World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Electronics and Electrical Engineering 32 6179 5934 268 253 62 13393

Takao Yamada publications per year

The chart shows the history of publications by Takao Yamada between 1994 and 2012, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takao Yamada published across 19 years, from 1994 to 2012, averaging 3.7 papers a year. Output peaked at 14 publications in 1996. 1 of the 70 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1994 to 2012. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 1996. 1994: 5 publications 1995: 3 publications 1996: 14 publications 1997: 9 publications 1998: 14 publications 1999: 1 publication 2000: 1 publication 2001: 5 publications 2002: 3 publications 2003: 2 publications 2004: 1 publication 2005: 0 publications 2006: 2 publications 2007: 3 publications 2008: 4 publications 2009: 2 publications 2010: 0 publications 2011: 0 publications 2012: 1 publication
1994 2012

70 publications in total across all disciplines

View publications per year as a table
Takao Yamada: publications per year, 1994 to 2012
Year Publications
1994 5
1995 3
1996 14
1997 9
1998 14
1999 1
2000 1
2001 5
2002 3
2003 2
2004 1
2005 0
2006 2
2007 3
2008 4
2009 2
2010 0
2011 0
2012 1
Total 70
Download as CSV

Takao Yamada publication distribution in Electronics and Electrical Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Electronics and Electrical Engineering in 2026. The highlighted bar marks where Takao Yamada sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 53 bars. Horizontal axis: publications, 34–53 to 1,065+. Vertical axis: number of scientists, 0 to 445. Most scientists, 445, have 174–193 publications. The last bar groups every scientist with 1,065 publications or more. The highlighted bar, 54–73 publications, is where this scientist sits. 34–53 publications: 24 scientists 54–73 publications: 52 scientists 74–93 publications: 114 scientists 94–113 publications: 203 scientists 114–133 publications: 269 scientists 134–153 publications: 355 scientists 154–173 publications: 403 scientists 174–193 publications: 445 scientists 194–213 publications: 430 scientists 214–233 publications: 431 scientists 234–253 publications: 399 scientists 254–273 publications: 366 scientists 274–293 publications: 335 scientists 294–313 publications: 300 scientists 314–333 publications: 276 scientists 334–353 publications: 250 scientists 354–373 publications: 214 scientists 374–393 publications: 187 scientists 394–413 publications: 152 scientists 414–433 publications: 169 scientists 434–453 publications: 147 scientists 454–473 publications: 111 scientists 474–493 publications: 117 scientists 494–513 publications: 103 scientists 514–533 publications: 99 scientists 534–553 publications: 92 scientists 554–573 publications: 75 scientists 574–593 publications: 58 scientists 594–613 publications: 69 scientists 614–633 publications: 50 scientists 634–653 publications: 62 scientists 654–673 publications: 54 scientists 674–693 publications: 44 scientists 694–713 publications: 37 scientists 714–733 publications: 28 scientists 734–753 publications: 26 scientists 754–773 publications: 26 scientists 774–793 publications: 19 scientists 794–813 publications: 23 scientists 814–833 publications: 20 scientists 834–853 publications: 16 scientists 854–873 publications: 20 scientists 874–893 publications: 11 scientists 894–913 publications: 11 scientists 914–933 publications: 16 scientists 934–953 publications: 13 scientists 954–973 publications: 10 scientists 974–993 publications: 11 scientists 994–1,013 publications: 9 scientists 1,014–1,033 publications: 9 scientists 1,034–1,053 publications: 10 scientists 1,054–1,064 publications: 6 scientists 1,065+ publications: 99 scientists
34–53 publications 1,065+

This scientist: 62 publications — 1st percentile

1% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,065 publications or more.

View publications distribution as a table
Number of Electronics and Electrical Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 6,875 ranked scientists.
Publications Scientists This scientist
34–53 24
54–73 52 62
74–93 114
94–113 203
114–133 269
134–153 355
154–173 403
174–193 445
194–213 430
214–233 431
234–253 399
254–273 366
274–293 335
294–313 300
314–333 276
334–353 250
354–373 214
374–393 187
394–413 152
414–433 169
434–453 147
454–473 111
474–493 117
494–513 103
514–533 99
534–553 92
554–573 75
574–593 58
594–613 69
614–633 50
634–653 62
654–673 54
674–693 44
694–713 37
714–733 28
734–753 26
754–773 26
774–793 19
794–813 23
814–833 20
834–853 16
854–873 20
874–893 11
894–913 11
914–933 16
934–953 13
954–973 10
974–993 11
994–1,013 9
1,014–1,033 9
1,034–1,053 10
1,054–1,064 6
1,065+ 99
Download as CSV

Takao Yamada D-index placement in Electronics and Electrical Engineering in 2026

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

No. of scientists
50 100 150 200 250
Bar chart with 82 bars. Horizontal axis: D-Index, 30 to 111+. Vertical axis: number of scientists, 0 to 263. Most scientists, 263, have 32 D-Index. The last bar groups every scientist with 111 D-Index or more. The highlighted bar, 32 D-Index, is where this scientist sits. 30 D-Index: 178 scientists 31 D-Index: 257 scientists 32 D-Index: 263 scientists 33 D-Index: 262 scientists 34 D-Index: 244 scientists 35 D-Index: 236 scientists 36 D-Index: 211 scientists 37 D-Index: 220 scientists 38 D-Index: 214 scientists 39 D-Index: 214 scientists 40 D-Index: 205 scientists 41 D-Index: 187 scientists 42 D-Index: 194 scientists 43 D-Index: 201 scientists 44 D-Index: 155 scientists 45 D-Index: 189 scientists 46 D-Index: 148 scientists 47 D-Index: 160 scientists 48 D-Index: 134 scientists 49 D-Index: 130 scientists 50 D-Index: 141 scientists 51 D-Index: 156 scientists 52 D-Index: 108 scientists 53 D-Index: 130 scientists 54 D-Index: 112 scientists 55 D-Index: 97 scientists 56 D-Index: 111 scientists 57 D-Index: 102 scientists 58 D-Index: 108 scientists 59 D-Index: 120 scientists 60 D-Index: 103 scientists 61 D-Index: 93 scientists 62 D-Index: 92 scientists 63 D-Index: 74 scientists 64 D-Index: 77 scientists 65 D-Index: 73 scientists 66 D-Index: 64 scientists 67 D-Index: 69 scientists 68 D-Index: 60 scientists 69 D-Index: 39 scientists 70 D-Index: 57 scientists 71 D-Index: 59 scientists 72 D-Index: 46 scientists 73 D-Index: 49 scientists 74 D-Index: 38 scientists 75 D-Index: 35 scientists 76 D-Index: 32 scientists 77 D-Index: 35 scientists 78 D-Index: 31 scientists 79 D-Index: 22 scientists 80 D-Index: 34 scientists 81 D-Index: 31 scientists 82 D-Index: 34 scientists 83 D-Index: 23 scientists 84 D-Index: 18 scientists 85 D-Index: 30 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 20 scientists 89 D-Index: 8 scientists 90 D-Index: 17 scientists 91 D-Index: 7 scientists 92 D-Index: 14 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 12 scientists 97 D-Index: 10 scientists 98 D-Index: 10 scientists 99 D-Index: 12 scientists 100 D-Index: 16 scientists 101 D-Index: 5 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 8 scientists 105 D-Index: 9 scientists 106 D-Index: 13 scientists 107 D-Index: 4 scientists 108 D-Index: 5 scientists 109 D-Index: 10 scientists 110 D-Index: 8 scientists 111+ D-Index: 96 scientists
30 D-Index 111+

This scientist: 32 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 111 D-Index or more.

View D-Index distribution as a table
Number of Electronics and Electrical Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 6,875 ranked scientists.
D-Index Scientists This scientist
30 178
31 257
32 263 32
33 262
34 244
35 236
36 211
37 220
38 214
39 214
40 205
41 187
42 194
43 201
44 155
45 189
46 148
47 160
48 134
49 130
50 141
51 156
52 108
53 130
54 112
55 97
56 111
57 102
58 108
59 120
60 103
61 93
62 92
63 74
64 77
65 73
66 64
67 69
68 60
69 39
70 57
71 59
72 46
73 49
74 38
75 35
76 32
77 35
78 31
79 22
80 34
81 31
82 34
83 23
84 18
85 30
86 19
87 19
88 20
89 8
90 17
91 7
92 14
93 9
94 15
95 10
96 12
97 10
98 10
99 12
100 16
101 5
102 7
103 7
104 8
105 9
106 13
107 4
108 5
109 10
110 8
111+ 96
Download as CSV

Overview

Takao Yamada is affiliated with Nichia Corporation in Japan. Their research spans key areas within engineering and materials science, with focus on specific subfields including materials chemistry, biomedical engineering, and electrical and electronic engineering.

The main topics addressed in their work involve metal alloys wear and properties, advanced surface polishing techniques, and advanced machining and optimization techniques. These topics reflect a technical and applied approach to materials engineering and manufacturing processes.

  • Takeshi Yamaguchi
  • Keita Ueno
  • S. Yajima K. Sakashita
  • Koji Hirokado

The collaboration with frequent coauthors such as Takeshi Yamaguchi, Keita Ueno, S. Yajima K. Sakashita, and Koji Hirokado indicates a network of research partners likely involved in related engineering and materials science projects.

Takao Yamada's published works contribute to the broader engineering and materials science domains without focusing on a specific publication venue. Their research likely emphasizes practical innovation in material properties and machining technologies.

Best Publications

  • InGaN-Based Multi-Quantum-Well-Structure Laser Diodes.

    Shuji Nakamura;Masayuki Senoh;Shin–ichi Nagahama;Naruhito Iwasa

  • Superbright Green InGaN Single-Quantum-Well-Structure Light-Emitting Diodes

    Shuji Nakamura;Masayuki Senoh;Naruhito Iwasa;Shin–ichi Nagahama

  • InGaN/GaN/AlGaN-based laser diodes with modulation-doped strained-layer superlattices grown on an epitaxially laterally overgrown GaN substrate

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

  • Room‐temperature continuous‐wave operation of InGaN multi‐quantum‐well structure laser diodes

    Shuji Nakamura;Masayuki Senoh;Shin‐ichi Nagahama;Naruhito Iwasa

  • InGaN/GaN/AlGaN-Based Laser Diodes with Modulation-Doped Strained-Layer Superlattices

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

  • CONTINUOUS-WAVE OPERATION OF INGAN/GAN/ALGAN-BASED LASER DIODES GROWN ON GAN SUBSTRATES

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

  • Room-temperature continuous-wave operation of InGaN multi-quantum-well structure laser diodes with a lifetime of 27 hours

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

  • InGaN Multi-Quantum-Well-Structure Laser Diodes with Cleaved Mirror Cavity Facets

    Shuji Nakamura;Masayuki Senoh;Shin–ichi Nagahama;Naruhito Iwasa

  • Gallium nitride-based III-V group compound semiconductor

    Shuji Nakamura;Takao Yamada;Masayuki Senoh;Motokazu Yamada

  • High-Power, Long-Lifetime InGaN/GaN/AlGaN-Based Laser Diodes Grown on Pure GaN Substrates

    Shuji Nakamura;Masayuki Senoh;Shin–ichi Nagahama;Naruhito Iwasa

  • InGaN multi‐quantum‐well structure laser diodes grown on MgAl2O4 substrates

    Shuji Nakamura;Masayuki Senoh;Shin‐ichi Nagahama;Naruhito Iwasa

  • High-Power, Long-Lifetime InGaN Multi-Quantum-Well-Structure Laser Diodes

    Shuji Nakamura;Masayuki Senoh;Shin–ichi Nagahama;Naruhito Iwasa

  • Room-temperature continuous-wave operation of InGaN multi-quantum-well-structure laser diodes with a long lifetime

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

  • Ultra-High Efficiency White Light Emitting Diodes

    Yukio Narukawa;Junya Narita;Takahiko Sakamoto;Kouichiro Deguchi

  • Ridge‐geometry InGaN multi‐quantum‐well‐structure laser diodes

    Shuji Nakamura;Masayuki Senoh;Shin‐ichi Nagahama;Naruhito Iwasa

  • Characteristics of InGaN multi‐quantum‐well‐structure laser diodes

    Shuji Nakamura;Masayuki Senoh;Shin‐ichi Nagahama;Naruhito Iwasa

  • Continuous‐wave operation of InGaN multi‐quantum‐well‐structure laser diodes at 233 K

    Shuji Nakamura;Masayuki Senoh;Shin‐ichi Nagahama;Naruhito Iwasa

  • Recent progress of high efficiency white LEDs

    Yukio Narukawa;Junya Narita;Takahiko Sakamoto;Takao Yamada

  • Improvement of Luminous Efficiency in White Light Emitting Diodes by Reducing a Forward-bias Voltage

    Yukio Narukawa;Masahiko Sano;Masatsugu Ichikawa;Shunsuke Minato

  • InGaN/GaN/AlGaN-based laser diodes with cleaved facets grown on GaN substrates

    Shuji Nakamura;Masayuki Senoh;Shin-ichi Nagahama;Naruhito Iwasa

Frequent Co-Authors

Masayuki Senoh
Masayuki Senoh Nichia Corporation (Japan)
Shuji Nakamura
Shuji Nakamura University of California, Santa Barbara
Shin-ichi Nagahama
Shin-ichi Nagahama Nichia Corporation (Japan)
Masahiko Sano
Masahiko Sano Nichia Corporation (Japan)
Takashi Mukai
Takashi Mukai National Institute of Advanced Industrial Science and Technology
Yukio Narukawa
Yukio Narukawa Nichia Corporation (Japan)

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students pursuing Electronics and Electrical Engineering in the USA, exploring related online degrees can open diverse career pathways. Many professionals seek programs that blend technical expertise with management skills. For instance, a fast track project management degree online allows engineering graduates to quickly gain leadership and organizational skills essential for overseeing complex projects.

Those interested in formalizing their management capabilities might consider a project manager bachelor degree, which offers foundational knowledge to manage engineering teams and drive technology development efficiently.

Many working adults balance career and education through accelerated online bachelor degree programs accredited. Such programs provide flexibility and credible accreditation, making it easier to upskill without sacrificing job responsibilities.

In addition, areas like instructional design can complement engineering careers, especially in training or technical communication roles. The option for affordable learning is available with instructional design online master’s degrees, which equip graduates to develop effective educational materials and training programs within engineering organizations.

Best Scientists Citing Takao Yamada

Trending Scientists

Recently Published Articles