- Flannigan presents lecture at The Royal Society, London
- Flannigan featured in American Scientist magazine
- VandenBussche and Flannigan publish research in Nano Letters
- Flannigan co-editor of MRS Bulletin, "Ultrafast Imaging of Materials Dynamics"
- Flannigan wins Sigma Xi 2018 Young Investigator Award
- Flannigan named McKnight Presidential Fellow
- Flannigan selected for George Taylor Career Development Award
- Flannigan research featured in Journal of Materials Research special issue
- Groundbreaking CEMS research published in Nature Communications
- Flannigan research featured in Chemistry of Materials editorial for Up-and-Coming series
- Flannigan research in "Up-and-Coming Series" of Chemistry of Materials
- World's first FEI Tecnai Femto ultrafast electron microscope to be installed at University of Minnesota for Flannigan research
- Flannigan wins 2017 DOE Early Career Award
- CHATS with Professor David Flannigan
- Flannigan named 2015 Beckman Young Investigator
Our research program deals broadly with the experimental elucidation of non-equilibrium electronic and structural dynamics of inorganic, organic, and biological materials with atomic-scale spatial and femtosecond temporal resolutions. To achieve this, we use ultrafast four-dimensional electron microscopy (UEM). With UEM, we bring together the high spatial resolution of transmission electron microscopy with the ultrafast temporal resolution of short-pulsed lasers. We are able to directly visualize, in real-time, a wide variety of phenomena, including how crystal lattices respond to the excitation and relaxation of charge-carriers, the collective and coherent motions of lattices at the unit cell level, the real-space dynamics of nanoscale architectures and the effects of interfacial forces, and the effects of charge-transfer reactions on structure. Our group is highly interdisciplinary and collaborative, and our interests are broad, having foundations in materials science and engineering, chemistry, and physics. Our current interests are in three related but distinct areas: (1) energy transport and conversion in defect-laden materials, (2) structural dynamics, phase transitions, and energy transport properties of strongly-correlated materials, and (3) in situ TEM of laser-induced phase transformations and magnetic switching phenomena. The unifying goal of our work is to understand how atomic structure and dynamics lead to the emergence of bulk properties in materials, and how fundamental ultrafast processes of energy coupling occur on the nanoscale.
- Sigma Xi Young Investigator Award, 2018
- McKnight Presidential Fellowship, 2018
- George W. Taylor Career Development Award, 2018
- DOE Early Career Award, 2017
- NSF CAREER Award, 2017
- Beckman Young Investigator Award, 2015
- McKnight Land-Grant Assistant Professor, 2014
- 3M Nontenured Faculty Award, 2013
- Reisbick, S. A.; Zhang, Y.; Flannigan, D. J. Influence of Discrete Defects on Observed Acoustic-Phonon Dynamics in Layered Materials Probed with Ultrafast Electron Microscopy. J. Phys. Chem. A 2020, (Invited, Special issue: Time-Resolved Microscopy).
- Zhang, Y.; Flannigan, D. J. Observation of Anisotropic Strain-Wave Dynamics and Few-Layer Dephasing in MoS2 with Ultrafast Electron Microscopy. Nano Lett. 2019, 19, 8216.
- VandenBussche, E. J.; Flannigan, D. J. Reducing Radiation Damage in Soft Matter with Femtosecond Timed Single-Electron Packets. Nano Lett. 2019, 19, 6687.
- Flannigan, D. J. Watching Plasmonic Crystals Move to the Acoustic Beat. Matter 2019, 1, 308. (Invited Preview)
- VandenBussche, E. J.; Flannigan, D. J. Sources of Error in Debye-Waller-Effect Measurements Relevant to Studies of Photoinduced Structural Dynamics. Ultramicroscopy 2019, 196, 111.
- Flannigan, D. J.*; Lindenberg, A. M.* Atomic-Scale Imaging of Ultrafast Materials Dynamics. MRS Bull. 2018, 43, 485. (Invited Introductory Article, Cover article)
- Flannigan, D. J. Electrons Film Phonon Dynamics in Full. Physics 2018, 11, 53. (Invited Viewpoint)
- Suslick, K. S.; Eddingsaas, N. C.; Flannigan, D. J.; Hopkins, S. D.; Xu, H. The Chemical History of a Bubble. Acc. Chem. Res. 2018, 51, 2169. (Cover article)
- Liu, J.; Schliep, K. B.; He, S.-H.; Ma, B.; Jing, Y.; Flannigan, D. J.; Wang, J.-P. Iron Nanoparticles with Tunable Tetragonal Structure and Magnetic Properties. Phys. Rev. Mater. 2018, 2, 054415.
- Cremons, D. R.; Du, D. X.; Flannigan, D. J. Picosecond Phase-Velocity Dispersion of Hypersonic Phonons Imaged with Ultrafast Electron Microscopy. Phys. Rev. Mater. 2017, 1, 073801.