Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Sae Hwan Chun"'
Autor:
Jang Hyeob Sohn, Gyeongbo Kang, Tae-Kyu Choi, Gyusang Lee, Changhoo Lee, Sae Hwan Chun, Jaeku Park, Dongbin Shin, Byoung-Ick Cho
Publikováno v:
Structural Dynamics, Vol 11, Iss 2, Pp 024304-024304-8 (2024)
This paper presents the implementation of high-energy-resolution off-resonant spectroscopy (HEROS) measurements using self-seeded x-ray free-electron laser (XFEL) pulses. This study systematically investigated XFEL conditions, including photon energy
Externí odkaz:
https://doaj.org/article/a33b9cd9a731434d8ddb33e35a9d4d62
Autor:
Tae-Kyu Choi, Jaeku Park, Gyujin Kim, Hoyoung Jang, Sang-Youn Park, Jang Hyeob Sohn, Byoung Ick Cho, Hyunjung Kim, Kyung Sook Kim, Inhyuk Nam, Sae Hwan Chun
Publikováno v:
Journal of Synchrotron Radiation, Vol 30, Iss 6, Pp 1038-1047 (2023)
Self-seeded hard X-ray pulses at PAL-XFEL were used to commission a resonant X-ray emission spectroscopy experiment with a von Hamos spectrometer. The self-seeded beam, generated through forward Bragg diffraction of the [202] peak in a 100 µm-thick
Externí odkaz:
https://doaj.org/article/256d336128564512b9737a78b49797d9
Autor:
Heemin Lee, Je Young Ahn, Sae Hwan Chun, Do Hyung Cho, Daeho Sung, Chulho Jung, Jaeyong Shin, Junha Hwang, Sung Soo Ha, Hoyoung Jang, Byeong-Gwan Cho, Sunam Kim, Jaeku Park, Daewoong Nam, Intae Eom, Ji Hoon Shim, Do Young Noh, Yungok Ihm, Changyong Song
Publikováno v:
IUCrJ, Vol 10, Iss 6, Pp 700-707 (2023)
Photoinduced nonequilibrium phase transitions have stimulated interest in the dynamic interactions between electrons and crystalline ions, which have long been overlooked within the Born–Oppenheimer approximation. Ultrafast melting before lattice t
Externí odkaz:
https://doaj.org/article/9db7190c112c4df7acb6c0f56563f179
Autor:
Ian K. Robinson, Jack P. Griffiths, Robert Koch, Tadesse A. Assefa, Ana F. Suzana, Yue Cao, Sungwon Kim, Dongjin Kim, Heemin Lee, Sunam Kim, Jae Hyuk Lee, Sang-Youn Park, Intae Eom, JaeHyun Park, Daewoong Nam, Sangsoo Kim, Sae Hwan Chun, Hyojung Hyun, Kyung-Sook Kim, Ming Lu, Changyong Song, Hyunjung Kim, Simon J. L. Billinge, Emil S. Bozin
Publikováno v:
IUCrJ, Vol 10, Iss 6, Pp 656-661 (2023)
X-ray structural science is undergoing a revolution driven by the emergence of X-ray Free-electron Laser (XFEL) facilities. The structures of crystalline solids can now be studied on the picosecond time scale relevant to phonons, atomic vibrations wh
Externí odkaz:
https://doaj.org/article/eed1c2ec336b4819bc406224b09f71e8
Autor:
Katrin Amann-Winkel, Kyung Hwan Kim, Nicolas Giovambattista, Marjorie Ladd-Parada, Alexander Späh, Fivos Perakis, Harshad Pathak, Cheolhee Yang, Tobias Eklund, Thomas J. Lane, Seonju You, Sangmin Jeong, Jae Hyuk Lee, Intae Eom, Minseok Kim, Jaeku Park, Sae Hwan Chun, Peter H. Poole, Anders Nilsson
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Obtaining experimental evidence of a liquid-liquid phase transition in supercooled water is challenging due to the rapid crystallization. Here the authors drive low-density amorphous ice to the conditions of liquid-liquid coexistence using ultrafast
Externí odkaz:
https://doaj.org/article/3fbbfa15add642f6940c73f05240df15
Autor:
Rachel J. Husband, R. Stewart McWilliams, Edward J. Pace, Amy L. Coleman, Huijeong Hwang, Jinhyuk Choi, Taehyun Kim, Gil Chan Hwang, Orianna B. Ball, Sae Hwan Chun, Daewoong Nam, Sangsoo Kim, Hyunchae Cynn, Vitali B. Prakapenka, Sang-Heon Shim, Sven Toleikis, Malcolm I. McMahon, Yongjae Lee, Hanns-Peter Liermann
Publikováno v:
Communications Materials, Vol 2, Iss 1, Pp 1-9 (2021)
The study of water at high pressure and temperature is essential for understanding planetary interiors but is hampered by the high reactivity of water at extreme conditions. Here, indirect X-ray laser heating of water in a diamond anvil cell is reali
Externí odkaz:
https://doaj.org/article/8bc110c30b7e417eb621865ff42801ef
Autor:
Hiroki Ueda, Hoyoung Jang, Sae Hwan Chun, Hyeong-Do Kim, Minseok Kim, Sang-Youn Park, Simone Finizio, Nazaret Ortiz Hernandez, Vladimir Ovuka, Matteo Savoini, Tsuyoshi Kimura, Yoshikazu Tanaka, Andrin Doll, Urs Staub
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023007 (2022)
Understanding ultrafast magnetization dynamics on the microscopic level is of strong current interest due to the potential for applications in information storage. In recent years, spin-lattice coupling has been recognized as essential for ultrafast
Externí odkaz:
https://doaj.org/article/39cefa8c1dbc4b81a8601e22d47dd8c3
Autor:
Intae Eom, Sae Hwan Chun, Jae Hyuk Lee, Daewoong Nam, Rory Ma, Jaehyun Park, Sehan Park, Sang Han Park, Haeryong Yang, Inhyuk Nam, Myung Hoon Cho, Chi Hyun Shim, Gyujin Kim, Chang-Ki Min, Hoon Heo, Heung-Sik Kang, Changbum Kim
Publikováno v:
Applied Sciences, Vol 12, Iss 3, p 1010 (2022)
The X-ray free-electron laser of the Pohang Accelerator Laboratory (PAL-XFEL) was opened to users in 2017. Since then, significant progress has been made in PAL-XFEL operation and beamline experiments. This includes increasing the FEL pulse energy, i
Externí odkaz:
https://doaj.org/article/bb611734d6be4c53bb565457febe3791
Autor:
Hyeon Jun Lee, Youngjun Ahn, Samuel D. Marks, Eric C. Landahl, Shihao Zhuang, M. Humed Yusuf, Matthew Dawber, Jun Young Lee, Tae Yeon Kim, Sanjith Unithrattil, Sae Hwan Chun, Sunam Kim, Intae Eom, Sang-Yeon Park, Kyung Sook Kim, Sooheyong Lee, Ji Young Jo, Jiamian Hu, Paul G. Evans
Publikováno v:
Physical Review X, Vol 11, Iss 3, p 031031 (2021)
Weakly coupled ferroelectric/dielectric superlattice thin-film heterostructures exhibit complex nanoscale polarization configurations that arise from a balance of competing electrostatic, elastic, and domain-wall contributions to the free energy. A k
Externí odkaz:
https://doaj.org/article/e576f4a1cf0a4697aca92bac2741c769
Autor:
Hyeon Jun Lee, Youngjun Ahn, Samuel D. Marks, Deepankar Sri Gyan, Eric C. Landahl, Jun Young Lee, Tae Yeon Kim, Sanjith Unithrattil, Sae Hwan Chun, Sunam Kim, Sang-Youn Park, Intae Eom, Carolina Adamo, Darrell G. Schlom, Haidan Wen, Sooheyong Lee, Ji Young Jo, Paul G. Evans
Publikováno v:
Nano Letters. 22:4294-4300
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::282ca10e12502fbd1e993251580cf3cf
https://doi.org/10.1021/acs.nanolett.1c04831
https://doi.org/10.1021/acs.nanolett.1c04831