Professor Bill Van Megen

Position

Emeritus Professor

School /
Work Unit

School of Science

Contact Details

+61 3 9925 2140

bill.vanmegen@rmit.edu.au

Location

003.01.

City campus

College/Portfolio

Science, Engineering and Health

"Picture of Bill Van Megen"

Qualifications

B Sc (UNSW), PhD (ANU)

Research Interests

Research Projects, Consultancy and Student Project

  • Kinetics of crystallisation in binary mixture of hard colloidal spheres
  • Glass transition dynamics in hard sphere suspensions
  • Preparation of particles with novel optical properties
  • Particle characterisation
  • Particle dynamics of concentrated colloidal suspensions
  • Kinetics of crystallisation in one and two component colloidal systems of hard spheres
  • The glass transition and glassy states of matter

RESEARCH PUBLICATION

Refereed Articles

W. van Megen, “Comparison of dynamic light scattering measurements and mode-coupling theory for the tagged particle dynamics of a hard-sphere suspension”, Phys. Rev. E 76, 061401 (2007).

H.J Schöpe, G. Bryant and W. van Megen, “Effect of polydispersity on crystallization kinetics of suspensions of hard spheres when approaching the glass transition”, J. Chem. Phys. 127, 084505 (2007).

H.J Schöpe, O. Marnette, W. van Megen and G. Bryant, “Preparation and characterization of particles with small differences in polydispersity”, Langmuir 23, 11534 (2007).

W. van Megen and G. Bryant, “Dynamical heterogeneity and the freezing transition in hard-sphere suspensions: Further analysis of the mean-squared displacement and the velocity autocorrelation function”, Phys. Rev. E 76, 021402 (2007).

H.J Schöpe, G. Bryant and W. van Megen, “Small changes in particle size distribution dramatically delay and enhance nucleation in hard sphere colloidal suspensions”, Phys. Rev. E 74, 060401(R) (2006).

S.R. Williams, P. McGlyn, G. Bryant, I.K. Snook and W. van Megen, “Dynamical signatures of freezing: stable fluids, metastable fluids, and crystals”, Phys. Rev. E 74,031204 (2006).

H.J Schöpe, G. Bryant and W. van Megen, “Two-stepcrystallization kinetics in colloidal hard-sphere systems”, Phys. Rev. Lett. 96, 175701 (2006).

S.R. Williams, G. Bryant, I.K. Snook and W. van Megen, “Velocity autocorrelation function of hard-sphere fluids: long-time tails upon undercooling”, Phys. Rev. Lett. 96, 087801 (2006).

W. van Megen, “Dynamical perspective of the freezing transition of a suspension of hard spheres from the velocity autocorrelation function”, Phys. Rev. E 73, 020503(R) (2006).

W. van Megen, “Random-walk analysis of displacement statistics of particles in concentrated suspensions of hard spheres”, Phys. Rev. E 73, 011401 (2006).

W. van Megen, T.C. Mortensen and G. Bryant, “Change in relaxation scenario at the order-disorder transition of colloidal fluid of hard spheres seen from the Gaussian limit of the self-intermediate scattering function”. Phys. Rev. E 72, 031402 (2005).

S. Martin, G. Bryant and W. van Megen. “Crystallization kinetics of polydisperse colloidal hard spheres II. Binary mixtures”. Phys. Rev. E 71, 021404 (2005).

S. Martin, G. Bryant and W. van Megen. “Observation of a Smecticlike Crystalline Structure in Polydisperse Colloids”. Phys. Rev. Lett. 90, 255702 (2003).

S. Martin, G. Bryant and W. van Megen. “Crystallization kinetics of polydisperse colloidal hard spheres: Experimental evidence for local fractionation”. Phys. Rev. E 67, 061405 (2003).

G. Bryant, S. Martin, A. Budi and W. van Megen, "Accurate measurement of small polydispersities in colloidal suspensions", Langmuir, 19, 616-621 (2003). DOI: 10.1021/la026636g

P. Francis, S. Martin, G. Bryant, W. van Megen and P. Wilksch , “Crystallisation spectrometer – A spectrometer for studying the crystallisation of colloidal suspensions”. Rev. Sci. Instrum. 73: 3878-3884 (2002).

W. van Megen, "Freezing, melting and the glass transition", J. Phys.: Condens. Matter, 14, 1-19 (2002). doi: 10.1088/0953-8984/14/33/310

S.R. Williams and W. van Megen, "Motions in binary mixtures of hard colloidal spheres: Melting of the glass", Phys. Rev. E, 64, 041504(2001).

S.R. Williams, I.K. Snook and W. van Megen, "Molecular dynamics study of the stability of the hard sphere glass", Phys. Rev. E, 64, 021506 (2001).

Bryant, T. Mortensen, S. Henderson, S. Williams and W. van Megen, “Optical Contrast variation study of non-aqueous suspensions of polymer particles”, J. Colloid Interface Sc., 216, 401-408 (1999). doi:10.1006/jcis.1999.6341

B.J. Ackerson, S.Paulin, B. Johnson, W.van Megen and S.M. Underwood, “Crystallization by settling in suspensions of hard spheres”, Phys. Rev. E, 59, 6903-6913 (1999)

A. Brands, H. Versmold and W. van Megen, “Tracer particle diffusion in crystal-like ordered colloidal suspensions”, J. Chem. Phys., 110, 1283-1289 (1999.)

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”, Phys. Rev. E, 58, 6073-6085 (1998).

S.I Henderson and W. van Megen, “Metastability and Crystallization in Suspensions of Mixtures of Hard Spheres”, Phys. Rev. Letters, 80, 877-880 (1998).

Book Chapter

P. Bartlett and W. van Megen, "The Physics of Hard-Sphere Colloids",in Granular Materials, (ed. A. Mehta) Springer-Verlag, pp 62, 1994. Reviewed by R. Cahn, Physics Today, March pg. 91, 1995.

Full list of publications (PDF 77kb)