K
Kyung Hwan Kim
Researcher at Pohang University of Science and Technology
Publications - 117
Citations - 2966
Kyung Hwan Kim is an academic researcher from Pohang University of Science and Technology. The author has contributed to research in topics: Scattering & Thin film. The author has an hindex of 25, co-authored 104 publications receiving 2359 citations. Previous affiliations of Kyung Hwan Kim include Institut Pasteur Korea & European Synchrotron Radiation Facility.
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Journal ArticleDOI
Maxima in the thermodynamic response and correlation functions of deeply supercooled water
Kyung Hwan Kim,Alexander Späh,Harshad Pathak,Fivos Perakis,Daniel Mariedahl,Katrin Amann-Winkel,Jonas A. Sellberg,Jae Hyuk Lee,Sang Soo Kim,Jaehyun Park,Ki Hyun Nam,Tetsuo Katayama,Anders Nilsson +12 more
TL;DR: Maxima in the isothermal compressibility and correlation length point to the existence of a Widom line, defined as the locus of maximum correlation length emanating from a critical point at positive pressures in the deeply supercooled regime, and the difference in the maximum value of the is thermal compressibility between the two isotopes shows the importance of nuclear quantum effects.
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A Three-Dimensional Polyrotaxane Network This paper is dedicated to the memory of Professor Chung Hoe Koo, who first introduced X-ray crystallography to Korea. We gratefully acknowledge the Korean Ministry of Science and Technology (Creative Research Initiative Program) for support of this work and the Korean Ministry of Education (Brain Korea 21 program) for graduate studentships to E.L. and J.H.
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Direct observation of bond formation in solution with femtosecond X-ray scattering
Kyung Hwan Kim,Jong Goo Kim,Shunsuke Nozawa,Tokushi Sato,Key Young Oang,Tae Wu Kim,Hosung Ki,Junbeom Jo,Sungjun Park,Changyong Song,Takahiro Sato,Kanade Ogawa,Tadashi Togashi,Kensuke Tono,Makina Yabashi,Tetsuya Ishikawa,Joonghan Kim,Ryong Ryoo,Jeongho Kim,Hyotcherl Ihee,Shin-ichi Adachi +20 more
TL;DR: This work demonstrates that it is possible to track in detail and in real time the structural changes that occur during a chemical reaction in solution using X-ray free-electron lasers and advanced analysis of time-resolved solution scattering data.
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Femtosecond X-ray Absorption Spectroscopy at a Hard X-ray Free Electron Laser: Application to Spin Crossover Dynamics
Henrik T. Lemke,Christian Bressler,Lin X. Chen,David Fritz,Kelly J. Gaffney,Andreas Galler,Wojciech Gawelda,Kristoffer Haldrup,Robert W. Hartsock,Hyotcherl Ihee,Jeongho Kim,Kyung Hwan Kim,Jae Hyuk Lee,Martin Nielsen,Andrew B. Stickrath,Weiya Zhang,Diling Zhu,Marco Cammarata +17 more
TL;DR: In this paper, the authors reported femtosecond time-resolved X-ray absorption near-edge spectroscopy (XANES) measurements of a spin-crossover system, iron(II) tris(2,2′-bipyridine) in water.
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Experimental observation of the liquid-liquid transition in bulk supercooled water under pressure
Kyung Hwan Kim,Kyung Hwan Kim,Katrin Amann-Winkel,Nicolas Giovambattista,Alexander Späh,Fivos Perakis,Harshad Pathak,Marjorie Ladd Parada,Cheolhee Yang,Daniel Mariedahl,Tobias Eklund,Thomas J. Lane,Seonju You,Sangmin Jeong,Matthew Weston,Jae Hyuk Lee,Intae Eom,Minseok Kim,Jaeku Park,Sae Hwan Chun,Peter H. Poole,Anders Nilsson +21 more
TL;DR: The dynamics of the two processes being separated by more than one order of magnitude provides support for a liquid-liquid transition in bulk supercooled water.