Study of the ?-Mechanical Relaxation in Molecular Glass-Forming Liquids

1997 ◽  
Vol 7 (11) ◽  
pp. 1635-1650 ◽  
Author(s):  
A. Faivre ◽  
L. David ◽  
J. Perez
Keyword(s):  
Mechanical Relaxation ◽  
Glass Forming ◽  
Molecular Glass

scholarly journals Fast Vibrational Modes and Slow Heterogeneous Dynamics in Polymers and Viscous Liquids

2019 ◽  
Vol 20 (22) ◽  
pp. 5708 ◽  
Author(s):  
Francesco Puosi ◽  
Antonio Tripodo ◽  
Dino Leporini
Keyword(s):  
Einstein Relation ◽  
Special Focus ◽  
Vibrational Dynamics ◽  
Viscous Liquids ◽  
Dynamical Heterogeneity ◽  
Glass Forming ◽  
Slowing Down ◽  
Molecular Glass ◽  
Distinctive Aspect ◽  
Glass Forming Materials

Many systems, including polymers and molecular liquids, when adequately cooled and/or compressed, solidify into a disordered solid, i.e., a glass. The transition is not abrupt, featuring progressive decrease of the microscopic mobility and huge slowing down of the relaxation. A distinctive aspect of glass-forming materials is the microscopic dynamical heterogeneity (DH), i.e., the presence of regions with almost immobile particles coexisting with others where highly mobile ones are located. Following the first compelling evidence of a strong correlation between vibrational dynamics and ultraslow relaxation, we posed the question if the vibrational dynamics encodes predictive information on DH. Here, we review our results, drawn from molecular-dynamics numerical simulation of polymeric and molecular glass-formers, with a special focus on both the breakdown of the Stokes–Einstein relation between diffusion and viscosity, and the size of the regions with correlated displacements.

Formation of new polymorphs and control of crystallization in molecular glass-formers by electric field

2018 ◽  
Vol 20 (2) ◽  
pp. 925-931 ◽  
Author(s):  
K. Adrjanowicz ◽  
M. Paluch ◽  
R. Richert
Keyword(s):  
Molecular Weight ◽  
Electric Field ◽  
Low Molecular Weight ◽  
Glass Forming ◽  
Molecular Glass ◽  
And Control ◽  
Crystallization Tendency

We show that an electric field is able to modify the crystallization tendency of a low-molecular weight glass-forming liquid.

scholarly journals Microscopic origin of the logarithmic relaxation in molecular glass-forming liquids

2018 ◽  
Vol 98 (9) ◽  
Author(s):  
Changjiu Chen ◽  
Rithin P. Krishnan ◽  
Kaikin Wong ◽  
Dehong Yu ◽  
Fanni Juranyi ◽  
...  
Keyword(s):  
Glass Forming ◽  
Molecular Glass ◽  
Microscopic Origin

Properties of a confined molecular glass-forming liquid

2002 ◽  
Vol 14 (23) ◽  
pp. 5699-5709 ◽  
Author(s):  
Victor Teboul ◽  
Christiane Alba Simionesco
Keyword(s):  
Glass Forming ◽  
Molecular Glass
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