World's Best Scientists 2026 revealed!
Hiroshi Okamoto

Hiroshi Okamoto

D-Index & Metrics

Materials Science

D-Index
78
Citations
21670
World Ranking
2978
National Ranking
124

Chemistry

D-Index
78
Citations
20218
World Ranking
3843
National Ranking
216

Overview

Hiroshi Okamoto is affiliated with the University of Tokyo in Japan and has contributed extensively to research in engineering, materials science, and physics and astronomy. Their work covers a wide range of topics with particular focus on organic and molecular conductors, perovskite materials, terahertz technology, acoustic wave resonator technologies, and solid-state spectroscopy and crystallography.

Okamoto's research spans several subfields, including electrical and electronic engineering, atomic and molecular physics and optics, electronic, optical and magnetic materials, biomedical engineering, and condensed matter physics.

The researcher has been published frequently in key venues such as Physical Review B, where they have eight publications, the Journal of the Physical Society of Japan with four publications, Nature Communications and Physical Review Research each hosting three, and the Journal of the American Chemical Society with two papers.

Notable recent papers include:

  • "A review of autonomous agricultural vehicles (The experience of Hokkaido University)" (2020), Journal of Terramechanics
  • "The Effectiveness of an Active Learning Program in Promoting a Healthy Lifestyle among Older Adults with Low Health Literacy: A Randomized Controlled Trial" (2020), Gerontology
  • "Long Carbon-Carbon Bonding beyond 2 Å in Tris(9-fluorenylidene)methane" (2021), Journal of the American Chemical Society
  • "Laser Pouch Motors: Selective and Wireless Activation of Soft Actuators by Laser-Powered Liquid-to-Gas Phase Change" (2020), IEEE Robotics and Automation Letters
  • "Ni(III) Mott-Hubbard-like State Containing High-Spin Ni(II) in a Semiconductive Bromide-Bridged Ni-Chain Compound" (2022), Inorganic Chemistry

Frequent co-authors collaborating with Okamoto include Tatsuya Miyamoto with 34 joint works, N. Kida with 15, N. TAKAMURA with 10, Takeshi Morimoto with 7, and T Yamakawa with 6 co-authored publications.

Best Publications

  • Optical bandgap energy of wurtzite InN

    Unknown

  • Ultrafast optical switching to a metallic state by photoinduced mott transition in a halogen-bridged nickel-chain compound.

    S. Iwai;S. Iwai;M. Ono;A. Maeda;H. Matsuzaki

  • Gigantic optical nonlinearity in one-dimensional Mott–Hubbard insulators

    H. Kishida;H. Matsuzaki;H. Okamoto;H. Okamoto;T. Manabe

  • New Semiconductor Alloy GaAs1-xBix Grown by Metal Organic Vapor Phase Epitaxy

    Kunishige Oe;Hiroshi Okamoto

  • Cyclic ADP-ribose Binds to FK506-binding Protein 12.6 to Release Ca2+ from Islet Microsomes

    Naoya Noguchi;Shin Takasawa;Koji Nata;Akira Tohgo

  • CD38 DISRUPTION IMPAIRS GLUCOSE-INDUCED INCREASES IN CYCLIC ADP-RIBOSE, CA2+I, AND INSULIN SECRETION

    Ichiro Kato;Yasuhiko Yamamoto;Miki Fujimura;Naoya Noguchi

  • Septic Shock Is Associated with Receptor for Advanced Glycation End Products Ligation of LPS

    Yasuhiko Yamamoto;Ai Harashima;Hidehito Saito;Koichi Tsuneyama

  • Thermochromism in an organic crystal based on the coexistence of sigma- and pi-dimers.

    Yasushi Morita;Yasushi Morita;Shuichi Suzuki;Kozo Fukui;Shigeaki Nakazawa

  • Inhibition of MCP-1/CCR2 pathway ameliorates the development of diabetic nephropathy

    Hiroshi Kanamori;Takeshi Matsubara;Akira Mima;Eriko Sumi

  • Two-step spin conversion in a cyanide-bridged ferrous square.

    Masayuki Nihei;Mayumi Ui;Mizuho Yokota;Lingqin Han

  • Recent advances in the Okamoto model: the CD38-cyclic ADP-ribose signal system and the regenerating gene protein (Reg)-Reg receptor system in beta-cells.

    Hiroshi Okamoto;Shin Takasawa

  • Potential Oscillations in Galvanostatic Electrooxidation of Formic Acid on Platinum: A Time-Resolved Surface-Enhanced Infrared Study

    Gabor Samjeské;Atsushi Miki;Shen Ye;Akira Yamakata

  • Bottom-up realization of a porous metal–organic nanotubular assembly

    Kazuya Otsubo;Kazuya Otsubo;Yusuke Wakabayashi;Jun Ohara;Jun Ohara;Shoji Yamamoto

  • Programmable spin-state switching in a mixed-valence spin-crossover iron grid

    Takuto Matsumoto;Graham N. Newton;Takuya Shiga;Shinya Hayami

  • Quantum interference between charge excitation paths in a solid-state Mott insulator

    S. Wall;D. Brida;S. R. Clark;Henri P. Ehrke

  • General features of photoinduced spin dynamics in ferromagnetic and ferrimagnetic compounds

    T. Ogasawara;K. Ohgushi;Y. Tomioka;K. S. Takahashi

  • Photoinduced metallic state mediated by spin-charge separation in a one-dimensional organic Mott insulator.

    H. Okamoto;H. Okamoto;H. Matsuzaki;T. Wakabayashi;Y. Takahashi

  • Effect of Well Size Fluctuation on Photoluminescence Spectrum of AlAs–GaAs Superlattices

    Leon Goldstein;Yoshiji Horikoshi;Seigo Tarucha;Hiroshi Okamoto

  • Cyclic ADP-ribose and Inositol 1,4,5-Trisphosphate as Alternate Second Messengers for Intracellular Ca2+ Mobilization in Normal and Diabetic β-Cells

    Shin Takasawa;Takako Akiyama;Koji Nata;Michio Kuroki

  • Anomalous dielectric response in tetrathiafulvalene-p-chloranil as observed in temperature- and pressure-induced neutral-to-ionic phase transition.

    H. Okamoto;T. Mitani;Y. Tokura;S. Koshihara

  • New Semiconductor Alloy GaAs_ Bi_x Grown by Metal Organic Vapor Phase Epitaxy

    Kunishige Oe;Hiroshi Okamoto

Frequent Co-Authors

Masahiro Yamashita
Masahiro Yamashita Tohoku University
Tadaoki Mitani
Tadaoki Mitani Japan Advanced Institute of Science and Technology
Shin Takasawa
Shin Takasawa Nara Medical University
Yoshinori Tokura
Yoshinori Tokura University of Tokyo
Hitoshi Miyasaka
Hitoshi Miyasaka Tohoku University
Yasuhiro Tokura
Yasuhiro Tokura University of Tsukuba
Sachio Horiuchi
Sachio Horiuchi National Institute of Advanced Industrial Science and Technology
Seigo Tarucha
Seigo Tarucha University of Tokyo
Naoyuki Kamatani
Naoyuki Kamatani StaGen (Japan)
Tatsuo Hasegawa
Tatsuo Hasegawa University of Tokyo

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