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Christian Dwyer

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Associate Professor
Faculty, Tempe Campus, Mailcode 1504
Assoc Professor
Faculty, TEMPE Campus, Mailcode 1504
Assoc Professor
Faculty, TEMPE Campus, Mailcode 1504
Biography

Associate Professor Christian Dwyer is an electron microscopist with backgrounds in scattering and condensed-matter physics. He obtained his PhD at the University of Cambridge in 2004, and worked in academic/research institutes in England, Australia and Germany before coming to ASU in August 2015. In his research, Prof Dwyer uses electron microscopes to understand how materials work at the nanometer and atomic lengths scales. He studies materials such as emerging 2D electronic materials, as well as more traditional materials like alloys and nanoparticles which are important for manufacturing and energy generation. A large part of Dwyer's research also focuses on developing new ways of using electron microscopes to reveal previously-inaccessible information. Dwyer's research is intrinsically multidisciplinary, involving methods from theoretical physics, experimental physics, materials science, and applied mathematics. 

Education
  • PhD (Natural Sciences), Department of Materials Science and Metallurgy, University of Cambridge, 2004.

  • BAppSci with 1st Class Honours in Applied Physics, RMIT University, 2000. 

Publications

Book Chapters (2013-2015)

  • C. Dwyer. Atomic-resolution core-level spectroscopy in the scanning transmission electron microscope. Advances in Imaging and Electron Physics (2013).

 

Refereed Journal Articles (2013-2015)

  • A.H. Tavabi, V. Migunov, C. Dwyer, R.E. Dunin-Borkowski, G. Pozzi. Tunable caustic phenomena in electron wavefields. Ultramicroscopy (2015).
  • C. Dwyer. The role of symmetry in the theory of inelastic high-energy electron scattering and its application to atomic-resolution core-loss imaging. Ultramicroscopy (2015).
  • C. Dwyer, C.B. Boothroyd, S.L.Y. Chang, R.E. Dunin-Borkowski. Three wave electron vortex lattices for measuring nanofields. Ultramicroscopy (2015).
  • H. Katz-Boon, M. Walsh, C. Dwyer, P. Mulvaney, A. Funston, J. Etheridge. Stability of crystal facets in gold nanorods. Nano Letters (2015).
  • M. Heidelmann, M. Heggen, C. Dwyer, M. Feuerbacher. A comprehensive model of metadislocation movement in Al13Co4. Scripta Materialia (2015).
  • S.L.Y. Chang, C. Dwyer, C.B. Boothroyd, R.E. Dunin-Borkowski. Optimising electron holography in the presence of partial coherence and instrument instabilities. Ultramicroscopy (2015).
  • Y. Zhu, R.L. Withers, L. Bourgeois, C. Dwyer, J. Etheridge. Direct mapping of Li-enabled octahedral tilt ordering and associated strain in nanostructured perovskites. Nature Materials (2015).
  • Y.M. Zhu, M. Weyland, N.V. Medhekar, C. Dwyer, C.L. Mendis, K. Kono, J.F. Nie. On the prismatic precipitate planes in Mg-Ca-In alloys. Scripta Materialia (2015).
  • C. Dwyer. Localization of high-energy electron scattering from atomic vibrations. Phys. Rev. B (2014).
  • C.J. Rossouw, C. Dwyer, H. Katz-Boon, J. Etheridge. Channelling contrast analysis of lattice images: Conditions for probe-insensitive STEM. Ultramicroscopy (2014).
  • H. Tan, Y. Zhu, C. Dwyer, H.L. Xin. Energy-loss- and thickness-dependent contrast in atomic-scale electron energy-loss spectroscopy. Phys. Rev. B (2014).
  • H.L. Xin, C. Dwyer, D.A. Muller. Is there a Stobbs factor in atomic-resolution STEM-EELS mapping?. Ultramicroscopy (2014).
  • J.M. Rosalie, C. Dwyer, L. Bourgeois. On chemical order and interfacial segregation in gamma-prime (AlAg2) precipitates. Acta Materialia (2014).
  • S.L.Y. Chang, A. Singh, R.K. Hocking, C. Dwyer, L. Spiccia. Nanoscale structural disorder in manganese oxide particles embedded in Nafion. Journal of Materials Chemistry A (2014).
  • Y. Zhu, C. Dwyer. Quantitative position-averaged K-, L-, and M-shell core-loss scattering in STEM. Microscopy and Microanalysis (2014).
  • H. Katz-Boon, C.J. Rossouw, C. Dwyer, J. Etheridge. Rapid measurement of nanoparticle thickness profiles. Ultramicroscopy (2013).
  • H. Kauko, C.L. Zheng, Y. Zhu, S. Glanvill, C. Dwyer, A.M. Munshi, B.O. Fimland, A.T.J. van Helvoort, J. Etheridge. Compositional analysis of GaAs/AlGaAs heterostructures using quantitative HAADF STEM. Appl. Phys. Lett (2013).
  • H.L. Xin, C. Dwyer, D.A. Muller, H. Zheng, P. Ercius. Scanning confocal electron energy-loss microscopy using valence-loss signals. Microsc. Microanal (2013).
  • L. Bourgeois, N.V. Medhekar, A.E. Smith, M. Weyland, J.-F. Nie, C. Dwyer. Efficient atomic-scale kinetics through a complex heterophase interface. Phys. Rev. Lett (2013).
  • R.L. Withers, L. Bourgeois, A. Snashall, Y. Liu, L. Noren, C. Dwyer, J. Etheridge. Chessboard/diamond nano-structures and the A-site deficient, Li1/2-3x Nd1/2+xTiO3, defect perovskite solid solution. Chem. Mat (2013).
  • Y. Zhu, A. Soukiassian, D.G. Schlom, D.A. Muller, C. Dwyer. Towards artifact-free atomic-resolution elemental mapping with electron energy-loss spectroscopy. Appl. Phys. Lett (2013).
Fall 2017
Course NumberCourse Title
PHY 252Physics III
PHY 495Project Research
PHY 499Individualized Instruction
PHY 792Research
Summer 2017
Course NumberCourse Title
PHY 792Research
Spring 2017
Course NumberCourse Title
PHY 252Physics III
PHY 495Project Research
PHY 499Individualized Instruction
PHY 792Research
Fall 2016
Course NumberCourse Title
PHY 252Physics III
PHY 495Project Research
PHY 499Individualized Instruction
PHY 792Research
Summer 2016
Course NumberCourse Title
PHY 792Research
Spring 2016
Course NumberCourse Title
PHY 252Physics III
Presentations

​Invited Lectures, Seminars and Colloquia (2013-2015)

  • C. Dwyer. The physics behind the electron microscope: How we use matter waves to explore the nanoworld. ASU Physics Colloquium (Sep 2015).
  • C. Dwyer. Quantitative Aberration-Corrected Electron Microscopy - the State of the Art. Imperial College Department of Materials Colloquium, London, United Kingdom (May 2015).
  • C. Dwyer. The role of symmetry in the theory of inelastic electron scattering. Frontiers of Aberration Corrected Electron Microscopy, Vaals, Belgium (Apr 2015).
  • C. Dwyer. Spatial resolution in vibrational spectroscopy. SuperSTEM Microscope Inauguration, Daresbury, United Kingdom (Feb 2015).
  • C. Dwyer. Quantitative ADF-STEM and STEM-EELS at the atomic level. Congress of the International Union of Crystallography, Montreal, Canada (Aug 2014).
  • C. Dwyer. Structure determination using STEM imaging. Electron Crystallography Workshop, Cambridge, United Kingdom (Jul 2014).
  • C. Dwyer. Quantitative imaging. SuperSTEM Summer School, Daresbury, United Kingdom (Jul 2014).
  • C. Dwyer. Quantitative STEM and DFT for analysis of nanomaterials. International Conference on Electron Microscopy, New Delhi, India (Jul 2014).
  • C. Dwyer. Simulating core-loss scattering in the TEM/STEM. Workshop on Imaging and Modeling in Electron Microscopy, Banff, Canada (May 2014).
  • C. Dwyer. Quantitative aberration-corrected STEM. Workshop on Imaging and Spectroscopy in Advanced TEM Nasik, India (Jan 2014).
  • C. Dwyer. Symmetry and entanglement in inelastic electron scattering. Frontiers of Electron Microscopy in Materials Science, Lorne, Australia (Sep 2013).
Service
  • Center for High-Resolution Electron Microscopy Steering Committee, Committe Member (2015 - Present)
  • Physics Colloquium Committee, Committe Member (2015 - Present)