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Royal Society Tata University Research Fellow

MEng/BEng (MatSci&Eng) University of Leeds 
PHD University of Cambridge

High-resolution and 3D electron microcopy, compressed sensing and catalysis

As a member of the Electron Microscopy Group I have research interests in both high-resolution and three-dimensional transmission electron microscopy. Applied to electron tomography in particular, I have sought out novel methodological approaches using so-called 'compressed sensing'; a sampling and recovery strategy capable of reconstructing signals from far fewer measurements than traditional approaches suggest are necessary. My research also has a strong focus on the elucidation of nanoparticle and atomic cluster morphology, often in the context of heterogeneous catalysis.

Composite colour image showing five surface plasmon modes (labelled α - ε) on a silver nanocube (100nm across) reconstructed using 4D spectrum-tomography (see O. Nicoletti et al., Nature502 80-84 (2013).)
  • O. Nicoletti, F. de la Peña, R.K. Leary, D.J. Holland, C. Ducati & P.A. Midgley, "Three-dimensional imaging of localized surface plasmon resonances of metal nanoparticles", Nature 502 80–84 (2013) .
  • R. Leary, Z. Saghi, P.A. Midgley & D.J. Holland, "Compressed sensing electron tomography",Ultramicroscopy 13170-91 (2013) .
  • R. Leary, F. de la Peña, J.S. Barnard, Y. Luo, M. Armbrüster, J.M. Thomas & P.A. Midgley, "Revealing the atomic structure of intermetallic GaPd2 nanocatalysts by using aberration- corrected scanning transmission electron microscopy",ChemCatChem 5(9) 2599-2609 (2013).
  • R. Leary, P.A. Midgley & J.M. Thomas, "Recent advances in the application of electron tomography to materials chemistry", Accounts of Chemical Research 45(10) 1782-1791 (2012) .
  • R. Leary, & A. Westwood, "Carbonaceous nanomaterials for the enhancement of TiO2photocatalysis", Carbon 49(3) 741-772 (2011).