X. Wu, B. Wen, L. Wu, W. Zhang
doaj   +1 more source

Statistical mechanics of crystal nuclei of hard spheres

open access: yesThe Journal of Chemical Physics
In the study of crystal nucleation via computer simulations, hard spheres are arguably the most extensively explored model system. Nonetheless, even in this simple model system, the complex thermodynamics of crystal nuclei can sometimes give rise to counterintuitive results, such as the recent observation that the pressure inside a critical nucleus is ...
Marjolein de Jager   +4 more
openaire   +7 more sources

Nonequilibrium statistical mechanics of anharmonic crystals with self-consistent stochastic reservoirs [PDF]

open access: yesPhysical Review E, 2004
We consider a d-dimensional crystal with an arbitrary harmonic interaction and an anharmonic on-site potential, with stochastic Langevin heat bath at each site. We develop an integral formalism for the correlation functions that is suitable for the study of their relaxation (time decay) as well as their behavior in space. Furthermore, in a perturbative
Pereira, Emmanuel, Falcao, Ricardo
openaire   +3 more sources

Limit of validity of Ostwald's rule of stages in a statistical mechanical model of crystallization [PDF]

open access: yesThe Journal of Chemical Physics, 2011
We have only rules of thumb with which to predict how a material will crystallize, chief among which is Ostwald's rule of stages. It states that the first phase to appear upon transformation of a parent phase is the one closest to it in free energy.
Hedges, Lester O., Whitelam, Stephen
openaire   +3 more sources

Home - About - Disclaimer - Privacy