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Keiko Nishikawa

Keiko Nishikawa

D-Index & Metrics

Chemistry

D-Index
56
Citations
9046
World Ranking
11869
National Ranking
881

Overview

Keiko Nishikawa is a researcher affiliated with Chiba University in Japan, specializing in materials science and chemical engineering. Their work primarily spans the subfields of materials chemistry, catalysis, and biomedical engineering, with a notable focus on the properties and applications of ionic liquids as well as material dynamics and phase equilibria.

Their research output includes studies in several specialized topics such as ionic liquids properties and applications, material dynamics and properties, phase equilibria and thermodynamics, thermodynamic properties of mixtures, molecular spectroscopy and chirality, advanced battery materials and technologies, and solid-state spectroscopy and crystallography.

Frequent publication venues for Nishikawa's work include:

  • Bulletin of the Chemical Society of Japan
  • Physical Chemistry Chemical Physics
  • J - Multidisciplinary Scientific Journal
  • Chemical Physics Letters
  • Japanese Journal of Applied Physics

The scientist has collaborated regularly with colleagues such as Kozo Fujii, Takeshi Morita, Masahiro Yoshizawa-Fujita, Taisei Yamada, and Kazuhiko Matsumoto.

Their recent publications illustrate a range of topics across experimental and theoretical studies, including:

  • "Structure and Properties of Supercritical Water: Experimental and Theoretical Characterizations," 2021, published in J - Multidisciplinary Scientific Journal
  • "Two different regimes in alcohol-induced coil-helix transition: effects of 2,2,2-trifluoroethanol on proteins being either independent of or enhanced by solvent structural fluctuations," 2021, published in Physical Chemistry Chemical Physics
  • "The Solution Chemistry of Mixing States Probed via Fluctuations: a Direct Description of Inhomogeneity in Mixing," 2021, published in Bulletin of the Chemical Society of Japan
  • "Free ionic rotators on crystal lattice points - Structures of ionic plastic crystals," 2022, published in Chemical Physics Letters
  • "Heterogeneous dynamics of diffusive motion in organic ionic plastic crystal studied using spin-spin relaxation time: N,N-diethylpyrrolidinium bis(fluorosulfonyl)amide," 2024, published in Bulletin of the Chemical Society of Japan

Keiko Nishikawa's multidisciplinary research integrates approaches from engineering and chemical sciences to explore the behavior of complex materials, addressing both fundamental properties and advanced applications related to ionic liquids and thermodynamic systems.

Best Publications

  • Structure of an ionic liquid, 1-n-butyl-3-methylimidazolium iodide, studied by wide-angle X-ray scattering and Raman spectroscopy

    Hideki Katayanagi;Satoshi Hayashi;Hiro-o Hamaguchi;Keiko Nishikawa

  • An Ordered Water Molecular Assembly Structure in a Slit-Shaped Carbon Nanospace

    T. Iiyama;K. Nishikawa;T. Otowa;K. Kaneko

  • Mixing Schemes in Ionic Liquid−H2O Systems: A Thermodynamic Study

    Hideki Katayanagi;Keiko Nishikawa;Hideki Shimozaki;Kumiko Miki

  • Temperature dependence of the concentration fluctuation, the Kirkwood-Buff parameters, and the correlation length of tert-butyl alcohol and water mixtures studied by small-angle x-ray scattering

    Keiko Nishikawa;Hisashi Hayashi;Takao Iijima

  • Study of the structure of a water molecular assembly in a hydrophobic nanospace at low temperature with in situ X-ray diffraction

    T. Iiyama;K. Nishikawa;T. Suzuki;K. Kaneko

  • Small-angle x-ray scattering study of fluctuations in 1-propanol-water and 2-propanol-water systems

    Hisashi. Hayashi;Keiko. Nishikawa;Takao. Iijima

  • Melting and freezing behaviors of prototype ionic liquids, 1-butyl-3-methylimidazolium bromide and its chloride, studied by using a nano-Watt differential scanning calorimeter.

    Keiko Nishikawa;Shaolan Wang;Hideki Katayanagi;Satoshi Hayashi

  • Small-angle x-ray scattering study of fluctuations in ethanol and water mixtures

    Keiko Nishikawa;Takao Iijima

  • CORRELATION LENGTHS AND DENSITY FLUCTUATIONS IN SUPERCRITICAL STATES OF CARBON DIOXIDE

    Keiko Nishikawa;Ibuki Tanaka

  • Inhomogeneity of molecular distribution in supercritical fluids

    Keiko Nishikawa;Takeshi Morita

  • Fluctuations in the particle number and concentration and the Kirkwood-Buff parameters of tert-butyl alcohol and water mixtures studied by small-angle x-ray scattering

    Keiko. Nishikawa;Yasuto. Kodera;Takao. Iijima

  • Small-Angle X-ray Scattering Study of Supercritical Carbon Dioxide

    Keiko Nishikawa;Ibuki Tanaka;Yoshiyuki Amemiya

  • Study of inhomogeneity of supercritical water by small-angle x-ray scattering

    Takeshi Morita;Kohei Kusano;Hiroto Ochiai;Ken-ichi Saitow

  • Corrections for Intensity Data in Energy-dispersive X-Ray Diffractometry of Liquids. Application to Carbon Tetrachloride

    Keiko Nishikawa;Takao Iijima

  • Effect of an “Ionic Liquid” Cation, 1-Butyl-3-methylimidazolium, on the Molecular Organization of H2O

    Kumiko Miki;Peter Westh;Keiko Nishikawa;Yoshikata Koga

  • Effects of sputtering conditions on formation of gold nanoparticles in sputter deposition technique

    Yoshikiyo Hatakeyama;Kei Onishi;Keiko Nishikawa

  • Phase Behaviors of Room Temperature Ionic Liquid Linked with Cation Conformational Changes: 1-Butyl-3-methylimidazolium Hexafluorophosphate

    Takatsugu Endo;Tatsuya Kato;Ken-ichi Tozaki;Keiko Nishikawa

  • Effects of Methylation at the 2 Position of the Cation Ring on Phase Behaviors and Conformational Structures of Imidazolium-Based Ionic Liquids

    Takatsugu Endo;Tatsuya Kato;Keiko Nishikawa

  • Synthesis of Gold Nanoparticles in Liquid Polyethylene Glycol by Sputter Deposition and Temperature Effects on their Size and Shape

    Yoshikiyo Hatakeyama;Takeshi Morita;Satoshi Takahashi;Kei Onishi

  • Small-Angle X-ray Scattering Study of Au Nanoparticles Dispersed in the Ionic Liquids 1 -Alkyl-3-methylimidazolium Tetrafluoroborate

    Yoshikiyo Hatakeyama;Maimi Okamoto;Tsukasa Torimoto;Susumu Kuwabata

Frequent Co-Authors

Peter Westh
Peter Westh Technical University of Denmark
Kozo Fujii
Kozo Fujii Tokyo University of Science
Katsumi Kaneko
Katsumi Kaneko Shinshu University
S. Sen
S. Sen University of California, Davis
Hideaki Shirota
Hideaki Shirota Chiba University
Akiko Kobayashi
Akiko Kobayashi Nihon University
Hiroyuki Ohno
Hiroyuki Ohno Tokyo University of Agriculture and Technology
Hiro-o Hamaguchi
Hiro-o Hamaguchi National Yang Ming Chiao Tung University
Kiyotaka Asakura
Kiyotaka Asakura Hokkaido University
Kazuyuki Tohji
Kazuyuki Tohji Tohoku University

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