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Articles 1 - 22 of 22

Full-Text Articles in Physics

Current Issues In Research On Structure-Property Relationships In Polymer Nanocomposites, J. Jancar, J. Douglas, Francis Starr, S. Kumar, P. Cassagnau, A. Lesser, S. Sternstein, M. Buehler Jan 2010

Current Issues In Research On Structure-Property Relationships In Polymer Nanocomposites, J. Jancar, J. Douglas, Francis Starr, S. Kumar, P. Cassagnau, A. Lesser, S. Sternstein, M. Buehler

Francis Starr

No abstract provided.


Breakdown Of The Stokes-Einstein Relation In Supercooled Water, P. Kumar, S. Buldyrev, S. Becker, P. Poole, Francis Starr, H. Stanley Jan 2007

Breakdown Of The Stokes-Einstein Relation In Supercooled Water, P. Kumar, S. Buldyrev, S. Becker, P. Poole, Francis Starr, H. Stanley

Francis Starr

No abstract provided.


Connection Of Translational And Rotational Dynamical Heterogeneities With The Breakdown Of The Stokes-Einstein And Stokes-Einstein-Debye Relations In Water, M. G. Mazza, N. Giovambattista, H. E. Stanley, Francis W. Starr Jan 2007

Connection Of Translational And Rotational Dynamical Heterogeneities With The Breakdown Of The Stokes-Einstein And Stokes-Einstein-Debye Relations In Water, M. G. Mazza, N. Giovambattista, H. E. Stanley, Francis W. Starr

Francis Starr

No abstract provided.


Fractional Stokes-Einstein And Debye-Stokes-Einstein Relations In A Network Forming Liquid, S. Becker, P. Poole, Francis Starr Jan 2006

Fractional Stokes-Einstein And Debye-Stokes-Einstein Relations In A Network Forming Liquid, S. Becker, P. Poole, Francis Starr

Francis Starr

No abstract provided.


Weak Correlations Between Local Density And Dynamics Near The Glass Transition, J. Conrad, Francis Starr, D. Weitz Jan 2005

Weak Correlations Between Local Density And Dynamics Near The Glass Transition, J. Conrad, Francis Starr, D. Weitz

Francis Starr

We perform experiments on two different dense colloidal suspensions with confocal microscopy to probe the relationship between local structure and dynamics near the glass transition. We calculate the Voronoi volume for our particles and show that this quantity is not a universal probe of glassy structure for all colloidal suspensions. We correlate the Voronoi volume to displacement and find that these quantities are only weakly correlated. We observe qualitatively similar results in a simulation of a polymer melt. These results suggest that the Voronoi volume does not predict dynamical behavior in experimental colloidal suspensions; a purely structural approach based on …


Clusters Of Mobile Molecules In Supercooled Water, Nicolas Giovambattista, Sergey Buldyrev, H. Stanley, Francis Starr Jan 2005

Clusters Of Mobile Molecules In Supercooled Water, Nicolas Giovambattista, Sergey Buldyrev, H. Stanley, Francis Starr

Francis Starr

No abstract provided.


Prediction Of Entropy And Dynamic Properties Of Water Below The Homogeneous Nucleation Temperature, Francis Starr, C. Angell, H. Stanley Jan 2003

Prediction Of Entropy And Dynamic Properties Of Water Below The Homogeneous Nucleation Temperature, Francis Starr, C. Angell, H. Stanley

Francis Starr

The behavior of thermodynamic and dynamic properties of liquid water at atmospheric pressure in the temperature range between the lower limit of supercooling (TH ≈ 235 K) and the onset of the glassy state at Tg has been the focus of much research, and many questions remain about the properties of water in this region. Since direct measurements on water in this temperature range remain largely infeasible, we use existing experimental measurements of the entropy, specific heat, and enthalpy outside this range to construct a possible form of the en- tropy in the “difficult-to-probe” region. Assuming that the entropy is …


Dynamics Of Deeply Supercooled Water, Francis W. Starr, C. A. Angell, E. La Nave, S. Sastry, A. Scala, F. Sciortino, H. E. Stanley Jan 2003

Dynamics Of Deeply Supercooled Water, Francis W. Starr, C. A. Angell, E. La Nave, S. Sastry, A. Scala, F. Sciortino, H. E. Stanley

Francis Starr

We review recent results on the connection between thermodynamics and dynamics in a model for water. We verify the Adam–Gibbs relation between entropy and dynamic properties using computer simulations, which allow direct access to the relevant properties. We combine experimental measurements of entropy with the Adam–Gibbs hypothesis to predict dynamic properties in deeply supercooled states, which are difficult to access experimentally. We find evidence suggesting that the glass transition temperature of water may be significantly higher than previously reported, but is still consistent with recent measurements. Finally, we discuss the hypothesis that the dynamical behavior of deeply supercooled water undergoes …


Stringlike Correlated Motion In The Dynamics Of Supercooled Polymer Melts, M. Aichele, Y. Gebremichael, Francis Starr, J. Baschnagel, S. C. Glotzer Jan 2003

Stringlike Correlated Motion In The Dynamics Of Supercooled Polymer Melts, M. Aichele, Y. Gebremichael, Francis Starr, J. Baschnagel, S. C. Glotzer

Francis Starr

No abstract provided.


Spatially Heterogeneous Dynamics Investigated Via A Time-Dependent Four-Point Density Correlation Function, N. Lacevic, T. B. Schroder, Francis W. Starr, S. C. Glotzer Jan 2003

Spatially Heterogeneous Dynamics Investigated Via A Time-Dependent Four-Point Density Correlation Function, N. Lacevic, T. B. Schroder, Francis W. Starr, S. C. Glotzer

Francis Starr

No abstract provided.


Growing Correlation Length On Cooling Below The Onset Of Caging In A Simulated Glass-Forming Liquid, N. Lacevic, Francis W. Starr, T. B. Schrøder, V. N. Novikov, S. C. Glotzer Jan 2002

Growing Correlation Length On Cooling Below The Onset Of Caging In A Simulated Glass-Forming Liquid, N. Lacevic, Francis W. Starr, T. B. Schrøder, V. N. Novikov, S. C. Glotzer

Francis Starr

No abstract provided.


Molecular Dynamics Simulation Of A Polymer Melt With A Nanoscopic Particle, Francis W. Starr, T. B. Schroder, S. C. Glotzer Jan 2002

Molecular Dynamics Simulation Of A Polymer Melt With A Nanoscopic Particle, Francis W. Starr, T. B. Schroder, S. C. Glotzer

Francis Starr

No abstract provided.


Transitions Between Inherent Structures In Water, Nicolas Giovambattista, Francis W. Starr, Francesco Sciortino, Sergey V. Buldyrev, H. Eugene Stanley Jan 2002

Transitions Between Inherent Structures In Water, Nicolas Giovambattista, Francis W. Starr, Francesco Sciortino, Sergey V. Buldyrev, H. Eugene Stanley

Francis Starr

No abstract provided.


Spatially Correlated Dynamics In A Simulated Glass-Forming Polymer Melt: Analysis Of Clustering Phenomena, Y. Gebremichael, T. B. Schroder, Francis W. Starr, S. C. Glotzer Jan 2001

Spatially Correlated Dynamics In A Simulated Glass-Forming Polymer Melt: Analysis Of Clustering Phenomena, Y. Gebremichael, T. B. Schroder, Francis W. Starr, S. C. Glotzer

Francis Starr

No abstract provided.


Effects Of A Nanoscopic Filler On The Structure And Dynamics Of A Simulated Polymer Melt And The Relationship To Ultra-Thin Films, Francis W. Starr, T. B. Schroder, S. C. Glotzer Jan 2001

Effects Of A Nanoscopic Filler On The Structure And Dynamics Of A Simulated Polymer Melt And The Relationship To Ultra-Thin Films, Francis W. Starr, T. B. Schroder, S. C. Glotzer

Francis Starr

No abstract provided.


Dynamics Of Supercooled Water In Configuration Space, Emilia La Nave, Antonio Scala, Francis W. Starr, Francesco Sciortino, H. Eugene Stanley Jan 2001

Dynamics Of Supercooled Water In Configuration Space, Emilia La Nave, Antonio Scala, Francis W. Starr, Francesco Sciortino, H. Eugene Stanley

Francis Starr

No abstract provided.


Thermodynamic And Structural Aspects Of The Potential Energy Surface Of Simulated Water, Francis W. Starr, S. Sastry, E. La Nave, A. Scala, H. E. Stanley, F. Sciortino Jan 2001

Thermodynamic And Structural Aspects Of The Potential Energy Surface Of Simulated Water, Francis W. Starr, S. Sastry, E. La Nave, A. Scala, H. E. Stanley, F. Sciortino

Francis Starr

No abstract provided.


Instantaneous Normal Mode Analysis Of Supercooled Water, E. La Nave, A Scala, Francis W. Starr, F. Sciortino, H. E. Stanley Jan 2000

Instantaneous Normal Mode Analysis Of Supercooled Water, E. La Nave, A Scala, Francis W. Starr, F. Sciortino, H. E. Stanley

Francis Starr

No abstract provided.


Free Energy Surface Of Supercooled Water, A. Scala, Francis W. Starr, E. La Nave, H. E. Stanley, F. Sciortino Jan 2000

Free Energy Surface Of Supercooled Water, A. Scala, Francis W. Starr, E. La Nave, H. E. Stanley, F. Sciortino

Francis Starr

No abstract provided.


Hydrogen Bond Dynamics In The Extended Simple Point, Francis W. Starr, J. K. Nielson, H. E. Stanley Jan 2000

Hydrogen Bond Dynamics In The Extended Simple Point, Francis W. Starr, J. K. Nielson, H. E. Stanley

Francis Starr

No abstract provided.


Structure Of Supercooled And Glassy Water, Francis W. Starr, M. C. Bellissent-Funel, H. E. Stanley Jan 1999

Structure Of Supercooled And Glassy Water, Francis W. Starr, M. C. Bellissent-Funel, H. E. Stanley

Francis Starr

No abstract provided.


Fast And Slow Dynamics Of Hydrogen Bonds In Liquid, Francis W. Starr, J. K. Nielson, H. E. Stanley Jan 1999

Fast And Slow Dynamics Of Hydrogen Bonds In Liquid, Francis W. Starr, J. K. Nielson, H. E. Stanley

Francis Starr

No abstract provided.