Flow-Induced Orientation and Stretching of Entangled Polymers in the Framework of Nonequilibrium Thermodynamics

2016 ◽  
Vol 49 (8) ◽  
pp. 3161-3173 ◽  
Author(s):  
Pavlos S. Stephanou ◽  
Ioanna Ch. Tsimouri ◽  
Vlasis G. Mavrantzas
Keyword(s):  
Nonequilibrium Thermodynamics ◽  
Entangled Polymers

scholarly journals Nonequilibrium thermodynamics of acoustic phonons in suspended graphene

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Robin J. Dolleman ◽  
Gerard J. Verbiest ◽  
Yaroslav M. Blanter ◽  
Herre S. J. van der Zant ◽  
Peter G. Steeneken
Keyword(s):  
Nonequilibrium Thermodynamics ◽  
Acoustic Phonons ◽  
Suspended Graphene

scholarly journals Nonequilibrium thermodynamics of erasure with superconducting flux logic

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Olli-Pentti Saira ◽  
Matthew H. Matheny ◽  
Raj Katti ◽  
Warren Fon ◽  
Gregory Wimsatt ◽  
...  
Keyword(s):  
Nonequilibrium Thermodynamics

Rational Design of Novel Materials From Polymer Microrheology

2010 ◽  
Author(s):  
Rodrigo E. Teixeira ◽  
Richard S. Graham
Keyword(s):  
Rational Design ◽  
Molecular Level ◽  
Pressure Vessels ◽  
Novel Materials ◽  
Entangled Polymers ◽  
Stochastic Fluctuations ◽  
Safety Margins ◽  
Polymer Liquids ◽  
Entangled Polymer ◽  
High Degree

The visco-elastic properties of entangled polymer liquids arise from molecular-scale topological interactions and stochastic fluctuations under flow. Here, the evolutions of individual entangled polymers were observed in rheologically relevant shear flow histories. We uncover a high degree of molecular individualism and broad conformational distributions resulting from incessant stretch-collapse cycles. The data and insights of the present study may lead to improved molecular-level models and constitutive equations. These tools, in turn, may enable the rational design of novel materials with properties tailored to accomplish specific tasks such as high-pressure vessels and piping with greater safety margins and cost-effectiveness.

Biological Senescence: Loss of Integration and Resilience

1995 ◽  
Vol 14 (1) ◽  
pp. 106-120 ◽  
Author(s):  
F. Eugene Yates ◽  
Laurel A. Benton
Keyword(s):  
Degrees Of Freedom ◽  
Nonequilibrium Thermodynamics ◽  
Physical Basis ◽  
Biological Age ◽  
Chronological Age ◽  
Nonlinear Mechanics ◽  
Internal Time ◽  
Flow Of Time

ABSTRACTThe flow of time can be conceptualized either as a cycle or an arrow. We offer a combined view: a helix. Chronological age (geophysical time reference) is not necessarily identical to biological age (internal time reference), and aging does not necessarily imply senescence. A new scheme of senescence, based on homeodynamics (nonlinear mechanics and nonequilibrium thermodynamics), is introduced as a plausible physical basis for understanding senescence. We propose that energy throughput, initially constructive of forms and functions, becomes destructive once most of the available degrees of freedom have been “frozen out” by the construction. Senescence becomes manifested at that point.

scholarly journals FIELD THEORY OF N ENTANGLED POLYMERS

2000 ◽  
Vol 14 (32) ◽  
pp. 3881-3895 ◽  
Author(s):  
FRANCO FERRARI ◽  
HAGEN KLEINERT ◽  
IGNAZIO LAZZIZZERA
Keyword(s):  
Field Theory ◽  
Canonical Ensemble ◽  
Feynman Diagrams ◽  
Linking Number ◽  
Entangled Polymers

We formulate a field theory capable of describing a canonical ensemble of N polymers subjected to linking number constraints in terms of Feynman diagrams.

Sign in / Sign up

Export Citation Format

Share Document