ASSOCIATE PROFESSOR, DIRECTOR OF UNDERGRADUATE STUDIES FOR MATERIALS SCIENCE AND ENGINEERING
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.; Chen, J.; Engen, P. E.; Flannigan, D. J. Coherent Phonon Disruption and Lock-In During a Photoinduced Charge-Density-Wave Phase Transition. ChemRxiv 2021, 10.26434/chemrxiv.14357342.v1
- Du, D. X.; Reisbick, S. A.; Flannigan, D. J. UEMtomaton: A Source-Available Platform to Aid in Start-up of Ultrafast Electron Microscopy Labs. Ultramicroscopy 2021, 223, 113235.
- VandenBussche, E. J.; Flannigan, D. J. High-Resolution Analogue of Time-Domain Phonon Spectroscopy in the Transmission Electron Microscope. Philos. Trans. R. Soc. A 2020, 378, 20190598. (Invited, Themed Issue: Dynamic In-Situ Microscopy Relating Structure and Function)
- VandenBussche, E. J.; Clark, C. P.; Holmes, R. J.; Flannigan, D. J. Mitigating Damage to Hybrid Perovskites Using Pulsed-Beam TEM. ACS Omega 2020, 5, 31867.
- Du, D. X.; Flannigan, D. J. Imaging Phonon Dynamics with Ultrafast Electron Microscopy: Kinematical and Dynamical Simulations Struct. Dyn. 2020, 7, 024103. (Invited, Featured Article, AIP Scilight)
- 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, 124, 1877. (Invited, Special virtual issue: Time-Resolved Microscopy) (Cover article)
- 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.
Office: 401 Amundson Hall
- B.S., Chemistry, University of Minnesota, 2001
- Ph.D., Chemistry, University of Illinois at Urbana-Champaign, 2006
- Postdoctoral Scholar, Chemistry, California Institute of Technology, 2007-2010
- Senior Postdoctoral Scholar, Chemistry, California Institute of Technology, 2011-2012