Dr Toby Hudson

BSc(Adv) Sydney; DPhil Oxford
Lecturer

F11 - Chemistry Building
The University of Sydney

Telephone 61 2 9036 7648
Fax 61 2 9351 3329

Website Research Group
Contact Details

Biographical details

Toby Hudson is a Lecturer in Theoretical Materials Chemistry in the School of Chemistry at the University of Sydney. In 2008 he completed a Sydney University Postdoctoral fellowship. His D.Phil. was in Materials Science at the University of Oxford in 2000-2004, modelling neutron damage in metals for fusion reactors, and he continued at the Oxford Materials Modelling Laboratory for a postdoctoral year studying silicon nitride crystal interfaces. His undergraduate degree was a B.Sc.(Adv.) at the University of Sydney, majoring in chemistry and physics, with an honours year in computational chemistry (class 1 and university medal).

  • B. Sc. (Adv) (Hons I & Medal), Chemistry, Sydney, 1999
  • D. Phil., Materials Science, Oxford, 2004
  • Postdoctoral Researcher, Oxford, 2004-2005
  • Sydney University Postdoctoral Fellow, Sydney, 2005-2008
  • Lecturer in Theoretical Materials Chemistry, Sydney, 2008-

Research interests

  • Materials structure
  • Defect motion and structural evolution
  • Network materials
  • Liquids and glasses
  • Crystal growth
  • Monte Carlo simulation
  • Structural search algorithms

Current projects

My research is currently focussed on the following areas:

  1. Determining how local rearrangement mechanisms in network liquids and glasses achieve stress relaxation, and hence flow. This will also give a detailed picture of how collective processes such as crystallization begin. (with Prof P. Harrowell, Usyd).
  2. Optimal dense packing of binary compounds. Combining data-mining and Monte Carlo methods, we have discovered some structures that are able to pack two-component hard sphere systems more densely than if the components were separated and close packed. We are currently optimising these structures, and will determine their contribution to the binary hard sphere phase diagram. This project has application to pressure transitions and densely packed colloidal systems such as opals.
  3. Improving structural search algorithms. Numerous artificial intelligence methods have been developed by computer scientists, but applying them to chemical structures is nontrivial. By importing chemically reasonable mechanisms and structures into these methods we are able to sample the structural configuration space fast enough to rapidly equilibrate, or identify ground state structures.

Visit my home page for research activities.http://www.chem.usyd.edu.au/~hudson_t/research.shtml

Awards and honours

  • The University Medal, University of Sydney, 1999

Selected grants

2009

  • Atomistic Mechanisms of Stress Relaxation in Amorphous Materials; Harrowell P, Hudson T; Australian Research Council (ARC)/Discovery Projects (DP).

2005

  • Structural optimisation of complex crystals using evolutionary algorithms.; University of Sydney/Postdoctoral Fellowship.

Selected publications

Download citations: PDF RTF Endnote

Journals

  • Elias, N., Hudson, T. (2012). Structural search for dense packing of concave and convex shapes in two dimensions. Journal of Physics: Conference Series, 402(1), 1-7. [More Information]
  • Pedersen, U., Hudson, T., Harrowell, P. (2011). Crystallization of the Lewis-Wahnstrom ortho-terphenyl model. Journal of Chemical Physics, 134(11), 114501-1-114501-6. [More Information]
  • O'Toole, P., Hudson, T. (2011). New High-Density Packings of Similarly sized Binary Spheres. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 115(39), 19037-19040.
  • Hudson, T., Harrowell, P. (2011). Structural searches using isopointal sets as generators: densest packings for binary hard sphere mixtures. Journal of Physics: Condensed Matter, 23(19), 194103-1-194103-6. [More Information]
  • Marshall, G., Hudson, T. (2010). Dense binary sphere packings. Beitraege zur Algebra und Geometrie (Contributions to Algebra and Geometry), 51(2), 337-344.
  • Hudson, T. (2010). Dense sphere packing in the NaZn(-13) structure type. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 114(33), 14013-14017.
  • Hudson, T., Harrowell, P. (2008). Dense Packings of Hard Spheres of Different Sizes Based on Filling Interstices in Uniform Three-Dimensional Tilings. The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces and Biophysical, 112(27), 8139-8143.
  • Kummerfeld, J., Hudson, T., Harrowell, P. (2008). The Densest Packing of AB Binary Hard-Sphere Homogeneous Compounds across all Size Ratios. The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces and Biophysical, 112(35), 10773-10776.
  • Hudson, T., Harrowell, P. (2007). A systematic enumeration of local topological relaxation mechanisms in amorphous networks and their efficiency in network relaxation. Journal of Chemical Physics, 126(18), 184502-1-184502-5.
  • Hudson, T., Nguyen-Manh, D., van Duin, A., Sutton, A. (2006). Grand canonical Monte Carlo simulations of intergranular glassy films in beta silicon nitride. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 422(1 to 2), 123-135.
  • Winkelman, G., Dwyer, C., Marsh, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Cockayne, D. (2006). The crystal/glass interface in doped Si3N4. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 422, 77-84.
  • Hudson, T., Dudarev, S., Caturla, M., Sutton, A. (2005). Effects of elastic interactions on post-cascade radiation damage evolution in kinetic Monte Carlo simulations. Philosophical Magazine (London, 2003), 85(4-7), 661-675.
  • Mason, D., Hudson, T., Sutton, A. (2005). Fast recall of state-history in kinetic Monte Carlo simulations utilizing the Zobrist key. Computer Physics Communications, 165, 37-48. [More Information]
  • Winkelman, G., Dwyer, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Satet, R., Hoffmann, M., Cockayne, D. (2005). Three-dimensional organization of rare-earth atoms at grain boundaries in silicon nitride. Applied Physics Letters, 87, 061911-1-061911-3.
  • Winkelman, G., Dwyer, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Satet, R., Hoffmann, M., Cockayne, D. (2004). Arrangement of rare-earth elements at prismatic grain boundaries in silicon nitride. Philosophical Magazine Letters, 84(12), 755-762.
  • Hudson, T., Dudarev, S., Sutton, A. (2004). Confinement of interstitial cluster diffusion by oversized solute atoms. Proceedings of the Royal Society of London. Mathematical, Physical and Engineering Sciences, 460(2049), 2457-2475.
  • Hudson, T., Dudarev, S., Sutton, A. (2004). Suppression of interstitial cluster diffusion by oversized solute atoms. Journal of Nuclear Materials, 329-333, 971-976. [More Information]
  • Hudson, T., Dudarev, S., Sutton, A. (2002). Absence of saturation of void growth in rate theory with anisotropic diffusion. Journal of Nuclear Materials, 307-311, 976-981.

Conferences

  • Badiola, K., Bartimote-Aufflick, K., Bridgeman, A., George, A., Hudson, T., Neto, C., Schmid, S. (2013). Using Interactive Lecture Demonstrations to Invigorate Chemistry Lectures. 19th Annual UniServe Science Conference: Australian Conference on Science and Mathematics Education (ACSME), The University of Sydney: Uniserve Science.
  • Hudson, T., Harrowell, P. (2009). Topological characterization of rearrangement events in supercooled water. Gordon Research Conference on the Physics and Chemistry of Liquids, N/A: N/A.

2013

  • Badiola, K., Bartimote-Aufflick, K., Bridgeman, A., George, A., Hudson, T., Neto, C., Schmid, S. (2013). Using Interactive Lecture Demonstrations to Invigorate Chemistry Lectures. 19th Annual UniServe Science Conference: Australian Conference on Science and Mathematics Education (ACSME), The University of Sydney: Uniserve Science.

2012

  • Elias, N., Hudson, T. (2012). Structural search for dense packing of concave and convex shapes in two dimensions. Journal of Physics: Conference Series, 402(1), 1-7. [More Information]

2011

  • Pedersen, U., Hudson, T., Harrowell, P. (2011). Crystallization of the Lewis-Wahnstrom ortho-terphenyl model. Journal of Chemical Physics, 134(11), 114501-1-114501-6. [More Information]
  • O'Toole, P., Hudson, T. (2011). New High-Density Packings of Similarly sized Binary Spheres. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 115(39), 19037-19040.
  • Hudson, T., Harrowell, P. (2011). Structural searches using isopointal sets as generators: densest packings for binary hard sphere mixtures. Journal of Physics: Condensed Matter, 23(19), 194103-1-194103-6. [More Information]

2010

  • Marshall, G., Hudson, T. (2010). Dense binary sphere packings. Beitraege zur Algebra und Geometrie (Contributions to Algebra and Geometry), 51(2), 337-344.
  • Hudson, T. (2010). Dense sphere packing in the NaZn(-13) structure type. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 114(33), 14013-14017.

2009

  • Hudson, T., Harrowell, P. (2009). Topological characterization of rearrangement events in supercooled water. Gordon Research Conference on the Physics and Chemistry of Liquids, N/A: N/A.

2008

  • Hudson, T., Harrowell, P. (2008). Dense Packings of Hard Spheres of Different Sizes Based on Filling Interstices in Uniform Three-Dimensional Tilings. The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces and Biophysical, 112(27), 8139-8143.
  • Kummerfeld, J., Hudson, T., Harrowell, P. (2008). The Densest Packing of AB Binary Hard-Sphere Homogeneous Compounds across all Size Ratios. The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces and Biophysical, 112(35), 10773-10776.

2007

  • Hudson, T., Harrowell, P. (2007). A systematic enumeration of local topological relaxation mechanisms in amorphous networks and their efficiency in network relaxation. Journal of Chemical Physics, 126(18), 184502-1-184502-5.

2006

  • Hudson, T., Nguyen-Manh, D., van Duin, A., Sutton, A. (2006). Grand canonical Monte Carlo simulations of intergranular glassy films in beta silicon nitride. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 422(1 to 2), 123-135.
  • Winkelman, G., Dwyer, C., Marsh, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Cockayne, D. (2006). The crystal/glass interface in doped Si3N4. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 422, 77-84.

2005

  • Hudson, T., Dudarev, S., Caturla, M., Sutton, A. (2005). Effects of elastic interactions on post-cascade radiation damage evolution in kinetic Monte Carlo simulations. Philosophical Magazine (London, 2003), 85(4-7), 661-675.
  • Mason, D., Hudson, T., Sutton, A. (2005). Fast recall of state-history in kinetic Monte Carlo simulations utilizing the Zobrist key. Computer Physics Communications, 165, 37-48. [More Information]
  • Winkelman, G., Dwyer, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Satet, R., Hoffmann, M., Cockayne, D. (2005). Three-dimensional organization of rare-earth atoms at grain boundaries in silicon nitride. Applied Physics Letters, 87, 061911-1-061911-3.

2004

  • Winkelman, G., Dwyer, C., Hudson, T., Nguyen-Manh, D., Doblinger, M., Satet, R., Hoffmann, M., Cockayne, D. (2004). Arrangement of rare-earth elements at prismatic grain boundaries in silicon nitride. Philosophical Magazine Letters, 84(12), 755-762.
  • Hudson, T., Dudarev, S., Sutton, A. (2004). Confinement of interstitial cluster diffusion by oversized solute atoms. Proceedings of the Royal Society of London. Mathematical, Physical and Engineering Sciences, 460(2049), 2457-2475.
  • Hudson, T., Dudarev, S., Sutton, A. (2004). Suppression of interstitial cluster diffusion by oversized solute atoms. Journal of Nuclear Materials, 329-333, 971-976. [More Information]

2002

  • Hudson, T., Dudarev, S., Sutton, A. (2002). Absence of saturation of void growth in rate theory with anisotropic diffusion. Journal of Nuclear Materials, 307-311, 976-981.

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