About Dr Anna Ceguerra

My main research interests are in developing computational techniques for analysing microscopy data, that come from instruments such as atom probe microscopes and transmission electron microscopes. I apply these techniques to analyse the chemistry and structure of complex materials at the nanometre length scale. I am currently studying materials that are complex at the atomic scale, such as solid solutions, quasicrystals, and amorphous materials. I work closely with Prof. Simon Ringer and Prof. Julie Cairney, two world-leading materials engineers and atom probe scientists.

My research expertise is in materials engineering, in particular the characterisation of the chemistry and structure of materials at the nanometer length scale and atomic-scale. I apply computer programming expertise to develop novel quantitative analyses to characterise these structures, so that we may infer structure-property relationships about the materials we are studying.

I am the Atom Probe Scientist working at the Australian Centre for Microscopy & Microanalysis, which is the University of Sydney node and headquarters of the Australian Microscopy & Microanalysis research facility. Through the ACMM and the AMMRF, I have access to world-class microscopy instruments, such as optical microscopes, scanning electron microscopes, transmission electron microscopes, micro CT, SIMS, and atom probe microscopes. Over ten years I have supported the analysis of a range of materials, including: semiconductors; superconductors; photovoltaics; nanowires; alloys of aluminium, titanium, or magnesium; and steels. I have published over 20 peer-reviewed papers in internationally recognised materials science and engineering journals, such as Nature Communications, Ultramicroscopy, Acta Crystallographica Section A, Physical Review B, Acta Materialia. This includes an invited review article in Current Opinion in Solid State and Materials Science. I have given invited lectures, presentations and workshops both nationally and internationally. Recently I was invited to present the introductory atom probe workshop at the Australian Conference on Microscopy and Microanalysis 2016. I have both national and international collaborators with researchers at universities (e.g. Deakin, Oxford UK, NJUST China), research institutes (e.g. CSIRO, Max Planck Institute for Steels Research, Germany) and in industry.       

I am interested in excellence in research training. Since 2012 I have supervised at least 50 student research projects, at both undergraduate and postgraduate level. As a result of this experience, I led the development of an online tool, whenew.sydney.edu.au, which aids in research development for students at thesis level and above.

Selected publications

1.      Gao, T., A. Ceguerra, A. Breen, X. Liu, Y. Wu, and S. Ringer, Precipitation behaviors of cubic and tetragonal Zr–rich phase in Al–(Si–)Zr alloys. Journal of Alloys and Compounds, 2016. 674: p. 125-130.
2.      Araullo-Peters, V., A. Breen, A.V. Ceguerra, B. Gault, S.P. Ringer, and J.M. Cairney, A new systematic framework for crystallographic analysis of atom probe data. Ultramicroscopy, 2015. 154(July): p. 7-14.
3.      Marceau, R.K.W., A.V. Ceguerra, A.J. Breen, D. Raabe, and S.P. Ringer, Quantitative chemical-structure evaluation using atom probe tomography: Short-range order analysis of Fe–Al. Ultramicroscopy, 2015. 157: p. 12-20.
4.      Moody, M.P., A.V. Ceguerra, A.J. Breen, X.Y. Cui, B. Gault, L.T. Stephenson, R.K.W. Marceau, R.C. Powles, and S.P. Ringer, Atomically resolved tomography to directly inform simulations for structure-property relationships. Nature Communications, 2014. 5: p. 5501.
5.      Stephenson, L.T., A.V. Ceguerra, T. Li, T. Rojhirunsakool, S. Nag, R. Banerjee, J.M. Cairney, and S.P. Ringer, Point-by-point compositional analysis for atom probe tomography. MethodsX, 2014. 1(0): p. 12-18.
6.      Ceguerra, A.V., A.J. Breen, L.T. Stephenson, P.J. Felfer, V.J. Araullo-Peters, P.V. Liddicoat, X. Cui, L. Yao, D. Haley, M.P. Moody, B. Gault, J.M. Cairney, and S.P. Ringer, The rise of computational techniques in atom probe microscopy. Current Opinion in Solid State and Materials Science, 2013. 17(5): p. 224-235.
7.      Ceguerra, A.V., M.P. Moody, R.C. Powles, T.C. Petersen, R.K.W. Marceau, and S.P. Ringer, Short-range order in multicomponent materials. Acta Crystallographica Section A, 2012. 68(5): p. 547-560.
8.      Li, L., Y. Guo, X.Y. Cui, R. Zheng, K. Ohtani, C. Kong, A.V. Ceguerra, M.P. Moody, J.D. Ye, H.H. Tan, C. Jagadish, H. Liu, C. Stampfl, H. Ohno, S.P. Ringer, and F. Matsukura, Magnetism of Co-doped ZnO epitaxially grown on a ZnO substrate. Physical Review B, 2012. 85(17).
9.      Ceguerra, A.V., M.P. Moody, L.T. Stephenson, R.K.W. Marceau, and S.P. Ringer, A three-dimensional Markov field approach for the analysis of atomic clustering in atom probe data. Philosophical Magazine, 2010. 90(12): p. 1657-1683.
10.   Ceguerra, A.V., R.C. Powles, M.P. Moody, and S.P. Ringer, Quantitative description of atomic architecture in solid solutions: A generalized theory for multicomponent short-range order. Physical Review B, 2010. 82(13): p. 132201.