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Dr Patrick Trimby

Microscopist, SEM specialist

Ph: + 61 2 9351 7561
Fax: + 61 2 9351 7682

BA (Hons), 1994, University of Oxford
PhD, 1998, University of Liverpool

Patrick’s original research background is in the field of geology: his PhD focused on developing the application of electron backscatter diffraction (EBSD) to the analysis of microsctructures in deformed rocks, and this theme continued during a postdoctoral research position at the University of Utrecht in the Netherlands.
In 2000 Patrick moved to commercial electron microscopy, working for 5 years as the EBSD applications manager at HKL Technology in Denmark and from 2005-2009 as an applications specialist for Oxford Instruments Nordiska. During this time he was responsible for customer training and support for a number of SEM techniques, including EDS, WDS, EBSD and various heating and tensile stages. He moved to start his new role at the ACMM at the beginning of 2010.

Research Project
As the SEM Section Manager, Patrick is responsible for ensuring that the Centre’s SEMs and FIB-SEMs are operating effectively, and that users receive the necessary support and training. Patrick also aims to broaden the applications of a number of the advanced analytical SEM techniques available in the Centre, including mineral liberation analyses, EBSD, EDS and novel 3D techniques.

Other research interests

  • The application of SEM based microanalysis techniques to a wide range of materials. In particular the application of EBSD and EDS to rock and metal samples.
  • General application of SEM imaging techniques across the physical and biological sciences.
  • Development of automated 3D analytical techniques using the FIB-SEM.

Selected publications

  1. Prior, D.J., Trimby, P.W., Weber, U.D. and Dingley, D.J. (1996). Orientation contrast imaging of microstructures in rocks using forescatter detectors in the scanning electron microscope. Mineralogical Magazine, 60, p 859-869.
  2. Trimby, P.W., Prior, D.J. and Wheeler, J. (1998). Grain boundary hierarchy development in a quartz mylonite. Journal of Structural Geology, 20, 917-935.
  3. Prior, D.J., Boyle, A.P., Brenker, F., Cheadle, M.C., Day, A., Lopez, G., Potts, G.J., Reddy, S.M., Spiess, R., Trimby, P.W., Wheeler, J., & Zetterström, L., (1999). The application of Electron Backscatter Diffraction and Orientation Contrast Imaging in the SEM to textural problems in rocks. American Mineralogist, 84, 1741-1759.
  4. Trimby, P.W., Drury, M.R. and Spiers, C.J. (2000). Recognising the crystallographic signature of recrystallisation processes in deformed rocks: a study of experimentally deformed rocksalt. Journal of Structural Geology, 22, 1609-1620.
  5. Reddy, S.M., Timms, N.E., Trimby, P.W, Kinny, P.D., Buchan, C. and Blake, K. (2006). Crystal-plastic deformation of zircon: A defect in the assumption of chemical robustness. Geology, 34; 257-260.
  6. Trager Cowan, C., Sweeney, F, Trimby, P.W., Day, A.P., Gholinia, A., Schmidt, N-H., Parbrook, P.J., Wilkinson, A.J. and Watson, I.M. (2007). Electron backscatter diffraction and electron channeling contrast imaging of tilt and dislocations in nitride thin films. Phys. Rev. B 75, 085301.
  7. Wheeler, J., Mariani, E., Piazolo, S, Prior, D.J, Trimby, P.W and Drury, M. R. (2009). The weighted Burgers vector – a new quantity for constraining dislocation densities and types using electron backscattered diffraction on 2D sections through crystalline materials. Journal of Microscopy, 233, 482-494.

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