Ken Judai

Nihon Univeristy, College of Humanities and Sciences, Department of Physics
Ph. D (Science)


Research Interest

Brownian motion is a phenomenon caused by fluctuations in liquids. It is also Brownian motion that proves the existence of atoms and molecules, and we can observe the results of molecular collisions on colloidal particles, which can be observed with optical microscopy. Brownian motion can be measured in terms of thermal fluctuations of collisions from molecules and the viscosity rate between molecules. Viscosity has the feature that intermolecular interactions can be extracted as a macroscopic physical quantity, and intermolecular interactions are studied from Brownian motion and viscosity. In particular, I am interested in mixtures of water and alcohol.

Career Summary

2016 Nihon University, College of Humanities and Sciences, Department of Physics, Professor
2011 Nihon University, College of Humanities and Sciences, Department of Integrated Science in Physics and Biology (Tokyo, Japan), Associate Professor
2004 Institute for Molecular Science (Okazaki, Japan), Research Associate
2003 Universität Ulm, Japan Society for the Promotion of Science (JSPS) Overseas Research Fellowship
2002 Universität Ulm (Germany), Alexander von Humboldt Fellowship
1999 Keio University, Department of Chemistry (Yokohama, Japan), Research Associate

Selected Papers

K. Furukawa, K. Judai, “Brownian motion probe for water-ethanol inhomogeneous mixtures” J. Chem. Phys. 147, 244502 (2017); DOI: 10.1063/1.5007813

K. Judai, J. Nishijo, N. Nishi, “Self-Assembly of Copper Acetylide Molecules into Extremely Thin Nanowires and Nanocables” Adv. Mater. 18, 2842-2846 (2006); DOI: 10.1002/adma.200600771

K. Judai, S. Abbet, A. S. Wörz, U. Heiz, “Low-Temperature Cluster Catalysis” J. Am. Chem. Soc. 126, 2732-2737 (2004); DOI: 10.1021/ja039037k

K. Judai, K. Sera, S. Amatsutsumi, K. Yagi, T. Yasuike, S. Yabushita, A. Nakajima, K. Kaya, “A soft-landing experiment on organometallic cluster ions: infrared spectroscopy of V(benzene)2 in Ar matrix” Chem. Phys. Lett. 334, 277-284 (2001)

All Papers