Takaharu Okajima

Publications
54
Citations
533
h-index
14
Found 
Found 
Found 
See full statistics
Total publications
54
Total citations
533
Citations per publication
9.87
Average publications per year
1.8
Average coauthors
3.39
Publications years
1995-2024 (30 years)
h-index
14
i10-index
14
m-index
0.47
o-index
48
g-index
23
w-index
2
Metrics description
h-index
A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.
i10-index
The number of the author's publications that received at least 10 links each.
m-index
The researcher's m-index is numerically equal to the ratio of his h-index to the number of years that have passed since the first publication.
o-index
The geometric mean of the h-index and the number of citations of the most cited article of the scientist.
g-index
For a given set of articles, sorted in descending order of the number of citations that these articles received, the g-index is the largest number such that the g most cited articles received (in total) at least g2 citations.
w-index
If w articles of a researcher have at least 10w citations each and other publications are less than 10(w+1) citations, then the researcher's w-index is equal to w.

Fields of science

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4
6
8
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12
General Physics and Astronomy, 11, 20.37%
General Physics and Astronomy
11 publications, 20.37%
Physics and Astronomy (miscellaneous), 8, 14.81%
Physics and Astronomy (miscellaneous)
8 publications, 14.81%
General Chemistry, 7, 12.96%
General Chemistry
7 publications, 12.96%
Condensed Matter Physics, 6, 11.11%
Condensed Matter Physics
6 publications, 11.11%
General Engineering, 6, 11.11%
General Engineering
6 publications, 11.11%
Surfaces, Coatings and Films, 3, 5.56%
Surfaces, Coatings and Films
3 publications, 5.56%
Biochemistry, 3, 5.56%
Biochemistry
3 publications, 5.56%
Physical and Theoretical Chemistry, 3, 5.56%
Physical and Theoretical Chemistry
3 publications, 5.56%
General Materials Science, 3, 5.56%
General Materials Science
3 publications, 5.56%
Electrical and Electronic Engineering, 3, 5.56%
Electrical and Electronic Engineering
3 publications, 5.56%
Bioengineering, 3, 5.56%
Bioengineering
3 publications, 5.56%
Surfaces and Interfaces, 3, 5.56%
Surfaces and Interfaces
3 publications, 5.56%
Organic Chemistry, 2, 3.7%
Organic Chemistry
2 publications, 3.7%
Pharmaceutical Science, 2, 3.7%
Pharmaceutical Science
2 publications, 3.7%
Biotechnology, 2, 3.7%
Biotechnology
2 publications, 3.7%
Energy Engineering and Power Technology, 2, 3.7%
Energy Engineering and Power Technology
2 publications, 3.7%
Biomedical Engineering, 2, 3.7%
Biomedical Engineering
2 publications, 3.7%
Renewable Energy, Sustainability and the Environment, 2, 3.7%
Renewable Energy, Sustainability and the Environment
2 publications, 3.7%
Electronic, Optical and Magnetic Materials, 1, 1.85%
Electronic, Optical and Magnetic Materials
1 publication, 1.85%
Molecular Biology, 1, 1.85%
Molecular Biology
1 publication, 1.85%
General Medicine, 1, 1.85%
General Medicine
1 publication, 1.85%
Cell Biology, 1, 1.85%
Cell Biology
1 publication, 1.85%
Biophysics, 1, 1.85%
Biophysics
1 publication, 1.85%
Atomic and Molecular Physics, and Optics, 1, 1.85%
Atomic and Molecular Physics, and Optics
1 publication, 1.85%
Instrumentation, 1, 1.85%
Instrumentation
1 publication, 1.85%
Mechanical Engineering, 1, 1.85%
Mechanical Engineering
1 publication, 1.85%
Mechanics of Materials, 1, 1.85%
Mechanics of Materials
1 publication, 1.85%
2
4
6
8
10
12

Journals

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10
15
20
25
Seibutsu Butsuri
22 publications, 40.74%
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
6 publications, 11.11%
Applied Physics Letters
4 publications, 7.41%
Applied Surface Science
3 publications, 5.56%
Journal of Power Sources
3 publications, 5.56%
Current Pharmaceutical Biotechnology
2 publications, 3.7%
Journal of Nanoscience and Nanotechnology
2 publications, 3.7%
Ultramicroscopy
1 publication, 1.85%
Organic and Biomolecular Chemistry
1 publication, 1.85%
AIP Advances
1 publication, 1.85%
Biophysical Chemistry
1 publication, 1.85%
Current Protein and Peptide Science
1 publication, 1.85%
Soft Matter
1 publication, 1.85%
Electrochimica Acta
1 publication, 1.85%
Nanotechnology
1 publication, 1.85%
Journal of the Physical Society of Japan
1 publication, 1.85%
5
10
15
20
25

Citing journals

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50
60
70
Journal not defined, 62, 11.63%
Journal not defined
62 citations, 11.63%
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
39 citations, 7.32%
Soft Matter
18 citations, 3.38%
Applied Physics Letters
15 citations, 2.81%
Biophysical Journal
12 citations, 2.25%
Scientific Reports
12 citations, 2.25%
Langmuir
12 citations, 2.25%
Macromolecules
9 citations, 1.69%
Ultramicroscopy
8 citations, 1.5%
Applied Surface Science
7 citations, 1.31%
International Journal of Molecular Sciences
7 citations, 1.31%
Sensors
7 citations, 1.31%
Microscopy Research and Technique
6 citations, 1.13%
Nanotechnology
6 citations, 1.13%
Journal of the Mechanical Behavior of Biomedical Materials
6 citations, 1.13%
Journal of Sound and Vibration
6 citations, 1.13%
Journal of Applied Physics
5 citations, 0.94%
Nonlinear Dynamics
5 citations, 0.94%
Journal of Biomechanics
5 citations, 0.94%
Nanoscale
4 citations, 0.75%
Surface Science Reports
4 citations, 0.75%
Frontiers in Cell and Developmental Biology
4 citations, 0.75%
Beilstein Journal of Nanotechnology
4 citations, 0.75%
Journal of Micromechanics and Microengineering
4 citations, 0.75%
Cells
4 citations, 0.75%
MRS Proceedings
4 citations, 0.75%
Seibutsu Butsuri
4 citations, 0.75%
Micromachines
3 citations, 0.56%
Bioanalytical Reviews
3 citations, 0.56%
Journal of Physics: Conference Series
3 citations, 0.56%
The Analyst
3 citations, 0.56%
Nano Letters
3 citations, 0.56%
Mechanics of Materials
3 citations, 0.56%
IEEE Transactions on Instrumentation and Measurement
3 citations, 0.56%
Lab on a Chip
3 citations, 0.56%
ACS Biomaterials Science and Engineering
3 citations, 0.56%
NanoScience and Technology
3 citations, 0.56%
PLoS ONE
3 citations, 0.56%
Advanced Materials
3 citations, 0.56%
Journal of Chemical Physics
2 citations, 0.38%
Micron
2 citations, 0.38%
Microscopy and Microanalysis
2 citations, 0.38%
Methods in Molecular Biology
2 citations, 0.38%
JVC/Journal of Vibration and Control
2 citations, 0.38%
Small Methods
2 citations, 0.38%
Biochimica et Biophysica Acta - General Subjects
2 citations, 0.38%
International Journal of Non-Linear Mechanics
2 citations, 0.38%
AIP Advances
2 citations, 0.38%
ACS Nano
2 citations, 0.38%
Biophysical Chemistry
2 citations, 0.38%
Small
2 citations, 0.38%
Acta Biomaterialia
2 citations, 0.38%
Ultrasonics
2 citations, 0.38%
Review of Scientific Instruments
2 citations, 0.38%
Communications Biology
2 citations, 0.38%
Carbohydrate Polymers
2 citations, 0.38%
Advanced Drug Delivery Reviews
2 citations, 0.38%
Frontiers in Bioengineering and Biotechnology
2 citations, 0.38%
Biomaterials
2 citations, 0.38%
Journal of Power Sources
2 citations, 0.38%
Journal of Physical Chemistry B
2 citations, 0.38%
Measurement Science and Technology
2 citations, 0.38%
Analytical Chemistry
2 citations, 0.38%
ACS Omega
2 citations, 0.38%
Surface and Interface Analysis
2 citations, 0.38%
Bioengineering
2 citations, 0.38%
Biomacromolecules
2 citations, 0.38%
Journal of Biomechanical Engineering
2 citations, 0.38%
Journal of Colloid and Interface Science
2 citations, 0.38%
Journal of Vacuum Science and Technology B
2 citations, 0.38%
Biophysics (Russian Federation)
2 citations, 0.38%
Physical Review B
2 citations, 0.38%
Biophysics Reviews
2 citations, 0.38%
Nonlinear Theory and Its Applications IEICE
2 citations, 0.38%
Biophysical Reviews
1 citation, 0.19%
Australian Journal of Chemistry
1 citation, 0.19%
Journal of Surface Investigation
1 citation, 0.19%
Polymer Reviews
1 citation, 0.19%
Materials Science and Engineering: R: Reports
1 citation, 0.19%
Proceedings of the National Academy of Sciences of the United States of America
1 citation, 0.19%
FEBS Letters
1 citation, 0.19%
Surface Science
1 citation, 0.19%
Applied Physics Reviews
1 citation, 0.19%
Pharmaceuticals
1 citation, 0.19%
Journal of Photochemistry and Photobiology B: Biology
1 citation, 0.19%
IEEE Transactions on Nanotechnology
1 citation, 0.19%
Physical Chemistry Chemical Physics
1 citation, 0.19%
Journal of Industrial and Engineering Chemistry
1 citation, 0.19%
Meccanica
1 citation, 0.19%
Colloids and Surfaces B: Biointerfaces
1 citation, 0.19%
Photochemistry and Photobiology
1 citation, 0.19%
Optical Review
1 citation, 0.19%
RSC Advances
1 citation, 0.19%
Nature Communications
1 citation, 0.19%
IFAC-PapersOnLine
1 citation, 0.19%
IUTAM Bookseries
1 citation, 0.19%
European Journal of Cell Biology
1 citation, 0.19%
Moscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizika)
1 citation, 0.19%
Surface Innovations
1 citation, 0.19%
Royal Society Open Science
1 citation, 0.19%
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Publishers

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20
25
Biophysical Society of Japan
22 publications, 40.74%
Elsevier
9 publications, 16.67%
Japan Society of Applied Physics
6 publications, 11.11%
AIP Publishing
5 publications, 9.26%
Bentham Science Publishers Ltd.
3 publications, 5.56%
Royal Society of Chemistry (RSC)
2 publications, 3.7%
American Scientific Publishers
2 publications, 3.7%
IOP Publishing
1 publication, 1.85%
Physical Society of Japan
1 publication, 1.85%
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10
15
20
25

Organizations from articles

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10
15
20
25
30
35
40
Hokkaido University
38 publications, 59.38%
Tokyo Institute of Technology
10 publications, 15.63%
Organization not defined, 6, 9.38%
Organization not defined
6 publications, 9.38%
Seoul National University
2 publications, 3.13%
Sechenov First Moscow State Medical University
1 publication, 1.56%
Tokyo University of Science
1 publication, 1.56%
Advanced Institutes of Convergence Technology
1 publication, 1.56%
Nagoya University
1 publication, 1.56%
Tohoku University
1 publication, 1.56%
Yokohama National University
1 publication, 1.56%
Purdue University
1 publication, 1.56%
RIKEN-Institute of Physical and Chemical Research
1 publication, 1.56%
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10
15
20
25
30
35
40

Countries from articles

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20
30
40
50
60
Japan, 53, 86.89%
Japan
53 publications, 86.89%
Country not defined, 4, 6.56%
Country not defined
4 publications, 6.56%
Republic of Korea, 2, 3.28%
Republic of Korea
2 publications, 3.28%
Russia, 1, 1.64%
Russia
1 publication, 1.64%
USA, 1, 1.64%
USA
1 publication, 1.64%
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20
30
40
50
60

Citing organizations

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40
60
80
100
120
Organization not defined, 113, 15.25%
Organization not defined
113 citations, 15.25%
Hokkaido University
26 citations, 3.51%
Sechenov First Moscow State Medical University
16 citations, 2.16%
University of Tsukuba
15 citations, 2.02%
Tokyo Institute of Technology
14 citations, 1.89%
Lomonosov Moscow State University
10 citations, 1.35%
University of Natural Resources and Life Sciences, Vienna
10 citations, 1.35%
National Institute of Advanced Industrial Science and Technology
9 citations, 1.21%
N.N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
8 citations, 1.08%
Keio University
8 citations, 1.08%
Materials Science Institute of Madrid
8 citations, 1.08%
Purdue University
7 citations, 0.94%
University of Chinese Academy of Sciences
6 citations, 0.81%
Technical University of Munich
6 citations, 0.81%
Nanyang Technological University
6 citations, 0.81%
George Washington University
6 citations, 0.81%
Kyoto University
6 citations, 0.81%
University of Luxembourg
6 citations, 0.81%
Kurchatov Complex of Crystallography and Photonics of NRC «Kurchatov Institute»
5 citations, 0.67%
Institute of Photon Technologies
5 citations, 0.67%
Tsinghua University
5 citations, 0.67%
Indian Institute of Engineering Science and Technology, Shibpur
5 citations, 0.67%
École Polytechnique Fédérale de Lausanne
5 citations, 0.67%
Kanazawa University
5 citations, 0.67%
University of Münster
5 citations, 0.67%
University of Tokyo
5 citations, 0.67%
University of North Texas
5 citations, 0.67%
University of Tübingen
4 citations, 0.54%
Harbin Institute of Technology
4 citations, 0.54%
Massachusetts Institute of Technology
4 citations, 0.54%
Institute for Complex Systems
4 citations, 0.54%
Northwestern University
4 citations, 0.54%
Duke University
4 citations, 0.54%
Osaka University
4 citations, 0.54%
Tohoku University
4 citations, 0.54%
Max Planck Institute for Polymer Research
4 citations, 0.54%
University of Göttingen
4 citations, 0.54%
Institute of General Pathology and Pathophysiology
3 citations, 0.4%
Peking University
3 citations, 0.4%
Aix-Marseille University
3 citations, 0.4%
University College London
3 citations, 0.4%
University of Oxford
3 citations, 0.4%
University of Cambridge
3 citations, 0.4%
University of Liverpool
3 citations, 0.4%
National University of Singapore
3 citations, 0.4%
National Taiwan University
3 citations, 0.4%
University of Florence
3 citations, 0.4%
National Institute of Standards and Technology
3 citations, 0.4%
Harvard University
3 citations, 0.4%
University of California, Riverside
3 citations, 0.4%
Universidad Autónoma de Madrid
3 citations, 0.4%
Trinity College Dublin
3 citations, 0.4%
University of Erlangen–Nuremberg
3 citations, 0.4%
University of Leeds
3 citations, 0.4%
Shenyang Institute of Automation, Chinese Academy of Sciences
3 citations, 0.4%
Universidad Complutense de Madrid
3 citations, 0.4%
University of Toronto
3 citations, 0.4%
National Institute of Biomedical Imaging and Bioengineering
3 citations, 0.4%
National University of Science & Technology (MISiS)
2 citations, 0.27%
Akdeniz University
2 citations, 0.27%
Indian Institute of Science Education and Research, Pune
2 citations, 0.27%
Beijing Normal University
2 citations, 0.27%
Zhejiang University
2 citations, 0.27%
Shanghai Jiao Tong University
2 citations, 0.27%
Karlsruhe Institute of Technology
2 citations, 0.27%
University of Bordeaux
2 citations, 0.27%
Beijing University of Posts and Telecommunications
2 citations, 0.27%
ETH Zurich
2 citations, 0.27%
University of Nantes
2 citations, 0.27%
University of Lausanne
2 citations, 0.27%
Chongqing University
2 citations, 0.27%
Technische Universität Dresden
2 citations, 0.27%
Jiangnan University
2 citations, 0.27%
University of Basel
2 citations, 0.27%
Xiamen University
2 citations, 0.27%
University of Bologna
2 citations, 0.27%
Istituti di Ricovero e Cura a Carattere Scientifico
2 citations, 0.27%
Shenzhen University
2 citations, 0.27%
Imperial College London
2 citations, 0.27%
University of Warwick
2 citations, 0.27%
Tianjin University
2 citations, 0.27%
Shanxi University
2 citations, 0.27%
Shanghai University
2 citations, 0.27%
King's College London
2 citations, 0.27%
Sorbonne University
2 citations, 0.27%
Michigan State University
2 citations, 0.27%
National Yang Ming Chiao Tung University
2 citations, 0.27%
University of Pisa
2 citations, 0.27%
University of Modena and Reggio Emilia
2 citations, 0.27%
Institute of Biostructure and Bioimaging
2 citations, 0.27%
University of Glasgow
2 citations, 0.27%
University of Melbourne
2 citations, 0.27%
Stanford University
2 citations, 0.27%
Tokyo Medical and Dental University
2 citations, 0.27%
Seoul National University
2 citations, 0.27%
Chinese University of Hong Kong
2 citations, 0.27%
City University of Hong Kong
2 citations, 0.27%
Hong Kong University of Science and Technology
2 citations, 0.27%
University of California, Berkeley
2 citations, 0.27%
New York University Langone Health
2 citations, 0.27%
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120

Citing countries

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50
60
70
80
90
100
Japan, 94, 15.54%
Japan
94 citations, 15.54%
USA, 83, 13.72%
USA
83 citations, 13.72%
China, 66, 10.91%
China
66 citations, 10.91%
Country not defined, 59, 9.75%
Country not defined
59 citations, 9.75%
Germany, 49, 8.1%
Germany
49 citations, 8.1%
United Kingdom, 32, 5.29%
United Kingdom
32 citations, 5.29%
Russia, 27, 4.46%
Russia
27 citations, 4.46%
Spain, 26, 4.3%
Spain
26 citations, 4.3%
France, 19, 3.14%
France
19 citations, 3.14%
Italy, 15, 2.48%
Italy
15 citations, 2.48%
Austria, 12, 1.98%
Austria
12 citations, 1.98%
India, 11, 1.82%
India
11 citations, 1.82%
Singapore, 11, 1.82%
Singapore
11 citations, 1.82%
Australia, 9, 1.49%
Australia
9 citations, 1.49%
Switzerland, 9, 1.49%
Switzerland
9 citations, 1.49%
Republic of Korea, 8, 1.32%
Republic of Korea
8 citations, 1.32%
Ireland, 7, 1.16%
Ireland
7 citations, 1.16%
Poland, 7, 1.16%
Poland
7 citations, 1.16%
Canada, 6, 0.99%
Canada
6 citations, 0.99%
Luxembourg, 6, 0.99%
Luxembourg
6 citations, 0.99%
Netherlands, 5, 0.83%
Netherlands
5 citations, 0.83%
Iran, 4, 0.66%
Iran
4 citations, 0.66%
Israel, 3, 0.5%
Israel
3 citations, 0.5%
Mexico, 3, 0.5%
Mexico
3 citations, 0.5%
Saudi Arabia, 3, 0.5%
Saudi Arabia
3 citations, 0.5%
Turkey, 3, 0.5%
Turkey
3 citations, 0.5%
Hungary, 2, 0.33%
Hungary
2 citations, 0.33%
Greece, 2, 0.33%
Greece
2 citations, 0.33%
Pakistan, 2, 0.33%
Pakistan
2 citations, 0.33%
Chile, 2, 0.33%
Chile
2 citations, 0.33%
Ukraine, 1, 0.17%
Ukraine
1 citation, 0.17%
Belarus, 1, 0.17%
Belarus
1 citation, 0.17%
Portugal, 1, 0.17%
Portugal
1 citation, 0.17%
Belgium, 1, 0.17%
Belgium
1 citation, 0.17%
Bulgaria, 1, 0.17%
Bulgaria
1 citation, 0.17%
Hong Kong, 1, 0.17%
Hong Kong
1 citation, 0.17%
Egypt, 1, 0.17%
Egypt
1 citation, 0.17%
Cyprus, 1, 0.17%
Cyprus
1 citation, 0.17%
Colombia, 1, 0.17%
Colombia
1 citation, 0.17%
Nigeria, 1, 0.17%
Nigeria
1 citation, 0.17%
New Zealand, 1, 0.17%
New Zealand
1 citation, 0.17%
Norway, 1, 0.17%
Norway
1 citation, 0.17%
UAE, 1, 0.17%
UAE
1 citation, 0.17%
Serbia, 1, 0.17%
Serbia
1 citation, 0.17%
Thailand, 1, 0.17%
Thailand
1 citation, 0.17%
Philippines, 1, 0.17%
Philippines
1 citation, 0.17%
Finland, 1, 0.17%
Finland
1 citation, 0.17%
Croatia, 1, 0.17%
Croatia
1 citation, 0.17%
Czech Republic, 1, 0.17%
Czech Republic
1 citation, 0.17%
Sweden, 1, 0.17%
Sweden
1 citation, 0.17%
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100
  • We do not take into account publications without a DOI.
  • Statistics recalculated daily.