Stephen R. Williams

Senior Research Fellow, Research School of Chemistry
The Australian National University

Research Interests

Nonequilibrium Statistical Mechanics
Molecular Dynamics Simulation
Simulation and Statistical Mechanics of Realistic Model Glass Formers
Frustration of Crystallisation in Supercooled Fluids and Amorphous Solids

Collaborators, Colleagues, etc.

Denis Evans
Debra Searles (Bernhardt)
Paddy Royall
Gary Bryant
Bill van Megen
Edie Sevick
Ian Snook
Peter Daivis
Lamberto Rondoni
Peter Harrowell

Book Chapters

2)        D. J. Evans, D. J. Searles and S. R. Williams 
           A Simple Mathematical Proof of Boltzmann's Equal
           a priori Probability Hypothesis
           in, Diffusion Fundamentals III, pp. 367 - 374
           Eds. C. Chmelik, N. Kanellopoulos, J. Kärger, D. Theodorou
           (Leipziger Universitätsverlag, Leipzig) 2009
           ISBN 978-3-86583-387-7

1)        W. van Megen, S. I. Henderson, S. R. Williams and I. K. Snook
           Crystallisation and Metastability of Binary Fluids
           in Statistical Physics: Experiments, Theories and Computer simulations,
           Eds. M. Tokuyama and I. Oppenheim
           (World Scientific, Singapore) 1998

Journal Publications (in reverse chronological order)

47)     J. Taffs, S. R. Williams, H. Tanaka and C. P. Royall
           Structure and Kinetics in the Freezing of Nearly Hard Spheres
             Soft Matter, 9, 297-305 (2013).

46)     D. J. Evans, S. R. Williams and L. Rondoni
           A Mathematical Proof of the Zeroth "Law" of Thermodynamics and the nonlinear
             Fourier "Law" for Heat Flow
             Journal of Chemical Physics, 137, 194109 (2012).

45)     P. C. Aeberhard, S. R. Williams, D. J. Evans, K. Refson and W. I. F. David
           Ab initio Nonequilibrium Molecular Dynamics in the Solid Superionic Conductor LiBH₄
             Physical Review Letters, 108, 095901 (2012).

44)     X. Y. Gao, G. M. Wang, D. R. M. Williams, S. R. Williams, D. J. Evans and E. M. Sevick
           Non-equilibrium umbrella sampling applied to force spectroscopy of soft matter
             Journal of Chemical Physics, 136, 054902 (2012).

43)     D. J. Evans, S. R. Williams and D. J. Searles
           On the entropy of relaxing deterministic systems
             Journal of Chemical Physics, 135, 194107 (2011).

42)      S. R. Williams
           Broken-ergodicity and the emergence of solid behaviour
              in amorphous materials
              Journal of Chemical Physics, 135, 131102 (2011).

41)      S. R. Williams, D. J. Evans and D. J. Searles
           Nonequilibrium Umbrella Sampling and
             The Functional Crooks Fluctuation Theorem
             Journal of Statistical Physics, 145, 831-840 (2011).

40)      D. J. Evans, S. R. Williams and D. J. Searles
           A proof of Clausius' theorem for time reversible deterministic
           microscopic dynamics
           Journal of Chemical Physics, 134, 204113 (2011).
            
39)      C. P. Royall and S. R. Williams
           C60: The First One-Component Gel?
           Journal of Physical Chemistry B, 115, 7288 (2011).

38)      A. Malins, S. R. Williams, J. Eggers, H. Tanaka and C. P. Royall
           The effect of inter-cluster interactions on the structure of colloidal clusters
           Journal of Non-Crystalline Solids, 357, 760-766 (2011).

37)      J. Taffs, A. Malins, S. R. Williams and C. P. Royall
           The effect of attractions on the local structure of liquids and colloidal fluids
           Journal of Chemical Physics, 133, 244901, (2010).

36)      S. R. Williams and D. J. Evans
           Nonequilibrium dynamics and umbrella sampling
           Physical Review Letters, 105, 110601 (2010).

35)      D. J. Evans, D. J. Searles and S. R. Williams
           Musings On Thermostats
           Journal of Chemical Physics, 133, 104106 (2010).

34)      D. J. Evans, D. J. Searles and S. R. Williams
           The covariant dissipation function for transient nonequilibrium states
           Journal of Chemical Physics, 133, 054507 (2010).

33)      S. R. Williams and D. J. Evans
           The Rheology of Solid Glass
           Journal of Chemical Physics, 132, 184105 (2010).

32)      W. van Megen and S. R. Williams
           Comment on "Probing the equilibrium dynamics of colloidal
           hard spheres above the mode-coupling glass transition"
           Physical Review Letters, 104, 169601 (2010).

31)      J. C. Reid, S. R. Williams and D. J. Searles
           Applying bi-directional Jarzynski methods to
           quasi-equilibrium states
           Australian Journal of Chemistry, 63, 357 (2010).

30)      J. Taffs, A. Malins, S. R. Williams and C. P. Royall
           A structural comparison of models of colloid-polymer mixtures
           Journal of Physics: Condensed Matter, 22, 104119 (2010).

29)      D. J. Evans, D. J. Searles and S. R. Williams
           On the probability of violations of Fourier's Law for heat flow
           in small systems observed for short times
           Journal of Chemical Physics, 132, 024501 (2010).

28)      P. Dasmeh, D. J. Searles, D. Ajloo, D. J. Evans and S. R. Williams
           On violations of Le Chatelier's principle for a temperature change in
           small systems observed for short times
           Journal of Chemical Physics,  131, 214503 (2009).
           Selected for, JCP: BioChemical Physics, Dec 15 (2009) issue.

27)      A. Malins, S. R. Williams, J. Eggers, H. Tanaka and C. P. Royall
           Geometric frustration in small colloidal clusters
           Journal of Physics: Condensed Matter, 21, 425103 (2009).

26)      D. J. Evans, D. J. Searles and S. R. Williams
           Dissipation and the Relaxation to Equilibrium
           Journal of Statistical Mechanics: theory and experiment, P07029 (2009).

25)      S. R. Williams and D. J. Evans
           The Viscoelastic Properties of Crystals
           Journal of Chemical Physics,  131, 024115 (2009).

24)      S. R. Williams, D. J. Searles and D. J. Evans
           The glass transition and the Jarzynski equality
           Journal of Chemical Physics, 129, 134504 (2008).

23)      S. R. Williams, and D. J. Evans
           Time-dependent response theory and nonequilibrium free-energy relations
           Physical Review E, 78, 021119 (2008).

22)      S. R. Williams, D. J. Searles and D. J. Evans
           Nonequilibrium free energy relations for thermal changes
           Physical Review Letters, 100, 250601 (2008).

21)      S. R. Williams, C. P. Royall and G. Bryant
           Crystallisation of Dense Binary Hard Sphere Mixtures with Marginal Size Ratio
           Physical Review Letters, 100, 225502 (2008).
           Selected for the Virtual Journal of Nanoscale Science & Technology, 17, issue 24 (2008).

20)      C. P. Royall, S. R. Williams, T. Ohtsuka and H. Tanaka
           Direct observation of a local structural mechanism for dynamic arrest
           Nature Materials, 7, 556-561 (2008).

19)      E. M. Sevick, R. Prabhakar, S. R. Williams and D. J. Searles
           Fluctuation Theorems
           Annual Review of Physical Chemistry, 59, 603-633 (2008).

18)      D. J. Evans, D. J. Searles and S. R. Williams
           On the Fluctuation Theorem for the Dissipation Function and its connection 
           with Response Theory
           Journal of Chemical Physics, 128, 014504 (2008).

17)      A. Wouterse, S. R. Williams and A. P. Philipse
           Effect of particle shape on the density and microstructure of random packings
           Journal of Physics: Condensed Matter, 19, 406215 (2007).

16)      S. R. Williams and D. J. Evans 
           Statistical Mechanics of Time Independent Non-Dissipative Nonequilibrium States
           Journal of Chemical Physics, 127, 184101 (2007).

15)      S. R. Williams, D. J. Searles and D. J. Evans
           Deterministic Derivation of NonEquilibrium Free Energy
           Theorems for Natural Isothermal Isobaric Systems
           Molecular Physics, 105, 1059-1066 (2007).

14)      S. R. Williams, D. J. Evans and E. Mittag
           Negative Entropy Production in Oscillatory Processes
           Comptes Rendus Physique, 8, 620-624 (2007).

13)      E. Mittag, D. J. Evans and S. R. Williams
           Verification of time-reversibility requirement for systems satisfying
           the Evans-Searles Fluctuation Theorem
           Pure and Applied Chemistry, 79, 8, 1361-1368 (2007).

12)      S. R. Williams, P. McGlynn, G. Bryant, I. K. Snook and W. van Megen
           Dynamical Signatures of Freezing: Stable Fluids, Metastable Fluids, and Crystals
           Physical Review E, 74, 031204 (2006).

11)      S. R. Williams, D. J. Searles and D. J. Evans
           Numerical study of the steady-state fluctuation relations far from equilibrium
           Journal of Chemical Physics, 124, 194102 (2006).
           Selected for the Virtual Journal of Nanoscale Science & Technology, 13, issue 22 (2006).

10)      S. R. Williams, G. Bryant, I. K. Snook and W. van Megen
           Velocity autocorrelation functions of hard-sphere fluids: Long-time
           tails upon undercooling
           Physical Review Letters, 96, 087801 (2006).

9)        S. R. Williams and D. J. Evans
           Linear response domain in glassy systems
           Physical Review Letters, 96, 015701 (2006).

8)        S. R. Williams, D. J. Searles and D. J. Evans
           Independence of the transient fluctuation theorem to thermostatting details
           Physical Review E, 70, 066113 (2004).

7)        D. M. Carberry, S. R. Williams, G. M. Wang, E. M. Sevick and D. J. Evans
           The Kawasaki identity and the fluctuation theorem
           Journal of Chemical Physics, 121, 8179 – 8182 (2004).

6)        S. R. Williams and A. P. Philipse
           Random packings of spheres and spherocylinders simulated by mechanical contraction
           Physical Review E, 67, 051301 (2003).

5)        G. Bryant, S. R. Williams, Q. LinMao, I. K. Snook, E. Perez and F. Pincet
           How hard is a colloidal ‘hard sphere’ interaction
           Physical Review E, 66, 060501 (2002).

4)        S. R. Williams and W. van Megen
           Motions in binary mixtures of hard colloidal spheres: Melting of the glass
           Physical Review E, 64, 041502 (2001).

3)        S. R. Williams, I. K. Snook and W. van Megen
           A Molecular dynamics study of the stability of the hard sphere glass
           Physical Review E, 64, 021506 (2001).

2)        G. Bryant, T. Mortensen, S. Henderson, S. Williams and W. van Megen
           Optical contrast variation study of nonaqueous suspensions of polymer particles
           Journal of Colloid and Interface Science, 216, 401 (1999).

1)        W. van Megen, T. C. Mortensen, S. R. Williams and J. Müller
           Measurement of the self-intermediate scattering function of suspensions
           of hard spherical particles near the glass transition
           Physical Review E, 58, 6073 (1998).

Refereed Conference Proceedings

6)        D. J. Evans, D. J. Searles, J. Reid and S. R. Williams.
           Fluctuation theorems and the foundations of statistical mechanics
           Annual International Conference on Composites/Nano Engineering (ICCE 2010),
           Sun Light Publishing Canada, Canada, pp. 411/1-2.

5)        S. R. Williams and D. J. Evans
           Statistical Mechanics of Time Independent Non-Dissipative Nonequilibrium States
           in Complex Systems, AIP conf. proc. 982, 74-78 (2008).

4)        C. P. Royall, S. R. Williams, T. Ohtsuka and H. Tanaka
           Direct Observation of Low-Energy Clusters in a Colloidal Gel
           in Complex Systems, AIP conf. proc. 982, 97-101 (2008).

3)        S. R. Williams and W. van Megen
           The glass transition in binary mixtures of hard colloidal spheres
           in Statistical Physics, AIP conf. proc. 519, 3-10 (2000).

2)        S. R. Williams and W. van Megen
           The effect of composition on the glass transition
           in Slow Dynamics in Complex Systems, AIP conf. proc. 469, 531-532 (1999).

1)        G. Bryant, T. C. Mortensen, S. I. Henderson, S. R. Williams and W. van Megen
           Optical properties of polymer particles used for contrast variation studies of phase transitions
           in Slow Dynamics in Complex Systems, AIP conf. proc. 469, 529-530 (1999).