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Koji Otsuka

Koji Otsuka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 57 10994 9922 804 738 247 12985

Koji Otsuka publications per year

The chart shows the history of publications by Koji Otsuka between 1984 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Koji Otsuka published across 42 years, from 1984 to 2025, averaging 8.4 papers a year. Output peaked at 28 publications in 2015. 10 of the 353 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1984 to 2025. Vertical axis: number of publications, 0 to 28. Peak 28 publications in 2015. 1984: 1 publication 1985: 5 publications 1986: 3 publications 1987: 1 publication 1988: 0 publications 1989: 4 publications 1990: 2 publications 1991: 2 publications 1992: 0 publications 1993: 4 publications 1994: 3 publications 1995: 1 publication 1996: 2 publications 1997: 3 publications 1998: 10 publications 1999: 5 publications 2000: 8 publications 2001: 13 publications 2002: 10 publications 2003: 10 publications 2004: 9 publications 2005: 5 publications 2006: 10 publications 2007: 7 publications 2008: 12 publications 2009: 11 publications 2010: 9 publications 2011: 11 publications 2012: 8 publications 2013: 17 publications 2014: 13 publications 2015: 28 publications 2016: 18 publications 2017: 18 publications 2018: 10 publications 2019: 11 publications 2020: 15 publications 2021: 22 publications 2022: 15 publications 2023: 7 publications 2024: 4 publications 2025: 6 publications
1984 2025

353 publications in total across all disciplines

View publications per year as a table
Koji Otsuka: publications per year, 1984 to 2025
Year Publications
1984 1
1985 5
1986 3
1987 1
1988 0
1989 4
1990 2
1991 2
1992 0
1993 4
1994 3
1995 1
1996 2
1997 3
1998 10
1999 5
2000 8
2001 13
2002 10
2003 10
2004 9
2005 5
2006 10
2007 7
2008 12
2009 11
2010 9
2011 11
2012 8
2013 17
2014 13
2015 28
2016 18
2017 18
2018 10
2019 11
2020 15
2021 22
2022 15
2023 7
2024 4
2025 6
Total 353
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Koji Otsuka publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Koji Otsuka sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 241–260 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 247 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100 247
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Koji Otsuka D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Koji Otsuka sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 56–57 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 57 D-Index — 39th percentile

39% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051 57
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Koji Otsuka is affiliated with Kyoto University in Japan and has contributed to various research areas primarily within biomedical engineering and analytical chemistry fields. Their scholarly output spans several subfields including Biomedical Engineering, Spectroscopy, Molecular Biology, Analytical Chemistry, and Materials Chemistry.

The scientist's work focuses on numerous main topics, particularly Microfluidic and Capillary Electrophoresis Applications, Analytical Chemistry Methods Development, Analytical Chemistry and Chromatography, Biosensors and Analytical Detection, Esophageal Cancer Research and Treatment, Mass Spectrometry Techniques and Applications, as well as investigations related to Extracellular Vesicles in disease contexts.

Koji Otsuka has published extensively in several notable scientific venues. These include:

  • Journal of Separation Science
  • Analytical Chemistry
  • BUNSEKI KAGAKU
  • Annals of Surgical Oncology
  • Journal of Materials Chemistry B

Among recent publications, the following papers are representative:

  • Recent developments of point-of-care (POC) testing platform for biomolecules, 2020, TrAC Trends in Analytical Chemistry
  • Classification of Extracellular Vesicles Based on Surface Glycan Structures by Spongy-like Separation Media, 2022, Analytical Chemistry
  • Green port structures and their ecosystem services in highly urbanized Japanese bays, 2021, Coastal Engineering Journal
  • Carbon-Based Nanomaterials for Separation Media, 2020, Bulletin of the Chemical Society of Japan
  • Substituted meso-vinyl-BODIPY as thiol-selective fluorogenic probes for sensing unfolded proteins in the endoplasmic reticulum, 2021, Chemical Communications

The scientist has collaborated regularly with several frequent co-authors, including Michael Lämmerhofer, Gongke Li, Peter Q. Tranchida, Joseph J. Pesek, and San José, with each co-author appearing in approximately 40 joint works.

Best Publications

  • Electrokinetic separations with micellar solutions and open-tubular capillaries

    Shigeru. Terabe;Koji. Otsuka;Kunimichi. Ichikawa;Akihiro. Tsuchiya

  • Electrokinetic chromatography with micellar solution and open-tubular capillary

    Shigeru. Terabe;Koji. Otsuka;Teiichi. Ando

  • Electrokinetic chromatography with 2-O-carboxymethyl-β-cyclodextrin as a moving “stationary” phase

    Shigeru Terabe;Hiroto Ozaki;Koji Otsuka;Teiichi Ando

  • Separation of enantiomers by capillary electrophoretic techniques

    Shigeru Terabe;Koji Otsuka;Hiroyuki Nishi

  • Band broadening in electrokinetic chromatography with micellar solutions and open-tubular capillaries

    Shigeru. Terabe;Koji. Otsuka;Teiichi. Ando

  • Electrokinetic chromatography with micellar solutions : Separation of phenylthiohydantoin-amino acids

    Koji Otsuka;Shigeru Terabe;Teiichi Ando

  • Electrokinetic chromatography with micellar solutions : Retention behaviour and separation of chlorinated phenols

    Koji Otsuka;Shigeru Terabe;Teiichi Ando

  • Enantiomeric resolution by micellar electrokinetic chromatography with chiral surfactants

    Koji Otsuka;Shigeru Terabe

  • Enantiomer separation of drugs by micellar electrokinetic chromatography using chiral surfactants

    Koji Otsuka;Shigeru Terabe

  • Recent applications of on-line sample preconcentration techniques in capillary electrophoresis

    Fumihiko Kitagawa;Koji Otsuka

  • Effect of urea addition in micellar electrokinetic chromatography

    Shigeru Terabe;Yasushi Ishihama;Hiroyuki Nishi;Tsukasa Fukuyama

  • On-line focusing of flavin derivatives using Dynamic pH junction-sweeping capillary electrophoresis with laser-induced fluorescence detection.

    Philip Britz-McKibbin;Koji Otsuka;Shigeru Terabe

  • Chiral separations by micellar electrokinetic chromatography with sodium N-dodecanoyl-l-valinate

    Koji Otsuka;Junko Kawahara;Kaoru Tatekawa;Shigeru Terabe

  • Micellar electrokinetic chromatography.

    Otsuka K;Terabe S

  • Recent progress in capillary electrophoretic analysis of amino acid enantiomers.

    Fumihiko Kitagawa;Koji Otsuka

  • Micelles as pseudo-stationary phases in micellar electrokinetic chromatography.

    P.G. Muijselaar;K. Otsuka;S. Terabe

  • Effects of pH on electrokinetic velocities in micellar electrokinetic chromatography

    Koji Otsuka;Shigeru Terabe

  • Anion selective exhaustive injection-sweep-micellar electrokinetic chromatography

    Jong-Bok Kim;Koji Otsuka;Shigeru Terabe

  • Sample concentration by sample stacking and sweeping using a microemulsion and a single-isomer sulfated β-cyclodextrin as pseudostationary phases in electrokinetic chromatography

    Joselito P Quirino;Shigeru Terabe;Koji Otsuka;J.Bryan Vincent

  • Measurement of thermodynamic quantities of micellar solubilization by micellar electrokinetic chromatography with sodium dodecyl sulfate

    Shigeru Terabe;Takehisa Katsura;Yukihirao Okada;Yasushi Ishihama

Frequent Co-Authors

Shigeru Terabe
Shigeru Terabe University of Hyogo
Ken Hosoya
Ken Hosoya Kyoto Prefectural University
Mingdi Yan
Mingdi Yan University of Massachusetts Lowell
Joselito P. Quirino
Joselito P. Quirino University of Tasmania
Zhen Liu
Zhen Liu Nanjing University
Nobuo Tanaka
Nobuo Tanaka Kyoto Institute of Technology
Yoshinobu Baba
Yoshinobu Baba Nagoya University
Kei Kubota
Kei Kubota Tokyo University of Science
Kazunari Akiyoshi
Kazunari Akiyoshi Kyoto University
Munetaka Oyama
Munetaka Oyama Kyoto University

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