- Idaho State University, Dept. of Physics, Pocatello Idaho, Oct 2023, "The search for large-angle rigid unit modes in 3D framework materials".
- University of Alabama, Dept. of Chemistry & Biochemistry, Tuscaloosa Alabama, Oct 2020, "The science of symmetry breaking in crystals".
- Hindu Banaras University, Depts. of Physics and Materials Science, Varanasi, India, Aug 2017, "Symmetry breaking in crystals", “Facilitating structure determination using the ISODISTORT software”.
- University of Utah, Materials Science Dept., Salt Lake City Utah, USA, Nov 2016, “Single-crystal diffuse scattering as a probe of nanoscale structure ”.
- Brigham Young University, Dept. of Physics & Astronomy, Provo Utah, USA, Sep 2016, “Symmetry breaking in crystals”.
- Institute of Metal Physics, Yekaterinburg, Russian Federation, Jun 2015, “Group representations as a general tool for the solution of distorted crystal structures”.
- St. Andrews University, Dept. of Chemistry, St. Andrews, UK, May 2015, “Nature's Basis for describing symmetry loss in crystals”.
- Durham University, Dept. of Physics, Durham, UK, Mar 2015, “Beyond Landau theory: group representations as a general tool for parameterizing an entire phase diagram”.
- Rutherford Appleton Laboratory, ISIS/Diamond, Didcot, UK, Feb 2015, “The symmetry-mode description of crystal distortions”.
- Oxford University, Dept. of Chemistry, Oxford, UK, Feb 2015, “The symmetry-mode description of crystal distortions”.
- University of Edinburgh, Dept. of Chemistry, Edinburgh, Scotland, UK, Jan 2015, “Symmetry-mode analysis of rigid-body rotations in crystals”.
- Argonne National Laboratory, Materials Science Division, Argonne, Illinois, Aug 2013, "Symmetry-mode analysis of solid-state superstructures".
- Utah Valley University, Dept. of Physics, Orem, Utah, Mar 2013, "Diffraction as a probe of atomic structure in functional materials".
- University of the Basque Country, Dept. of Physics, Bilbao, Spain, Oct 2012, “Applications of symmetry-mode analysis”.
- Idaho State University, Dept. of Physics, Pocatello, Idaho, Oct 2012, "Diffraction as a probe of local atomic structure in functional materials".
- University of Cambridge, Dept. of Materials Science & Metallurgy, Cambridge, UK, Apr 2012, “Symmetry-mode analysis of distorted structures”.
- University of Durham, Dept. of Chemistry, Durham, UK, Apr 2012, “Symmetry-mode analysis of magnetic and occupational ordering”.
- University of Utah, Materials Science Department, Salt Lake City, Utah, Jan 2012, "Single-crystal diffuse scattering as a probe of nanoscale structure".
- Max Planck Institute for Solid State Research, Stuttgart, Germany, Nov 2011, "Solving distorted structures using symmetry-modes: a global optimization approach".
- Brigham Young University, Dept. of Physics & Astronomy, Provo, Utah, Sep 2007, "Structure-property relationships in functional materials".
- Idaho State University, Dept. of Physics, Pocatello Idaho, Jan 2007, "Three-dimensional defect structures characterized via x-ray diffuse scattering".
- Canadian Neutron Beam Centre, Chalk River, Canada, May 2006, "Exploring structural phase transitions with the ISODISPLACE software".
- Hahn-Meitner Institute, Berlin, Germany, Nov 2004, "Spin-Precession Spectral Intensity Modulation: A Means of Incident Energy Resolution on an Inelastic Neutron Time-of-Flight Spectrometer", presented by Bradley Y. Underwood.
- Beijing Institute of Theoretical Physics, Beijing, China, May 2004, "Novel polaronic structures in the CMR manganites".
- Jilin University, College of Physics, Jilin, China, May 2004, "The role of polaronic structures in CMR manganites".
- Shanghai Institute of Ceramics, State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai, China, May 2004, "Single-crystal diffuse scattering study of correlated framework defects in zeolite mordenite".
- Utah Valley State College, Dept. of Physics, Orem, Utah, Jan 2004, "Discovering the link between material properties and atomic structure".
- UOP LLC, Des Plaines IL, Oct. 2003, "Defect structure determination via single-crystal x-ray and neutron diffuse scattering".
- Advanced Photon Source User Science Seminar, Argonne National Lab, Argonne, Illinois, June 2003, "Polaronic structure via diffuse x-ray and neutron scattering".
- University of Utah, Dept. of Physics, Salt Lake City, Utah, Feb 2003, "X-ray and neutron diffuse scattering from defect nanostructures".
- Hahn-Meitner Institute, Berlin, Germany, April 2002, "Polaronic orbital polarization and the CMR effect".
- University of Arkansas, Fayetteville, Arkansas, Feb 2002, "Polaronic structures in the CMR manganites".
- Miami University Physics Dept., Miami, Ohio, Feb 2002, "Polaronic structures in the CMR manganites".
- University of Wisconsin-Madison Dept. of Materials Science and Engineering, Madison, Wisconsin, Feb 2002, "Polaronic structures in the CMR manganites".
- NIST Center for Neutron Research., Gaithersburg MD, Aug 2001, "The use of spin-precession spectral intensity modulation for incident-energy resolution on a neutron TOF spectrometer".
- Brigham Young University Physics Dept., Provo, Utah, Oct 2000, "Short-range polaron correlations in CMR manganites observed via x-ray diffuse scattering".
- Argonne National Laboratory Intense Pulsed Neutron Source, Oct 2000, "Nanoscale polaron correlations and diffuse scattering".
- Argonne National Laboratory, Materials Science Div., Argonne, Illinois, May 1999, "Charge and magnetic ordering in the n=2 Ruddlesden-Popper manganate (SrO)(La0.5Sr0.5MnO3)2".
- Los Alamos National Laboratory, Chemical Science and Technology Div., Los Alamos, New Mexico, Jan 1999, "Zeolite Structural Characterization by Powder Diffraction and Computer Simulation".
- Molecular Simulations Inc., Mountain View, California, Sep 1998, "Solving novel crystal structures using simulated annealing".