Hiroshi Ushiyama

1.5k total citations
52 papers, 1.3k citations indexed

About

Hiroshi Ushiyama is a scholar working on Atomic and Molecular Physics, and Optics, Materials Chemistry and Electrical and Electronic Engineering. According to data from OpenAlex, Hiroshi Ushiyama has authored 52 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Atomic and Molecular Physics, and Optics, 20 papers in Materials Chemistry and 12 papers in Electrical and Electronic Engineering. Recurrent topics in Hiroshi Ushiyama's work include Spectroscopy and Quantum Chemical Studies (14 papers), Advanced Chemical Physics Studies (13 papers) and Photochemistry and Electron Transfer Studies (9 papers). Hiroshi Ushiyama is often cited by papers focused on Spectroscopy and Quantum Chemical Studies (14 papers), Advanced Chemical Physics Studies (13 papers) and Photochemistry and Electron Transfer Studies (9 papers). Hiroshi Ushiyama collaborates with scholars based in Japan, United States and Germany. Hiroshi Ushiyama's co-authors include Koichi Yamashita, Kazuo Takatsuka, Eriko Watanabe, Hideaki Shirota, Takeo Yamaguchi, Xue-fang Yu, Naoaki Yabuuchi, Mika Fukunishi, Kuniko Chihara and Mouad Dahbi and has published in prestigious journals such as Angewandte Chemie International Edition, The Journal of Chemical Physics and Chemistry of Materials.

In The Last Decade

Hiroshi Ushiyama

52 papers receiving 1.3k citations

Peers

Countries citing papers authored by Hiroshi Ushiyama

Since Specialization

Citations

This map shows the geographic impact of Hiroshi Ushiyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hiroshi Ushiyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroshi Ushiyama more than expected).

Fields of papers citing papers by Hiroshi Ushiyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroshi Ushiyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hiroshi Ushiyama. The network helps show where Hiroshi Ushiyama may publish in the future.

Co-authorship network of co-authors of Hiroshi Ushiyama

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroshi Ushiyama. A scholar is included among the top collaborators of Hiroshi Ushiyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hiroshi Ushiyama. Hiroshi Ushiyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Viscoelasticity of Low-Molecular-Weight Polyelectrolytes 2022 ·The Journal of Physical Chemistry B ·Patrick Bonnaud, Hiroshi Ushiyama, Syogo Tejima, Jun‐ichi Fujita	4
2	Isotope Effect in the Liquid Properties of Water Confined in 100 nm Nanofluidic Channels 2021 ·The Journal of Physical Chemistry B ·Kazuma Mawatari, (unknown), Kyojiro Morikawa, Hiroshi Ushiyama, Takehiko Kitamori	6
3	Theoretical study on the enthalpies of adduct formation between alkyl iodides and chlorine atoms 2020 ·Chemical Physics Letters ·Ryuichi Wada, Kenichi Tonokura, (unknown), (unknown), (unknown), Hiroshi Ushiyama, Koichi Yamashita, Yutaka Matsumi, Shinichi Enami, Paul W. Seakins	1
4	A Theoretical study on the charge and discharge states of Na‐ion battery cathode material, Na_1+xFePO₄F 2018 ·Journal of Computational Chemistry ·Chikashi Shinagawa, Yusuke Morikawa, Shin‐ichi Nishimura, Hiroshi Ushiyama, Atsuo Yamada, Koichi Yamashita	6
5	Charge Storage Mechanism of RuO₂/Water Interfaces 2017 ·The Journal of Physical Chemistry C ·Eriko Watanabe, Hiroshi Ushiyama, Koichi Yamashita, Yusuke Morikawa, Daisuke Asakura, Masashi Okubo, Atsuo Yamada	16
6	Atomic-Scale Analysis of the RuO₂/Water Interface under Electrochemical Conditions 2016 ·The Journal of Physical Chemistry C ·Eriko Watanabe, Jan Rossmeisl, Mårten E. Björketun, Hiroshi Ushiyama, Koichi Yamashita	41
7	Black Phosphorus as a High-Capacity, High-Capability Negative Electrode for Sodium-Ion Batteries: Investigation of the Electrode/Electrolyte Interface 2016 ·Chemistry of Materials ·Mouad Dahbi, Naoaki Yabuuchi, Mika Fukunishi, Kei Kubota, Kuniko Chihara, K. Tokiwa, (unknown), Hiroshi Ushiyama, Koichi Yamashita, Jin-Young Son, (unknown), Hiroshi Oji, Shinichi Komaba	253
8	Correction: Theoretical studies on the mechanism of oxygen reduction reaction on clean and O-substituted Ta₃N₅(100) surfaces 2015 ·Catalysis Science & Technology ·Eriko Watanabe, Hiroshi Ushiyama, (unknown)	2
9	Electron wavepacket approaches to non-adiabatic transition processes in the internal rotational motion of H2CNH2+ – Charge oscillation due to electronic coherence 2015 ·Chemical Physics Letters ·(unknown), Hiroshi Ushiyama, Koichi Yamashita	2
10	First-principles study of fast Na diffusion in Na3P 2014 ·Chemical Physics Letters ·Xue-fang Yu, Giacomo Giorgi, Hiroshi Ushiyama, Koichi Yamashita	28
11	Theoretical studies on the stabilities and reactivities of Ta3N5 (1 0 0) surfaces 2013 ·Chemical Physics Letters ·Eriko Watanabe, Hiroshi Ushiyama, Koichi Yamashita	22
12	Investigation on specific adsorption of hydrogen on lithium-doped mesoporous silica 2011 ·Adsorption ·Masaru Kubo, Hiroshi Ushiyama, Atsushi Shimojima, Tatsuya Okubo	10
13	Redox-responsive molecular helices with highly condensed π-clouds 2010 ·Nature Chemistry ·Eisuke Ohta, Hiroyasu Sato, Shinji Ando, Atsuko Kosaka, Takanori Fukushima, Daisuke Hashizume, Mikio Yamasaki, Kimiko Hasegawa, Azusa Muraoka, Hiroshi Ushiyama, Koichi Yamashita, Takuzo Aida	206
14	Theoretical and Experimental Studies on Reaction Mechanism for Aerobic Alcohol Oxidation by Supported Ruthenium Hydroxide Catalysts 2010 ·The Journal of Physical Chemistry C ·(unknown), Hiroshi Ushiyama, Kazuya Yamaguchi, Koichi Yamashita, Noritaka Mizuno	29
15	Mechanisms of the Elementary Processes of Electron Wavepacket Dynamics Coupled with Proton Transfer and Hydrogen‐Atom Migration in H₂O+H₃O⁺ 2006 ·Angewandte Chemie International Edition ·Hiroshi Ushiyama, Kazuo Takatsuka	15
16	Time-resolved photoelectron spectroscopy of proton transfer in the ground state of chloromalonaldehyde: Wave-packet dynamics on effective potential surfaces of reduced dimensionality 2006 ·The Journal of Chemical Physics ·Márcio T. do N. Varella, Yasuki Arasaki, Hiroshi Ushiyama, Vincent McKoy, Kazuo Takatsuka	11
17	Methyl Group Rotation Driven by Proton Transfer through a Long‐Range Chemical Interaction 2005 ·Angewandte Chemie International Edition ·Hiroshi Ushiyama, Kazuo Takatsuka	22
18	Very Fast Tunneling in the Early Stage of Reaction Dynamics 2005 ·The Journal of Physical Chemistry A ·Hiroshi Ushiyama, Kazuo Takatsuka	2
19	Efficient calculations of classical trajectories and stability matrices for semiclassical theory with locally analytic integrator. The Hulme method revisited 2001 ·Chemical Physics Letters ·Hiroshi Ushiyama, Yasuki Arasaki, Kazuo Takatsuka	16
20	Molecular mechanics with QEq-CS (charge equilibration method generalized for charge separation system) 1999 ·Journal of Molecular Structure THEOCHEM ·Osamu Kitao, Nobuaki Miura, Hiroshi Ushiyama	14

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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