"Off-the beaten tracks going beyond the current spatio-temporal limit" 

We are interested in

Position opening

Research project: "time-resolved XFEL single-pulse imaging"

We are currently seeking for graduate students who is interested in femtosecond time-resolved coherent diffraction imaging for direct observation of strongly driven phase transitions as a Ph. D. thesis project. The unique opportunity to use X-ray free electron laser for the femtosecond time-resolved imaging experiments is available!

Please contact Changyong SONG (cysong@postech.ac.kr), if interested in.

Please check out our introduction video! (▶YouTube)

물리지 않는 물리 영상 공모전 우수상 (▶YouTube)

Highlighted news

Heemin has successfully defended his Ph. D. thesis on ultrafast resonant X-ray scattering. Congratulations!


3D X-ray imaging achieving 10 nm scale 3D resolution to resolve 3D networked pore structures.

"Nanoscale three-dimensional network structure of a mesoporous particle unveiled via adaptive multidistance coherent X-ray tomography" by S. Y. Lee, D. H. Cho, & S. C. Song, et al.


Direct confirmation of ultrafast photoinduced melting in Ge with direct involvement of 4sp3 orbitals.

"Observing femtosecond orbital dynamics in ultrafast Ge melting with time-resolved resonant X-ray scattering" by H. Lee & J. Y. Ahn, et al.


Jaeyong has successfully defended his Ph. D. thesis on ultrafast XFEL single particle imaging. Congratulations!


Uncovering the ultrafast energy transfer process with direct visualization at sub-ps and atomic scale space-time domain. We have uncovered the ultrafast reaction kinetics by directly visualizing the energy transfer process from femtosecond photoexcited electrons to solid melting.

"Ultrafast energy transfer process in confined Au nanospheres revealed by femtosecond X-ray imaging and diffractions" by J. Shin, C. Jung, & Y. Ihm, et al.