scholarly journals Asymmetric crystallization during cooling and heating in model glass-forming systems

2015 ◽  
Vol 91 (3) ◽  
Author(s):  
Minglei Wang ◽  
Kai Zhang ◽  
Zhusong Li ◽  
Yanhui Liu ◽  
Jan Schroers ◽  
...  
Keyword(s):  
Glass Forming ◽  
Model Glass

scholarly journals Energy Renormalization for Coarse-Graining the Dynamics of a Model Glass-Forming Liquid

2018 ◽  
Vol 122 (6) ◽  
pp. 2040-2045 ◽  
Author(s):  
Wenjie Xia ◽  
Jake Song ◽  
Nitin K. Hansoge ◽  
Frederick R. Phelan ◽  
Sinan Keten ◽  
...  
Keyword(s):  
Coarse Graining ◽  
Glass Forming ◽  
Model Glass ◽  
Energy Renormalization

The Importance of Transient Nucleation and Non-Equilibrium Viscosity for Glass Formation

1985 ◽  
Vol 57 ◽  
Author(s):  
Kenneth F. Kelton
Keyword(s):  
Steady State ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Volume Fraction ◽  
Molecular Cluster ◽  
Transient Effects ◽  
Glass Forming ◽  
Model Glass ◽  
Transient Nucleation ◽  
Non Equilibrium

AbstractThe process of nucleation and growth in glasses and undercooled liquids is modeled by directly simulating the evolution of the molecular cluster distribution under both isothermal and non-isothermal conditions. Results of that simulation for the nucleation rate during the quench, and for the number of nuclei produced and the volume fraction transformed at the end of the quench are presented. The following three points are discussed: (1) The importance of transient, or non-steady state, nucleation rates on glass formation is assessed by considering three model glass forming systems: lithium disilicate, a relatively good glass former, and two metallic glasses, (Au85Cu15)77Si9Gd14 and Au81Si19. (2) Using experimentally determined values for the steady state nucleation rates and growth velocities for Pd40Ni40P20, it is demonstrated that, in agreement with recent experimental results, this alloy may be cycled at rates on the order of 1 K/sec between the melting and glass transition temperatures without crystallization. Transient effects are shown to be unimportant under these conditions in this system. (3) The effect on glass formation of a non-equilibrium viscosity during the quench due to configurational freezing is evaluated by assuming a phenomenological model for the changing viscosity.

scholarly journals Evolution of collective motion in a model glass-forming liquid during physical aging

2013 ◽  
Vol 138 (12) ◽  
pp. 12A528 ◽  
Author(s):  
Amit Shavit ◽  
Jack F. Douglas ◽  
Robert A. Riggleman
Keyword(s):  
Physical Aging ◽  
Collective Motion ◽  
Glass Forming ◽  
Model Glass

Influence of Backbone Rigidity on Nanoscale Confinement Effects in Model Glass-Forming Polymers

2013 ◽  
Vol 46 (12) ◽  
pp. 5044-5052 ◽  
Author(s):  
Amit Shavit ◽  
Robert A. Riggleman
Keyword(s):  
Confinement Effects ◽  
Glass Forming ◽  
Model Glass

scholarly journals Crossover to potential energy landscape dominated dynamics in a model glass-forming liquid

2000 ◽  
Vol 112 (22) ◽  
pp. 9834-9840 ◽  
Author(s):  
Thomas B. Schrøder ◽  
Srikanth Sastry ◽  
Jeppe C. Dyre ◽  
Sharon C. Glotzer
Keyword(s):  
Potential Energy ◽  
Energy Landscape ◽  
Glass Forming ◽  
Model Glass ◽  
Potential Energy Landscape

Novel hole-transporting carbazole main chain oligomer and its model glass-forming compound

2002 ◽  
Vol 49 (2-3) ◽  
pp. 95-101 ◽  
Author(s):  
Jolita Ostrauskaite ◽  
Vygintas Jankauskas ◽  
Juozas V. Grazulevicius
Keyword(s):  
Main Chain ◽  
Glass Forming ◽  
Model Glass ◽  
Hole Transporting

Vitrification and Morphological Stability of Liquid Crystals

1996 ◽  
Vol 425 ◽  
Author(s):  
J. C. Mastrangelo ◽  
S. H. Chen ◽  
T. N. Blanton ◽  
A. Bashir-Hashemi-
Keyword(s):  
Liquid Crystals ◽  
Hybrid System ◽  
Glass Forming Ability ◽  
Pendant Group ◽  
Morphological Stability ◽  
Structural Balance ◽  
Glass Forming ◽  
Model Glass

AbstractBased on the extensive database collected for model glass-forming liquid crystals with various mesogenic groups attached to benzene, cubane, cis- and trans-cyclohexane, and all-exobicyclo[ 2.2.2]oct-7-ene, it was found that the glass-forming ability and morphological stability are determined by a delicate structural balance between the volume-excluding core and the pendant group, and the stereochemical features of the hybrid system.

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