His research interest is the measurement and control of
transient phenomena at atomic time-scales and length-scales. The major
questions that motivate his research include:
1. How does a
system approach equilibrium after sudden pertubation?
intermediate states be manipulated in real time to alter outcomes?
3. What new
exotic behaviors can be identified under transient conditions?
He seeks to answer these questions by making molecular
movies – recording events with very high spatial resolution and a very fast
shutter speed. Tools used in his
research include ultra-fast lasers and synchrotron x-rays used either alone or
in combination. Visit his research site https://sites.google.com/site/elandahl/Home
W. Jo, E. C. Landahl, A. DiChiara, D. Walko, and S. Lee, "Measuring femtometer lattice displacements driven by free carrier diffusion in a polycrystalline semiconductor using time-resolved x-ray scattering", Applied Physics Letters 113, 032107. (2018)
G. Jackson Williams, S. Lee, D. Walko, M. Watson, W. Jo, D. Lee, E.C. Landahl, "Direct measurements of multi-photon induced nonlinear lattice dynamics in semiconductors via time-resolved x-ray scattering", Scientific Reports 6. Article #39506. (2016). http://www.nature.com/articles/srep39506.
S. Ross, M. Haji-Sheikh, A. Huntington, D. Kline, A. Lee, Y. Li, J. Rhee, M. Tarpley, D.A. Walko, G. Westberg, G. Williams, H. Zou, and E.C. Landahl, "X-ray characterization of a multichannel smart-pixel array detector", Journal of Synchrotron Radiation 23. 196-205. (2016).
W. Jo, S. Lee, I. Eom, C. Yu, and E.C. Landahl, "Demonstraton of a time-resolved x-ray scattering instrument utilizing the full-repetition rate of x-ray pulses at the Pohang Light Source", Review of Scientific Instruments. 87. 035107. (2016).
E. Dufresne, S. Narayanan, A. Sandy, D. Kline, Q. Zhang, S. Ross, and E.C. Landahl. "Pushing x-ray photon correlation spectroscopy beyond the continuous frame rate limit", Optics Express 24. 355-364. (2016).
S. Lee, G. Williams, M. Campana, D. Walko, and E.C. Landahl. "Picosecond x-ray strain rosette reveals direct laser excitation of coherent transverse acoustic phonons", Scientific Reports 6. 19140. (2016).
J.L. Klosowiak, P.J. Focia, S. Chakravarthy, E.C.
Landahl, D.M. Freymann, and S.E. Rice, “Structural coupling of the EF hand and
C-terminal GTPase domains in the mitochondrial protein miro”, EMBO reports 14,
M. Trigo, Y.M. Sheu, D.A. Arms, J. Chen, S. Ghimire, R.S.
Goldman, E.C. Landahl, R. Merlin, E. Peterson, M. Reason, and D.A. Reis,
“Unfolding acoustic phonons: Coherent
high-wavevector modes from a superlattice observed in bulk with time-resolved x-ray diffraction”, Physical Review Letters 101, 025505 (2008).
L. Young, D.A. Arms, E.M. Dufresne, R.W. Dunford, D.L.
Ederer, C. Hohr, E.P. Kanter, B. Krassig, E.C. Landahl, E.R. Peterson, J.
Rudati, R. Santra, and S.H. Southworth, “X-ray microprobe of orbital alignment
in strong-field ionized atoms”, Physical Review Letters 97, 083601 (2006).