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Osamu Niwa

Osamu Niwa

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D-Index & Metrics

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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 59 10282 9301 743 683 397 10936
Engineering and Technology 59 2389 2285 29 27 381 10789

Osamu Niwa publications per year

The chart shows the history of publications by Osamu Niwa between 1983 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Osamu Niwa published across 43 years, from 1983 to 2025, averaging 10.1 papers a year. Output peaked at 26 publications in 2002. 5 of the 435 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1983 to 2025. Vertical axis: number of publications, 0 to 26. Peak 26 publications in 2002. 1983: 1 publication 1984: 6 publications 1985: 4 publications 1986: 3 publications 1987: 6 publications 1988: 4 publications 1989: 4 publications 1990: 6 publications 1991: 3 publications 1992: 9 publications 1993: 9 publications 1994: 5 publications 1995: 4 publications 1996: 13 publications 1997: 11 publications 1998: 14 publications 1999: 13 publications 2000: 21 publications 2001: 18 publications 2002: 26 publications 2003: 14 publications 2004: 14 publications 2005: 17 publications 2006: 21 publications 2007: 13 publications 2008: 22 publications 2009: 7 publications 2010: 10 publications 2011: 12 publications 2012: 17 publications 2013: 11 publications 2014: 14 publications 2015: 12 publications 2016: 15 publications 2017: 7 publications 2018: 6 publications 2019: 7 publications 2020: 10 publications 2021: 11 publications 2022: 6 publications 2023: 4 publications 2024: 4 publications 2025: 1 publication
1983 2025

435 publications in total across all disciplines

View publications per year as a table
Osamu Niwa: publications per year, 1983 to 2025
Year Publications
1983 1
1984 6
1985 4
1986 3
1987 6
1988 4
1989 4
1990 6
1991 3
1992 9
1993 9
1994 5
1995 4
1996 13
1997 11
1998 14
1999 13
2000 21
2001 18
2002 26
2003 14
2004 14
2005 17
2006 21
2007 13
2008 22
2009 7
2010 10
2011 12
2012 17
2013 11
2014 14
2015 12
2016 15
2017 7
2018 6
2019 7
2020 10
2021 11
2022 6
2023 4
2024 4
2025 1
Total 435
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Osamu Niwa publications per year - data summary

  • Osamu Niwa, a Engineering and Technology scholar from Saitama Institute of Technology, has 435 publications recorded across 43 years, from 1983 to 2025.
  • The oldest publication on record dates to 1983 and the most recent to 2025.
  • The most productive year is 2002, with 26 publications.
  • The least productive years with any output are 1983 and 2025, with 1 publication each.
  • The rate of publication averages 10.1 papers per year over the whole span, or 10.1 per year counting only the 43 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 26 publications, 6% of the career total.
  • Split into equal eras - 1983-1997: 88 publications (5.9 per year); 1998-2012: 239 publications (15.9 per year); 2013-2025: 108 publications (8.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Osamu Niwa publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Osamu Niwa sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: publications, 38–47 to 804+. Vertical axis: number of scientists, 0 to 457. Most scientists, 457, have 148–157 publications. The last bar groups every scientist with 804 publications or more. The highlighted bar, 378–387 publications, is where this scientist sits. 38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38–47 publications 804+

This scientist: 381 publications — 87th percentile

87% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

View publications distribution as a table
Number of Engineering and Technology scientists by publication count, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
Publications Scientists This scientist
38–47 20
48–57 35
58–67 96
68–77 135
78–87 190
88–97 259
98–107 283
108–117 369
118–127 341
128–137 386
138–147 372
148–157 457
158–167 415
168–177 407
178–187 421
188–197 378
198–207 403
208–217 317
218–227 346
228–237 321
238–247 260
248–257 280
258–267 240
268–277 214
278–287 242
288–297 203
298–307 166
308–317 154
318–327 175
328–337 159
338–347 99
348–357 131
358–367 106
368–377 118
378–387 97 381
388–397 108
398–407 82
408–417 71
418–427 64
428–437 55
438–447 54
448–457 60
458–467 47
468–477 40
478–487 30
488–497 29
498–507 38
508–517 40
518–527 32
528–537 23
538–547 28
548–557 23
558–567 19
568–577 16
578–587 17
588–597 18
598–607 22
608–617 15
618–627 9
628–637 11
638–647 21
648–657 12
658–667 9
668–677 11
678–687 9
688–697 6
698–707 14
708–717 7
718–727 8
728–737 10
738–747 9
748–757 5
758–767 5
768–777 11
778–787 7
788–797 2
798–803 4
804+ 100
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Osamu Niwa publication distribution in Engineering and Technology in 2026 - data summary

  • The chart plots the publication count of all 9,796 Engineering and Technology scientists ranked by Research.com in 2026, grouped into 78 ranges running from 38–47 to 804+ publications.
  • Osamu Niwa, a Engineering and Technology scholar from Saitama Institute of Technology, records 381 publications - the 87th percentile of the discipline.
  • 87% of ranked Engineering and Technology scientists score the same or lower than Osamu Niwa, and about 13% score higher.
  • The median of the discipline falls in the 198–207 publications range, and Osamu Niwa ranks above the median.
  • The most crowded range is 148–157 publications, holding 457 scientists (5% of the field).
  • 61% of the field sits in the lowest quarter of the value range (up to 228–237 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 804 publications or more, 100 scientists in all (1% of the field).

Osamu Niwa D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Osamu Niwa sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: D-Index, 30 to 107+. Vertical axis: number of scientists, 0 to 426. Most scientists, 426, have 42 D-Index. The last bar groups every scientist with 107 D-Index or more. The highlighted bar, 59 D-Index, is where this scientist sits. 30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 59 D-Index — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

View D-Index distribution as a table
Number of Engineering and Technology scientists by D-index, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
D-Index Scientists This scientist
30 59
31 114
32 129
33 189
34 200
35 262
36 311
37 312
38 350
39 385
40 348
41 362
42 426
43 380
44 310
45 341
46 301
47 306
48 271
49 246
50 210
51 253
52 213
53 221
54 195
55 186
56 170
57 167
58 166
59 144 59
60 152
61 141
62 138
63 131
64 118
65 114
66 119
67 95
68 87
69 77
70 89
71 69
72 54
73 46
74 55
75 54
76 49
77 53
78 46
79 28
80 39
81 36
82 24
83 26
84 36
85 18
86 25
87 19
88 26
89 27
90 23
91 15
92 12
93 9
94 15
95 10
96 13
97 13
98 9
99 7
100 7
101 8
102 7
103 7
104 9
105 6
106 9
107+ 99
Download as CSV

Osamu Niwa D-index placement in Engineering and Technology in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,796 Engineering and Technology scientists ranked by Research.com in 2026, grouped into 78 ranges running from 30 to 107+ D-Index.
  • Osamu Niwa, a Engineering and Technology scholar from Saitama Institute of Technology, records 59 D-Index - the 77th percentile of the discipline.
  • 77% of ranked Engineering and Technology scientists score the same or lower than Osamu Niwa, and about 23% score higher.
  • The median of the discipline falls in the 47 D-Index range, and Osamu Niwa ranks above the median.
  • The most crowded range is 42 D-Index, holding 426 scientists (4% of the field).
  • 57% of the field sits in the lowest quarter of the value range (up to 49 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 107 D-Index or more, 99 scientists in all (1% of the field).

Overview

Osamu Niwa is affiliated with the Saitama Institute of Technology in Japan and conducts research primarily in the field of engineering, with a focus on electrical and electronic engineering. Their work spans various subfields including electrochemistry, renewable energy and sustainability, materials chemistry, and bioengineering.

Their research interests are reflected in several core topics, notably:

  • Electrochemical sensors and biosensors
  • Electrochemical analysis and applications
  • Electrocatalysts for energy conversion
  • Analytical chemistry and sensors
  • Conducting polymers and applications
  • Nanoporous metals and alloys
  • Advanced biosensing and bioanalysis techniques

Osamu Niwa has published multiple papers addressing these themes. Significant recent papers include:

  • "Electrochemistry in bicontinuous microemulsions derived from two immiscible electrolyte solutions for a membrane-free redox flow battery" (2023), published in Journal of Colloid and Interface Science
  • "Electrochemical enzyme biosensor for carnitine detection based on cathodic stripping voltammetry" (2020), published in Sensors and Actuators B Chemical
  • "The influence mechanism of the molecular structure on the peak current and peak potential in electrochemical detection of typical quinolone antibiotics" (2021), published in Physical Chemistry Chemical Physics
  • "Hybrid Carbon Film Electrodes for Electroanalysis" (2020), published in Analytical Sciences
  • "Monolithic Au Nanoscale Films with Tunable Nanoporosity Prepared via Dynamic Soft Templating for Electrocatalytic Oxidation of Methanol" (2020), published in ACS Applied Nano Materials

Their frequent coauthors include:

  • Shunsuke Shiba
  • Dai Kato
  • Tomoyuki Kamata
  • Saki Ohta
  • Masashi Kunitake

Osamu Niwa's work has been published predominantly in the following venues:

  • Analytical Sciences
  • ECS Meeting Abstracts
  • Electrochemistry
  • BUNSEKI KAGAKU
  • Journal of Colloid and Interface Science

Best Publications

  • Characterization of platinum nanoparticle-embedded carbon film electrode and its detection of hydrogen peroxide.

    Tianyan You;Osamu Niwa;Masato Tomita;Shigeru Hirono

  • Electrochemical behavior of reversible redox species at interdigitated array electrodes with different geometries: consideration of redox cycling and collection efficiency

    Osamu. Niwa;Masao. Morita;Hisao. Tabei

  • Small-volume voltammetric detection of 4-aminophenol with interdigitated array electrodes and its application to electrochemical enzyme immunoassay

    Osamu Niwa;Osamu Niwa;Yan Xu;Yan Xu;H. Brian Halsall;William R. Heineman

  • Quantitative analysis of reversible diffusion-controlled currents of redox soluble species at interdigitated array electrodes under steady-state conditions

    Koichi Aoki;Masao Morita;Osamu Niwa;Hisao Tabei

  • An amperometric detector formed of highly dispersed Ni nanoparticles embedded in a graphite-like carbon film electrode for sugar determination.

    Tianyan You;Osamu Niwa;Zilin Chen;Katsuyoshi Hayashi

  • Electrochemical performance of angstrom level flat sputtered carbon film consisting of sp2 and sp3 mixed bonds.

    Osamu Niwa;Jianbo Jia;Yukari Sato;Dai Kato

  • On-chip enzyme immunoassay of a cardiac marker using a microfluidic device combined with a portable surface plasmon resonance system.

    Ryoji Kurita;Yoshimi Yokota;Yukari Sato;and Fumio Mizutani

  • A nanocarbon film electrode as a platform for exploring DNA methylation

    Dai Kato;Naoyuki Sekioka;Naoyuki Sekioka;Akio Ueda;Akio Ueda;Ryoji Kurita

  • Electrochemical polymerization of pyrrole on polymer-coated electrodes

    Osamu Niwa;Toshiaki Tamamura

  • Concentration of Extracellular l-Glutamate Released from Cultured Nerve Cells Measured with a Small-Volume Online Sensor

    Osamu Niwa;Keiichi Torimitsu;Masao Morita;Peter Osborne

  • Detection of electrochemical enzymatic reactions by surface plasmon resonance measurement.

    Yuzuru Iwasaki;Tsutomu Horiuchi;Osamu Niwa

  • Interdigitated array microelectrodes as electrochemical sensors

    Masao Morita;Osamu Niwa;Tsutomu Horiuchi

  • Structure and Electrochemical Properties of Carbon Films Prepared by a Electron Cyclotron Resonance Sputtering Method

    Jianbo Jia;Dai Kato;Ryoji Kurita;Yukari Sato

  • Fiber-optic conical microsensors for surface plasmon resonance using chemically etched single-mode fiber

    Kazuyoshi Kurihara;Hiroyuki Ohkawa;Yuzuru Iwasaki;Osamu Niwa

  • Electrochemical detection method and apparatus therefor.

    Tsutomu Horiuchi;Osamu Niwa;Hisao Tabei;Masao Morita

  • Characterization and electrochemical properties of highly dispersed copper oxide/hydroxide nanoparticles in graphite-like carbon films prepared by RF sputtering method

    Tianyan You;Osamu Niwa;Masato Tomita;Hiroshi Ando

  • Fabrication and characteristics of vertically separated interdigitated array electrodes

    Osamu Niwa;Masao Morita;Hisao Tabei

  • Voltammetric measurements of reversible and quasi-reversible redox species using carbon film based interdigitated array microelectrodes

    Osamu. Niwa;Hisao. Tabei

  • Electroanalysis with interdigitated array microelectrodes

    Osamu Niwa

  • Accurate and reproducible detection of proteins in water using an extended-gate type organic transistor biosensor

    Tsukuru Minamiki;Tsuyoshi Minami;Ryoji Kurita;Osamu Niwa

  • A surface plasmon resonance immunosensor for detecting a dioxin precursor using a gold binding polypeptide

    Nobuaki Soh;Tomoyuki Tokuda;Tomomi Watanabe;Keiko Mishima

Frequent Co-Authors

Toshiaki Tamamura
Toshiaki Tamamura NTT Electronics
Koji Suzuki
Koji Suzuki Keio University
Tianyan You
Tianyan You Chinese Academy of Sciences
Haoshen Zhou
Haoshen Zhou Nanjing University
Itaru Honma
Itaru Honma Tohoku University
Takeo Yamada
Takeo Yamada National Institute of Advanced Industrial Science and Technology
Shizuo Tokito
Shizuo Tokito Yamagata University
Jianbo Jia
Jianbo Jia Wuyi University
Peter T. Kissinger
Peter T. Kissinger Purdue University West Lafayette
Tomokazu Matsue
Tomokazu Matsue Tohoku University

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