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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Electronics and Electrical Engineering 43 3962 3803 153 145 161 6371

Takayuki Kawahara publications per year

The chart shows the history of publications by Takayuki Kawahara between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takayuki Kawahara published across 56 years, from 1970 to 2025, averaging 5.1 papers a year. Output peaked at 21 publications in 2007. 31 of the 284 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2007. 1970: 1 publication 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 2 publications 1977: 2 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 3 publications 1987: 3 publications 1988: 1 publication 1989: 6 publications 1990: 3 publications 1991: 2 publications 1992: 4 publications 1993: 9 publications 1994: 3 publications 1995: 9 publications 1996: 7 publications 1997: 2 publications 1998: 5 publications 1999: 2 publications 2000: 5 publications 2001: 9 publications 2002: 11 publications 2003: 11 publications 2004: 14 publications 2005: 18 publications 2006: 19 publications 2007: 21 publications 2008: 8 publications 2009: 10 publications 2010: 7 publications 2011: 9 publications 2012: 5 publications 2013: 7 publications 2014: 9 publications 2015: 5 publications 2016: 0 publications 2017: 5 publications 2018: 4 publications 2019: 2 publications 2020: 0 publications 2021: 1 publication 2022: 6 publications 2023: 3 publications 2024: 15 publications 2025: 16 publications
1970 2025

284 publications in total across all disciplines

View publications per year as a table
Takayuki Kawahara: publications per year, 1970 to 2025
Year Publications
1970 1
1971 0
1972 0
1973 0
1974 0
1975 0
1976 2
1977 2
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 3
1987 3
1988 1
1989 6
1990 3
1991 2
1992 4
1993 9
1994 3
1995 9
1996 7
1997 2
1998 5
1999 2
2000 5
2001 9
2002 11
2003 11
2004 14
2005 18
2006 19
2007 21
2008 8
2009 10
2010 7
2011 9
2012 5
2013 7
2014 9
2015 5
2016 0
2017 5
2018 4
2019 2
2020 0
2021 1
2022 6
2023 3
2024 15
2025 16
Total 284
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Takayuki Kawahara 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 Takayuki Kawahara 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, 154–173 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: 161 publications — 18th percentile

18% 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
74–93 114
94–113 203
114–133 269
134–153 355
154–173 403 161
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
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Takayuki Kawahara 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 Takayuki Kawahara 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, 43 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: 43 D-Index — 45th percentile

45% 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
33 262
34 244
35 236
36 211
37 220
38 214
39 214
40 205
41 187
42 194
43 201 43
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
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Research.com Recognitions

  • 2007 - IEEE Fellow For contributions to low-voltage low-power random access memory circuits

Overview

Takayuki Kawahara is affiliated with Tokyo University of Science in Japan and specializes in the field of Computer Science, with a focus on Artificial Intelligence, Molecular Biology, Atomic and Molecular Physics, and Electrical and Electronic Engineering. Their research integrates topics such as Quantum Computing Algorithms and Architecture, Advanced Memory and Neural Computing, Parallel Computing and Optimization Techniques, as well as studies related to Plant and Fungal Species Descriptions and DNA and Biological Computing.

The scientist's recent publications include studies on annealing processing systems, magnetic properties, and phylogeography. Notable papers are:

  • Annealing Processing Architecture of 28-nm CMOS Chip for Ising Model With 512 Fully Connected Spins (2021) IEEE Transactions on Circuits and Systems I Regular Papers
  • Scalable fully coupled annealing processing system and multi-chip FPGA implementation (2022) Microprocessors and Microsystems
  • Phylogeography of the endangered orchids Cypripedium japonicum and Cypripedium formosanum in East Asia: Deep divergence at infra- and interspecific levels (2022) Taxon
  • Examination of Magnetization Switching Behavior by Bi-Directional Read of Spin-Orbit-Torque MRAM (2022) IEEE Transactions on Magnetics
  • Scalable Fully-Coupled Annealing Processing System Implementing 4096 Spins Using 22nm CMOS LSI (2024) IEEE Access

Kawahara has collaborated frequently with coauthors including Taichi Megumi, Akari Endo, Shinjiro Kitahara, Ryoma Iimura, and Satoshi Kitamura. This collaborative work often appears in venues such as:

  • IEEE Access
  • Microprocessors and Microsystems
  • IEEE Transactions on Circuits and Systems I Regular Papers
  • Taxon
  • 2022 IEEE Asian Solid-State Circuits Conference (A-SSCC)

Their research spans a variety of complex subject areas, linking computational approaches with biological and physical sciences. Main topics of work include:

  • Quantum Computing Algorithms and Architecture
  • Advanced Memory and Neural Computing
  • Parallel Computing and Optimization Techniques
  • Plant and animal studies
  • Plant and Fungal Species Descriptions
  • DNA and Biological Computing
  • Magnetic properties of thin films

Kawahara was recognized with the IEEE Fellow award in 2007 for contributions to low-voltage low-power random access memory circuits.

Best Publications

  • Spin-transfer torque RAM technology: Review and prospect

    Takayuki Kawahara;Kenchi Ito;Riichiro Takemura;Hideo Ohno

  • Semiconductor integrated circuit device having power reduction mechanism

    Masashi Horiguchi;Kunio Uchiyama;Kiyoo Itoh;Takeshi Sakata

  • 2Mb Spin-Transfer Torque RAM (SPRAM) with Bit-by-Bit Bidirectional Current Write and Parallelizing-Direction Current Read

    T. Kawahara;R. Takemura;K. Miura;J. Hayakawa

  • 2 Mb SPRAM (SPin-Transfer Torque RAM) With Bit-by-Bit Bi-Directional Current Write and Parallelizing-Direction Current Read

    T. Kawahara;R. Takemura;K. Miura;J. Hayakawa

  • Semiconductor integrated circuit and data processing system

    Takayuki Kawahara;Hiroshi Sato;Atsushi Nozoe;Keiichi Yoshida

  • Silicon on thin BOX: a new paradigm of the CMOSFET for low-power high-performance application featuring wide-range back-bias control

    R. Tsuchiya;M. Horiuchi;S. Kimura;M. Yamaoka

  • Low-power embedded SRAM modules with expanded margins for writing

    M. Yamaoka;N. Maeda;Y. Shinozaki;Y. Shimazaki

  • A 32-Mb SPRAM With 2T1R Memory Cell, Localized Bi-Directional Write Driver and '1'/'0' Dual-Array Equalized Reference Scheme

    Riichiro Takemura;Takayuki Kawahara;Katsuya Miura;Hiroyuki Yamamoto

  • Review and future prospects of low-voltage RAM circuits

    Y. Nakagome;M. Horiguchi;T. Kawahara;K. Itoh

  • Semiconductor device incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditions

    Takao Watanabe;Ryoichi Hori;Goro Kitsukawa;Yoshiki Kawajiri

  • Semiconductor circuit with low power consumption having emitter-coupled logic or differential amplifier

    Goro Kitsukawa;Kazumasa Yanagisawa;Takayuki Kawahara;Ryoichi Hori

  • Low power SRAM menu for SOC application using Yin-Yang-feedback memory cell technology

    M. Yamaoka;K. Osada;R. Tsuchiya;M. Horiuchi

  • Dynamic RAM and information processing system using the same

    Masayuki Nakamura;Takayuki Kawahara;Kazuhiko Kajigaya;Kazuyoshi Oshima

  • A multi-level-cell spin-transfer torque memory with series-stacked magnetotunnel junctions

    T. Ishigaki;T. Kawahara;R. Takemura;K. Ono

  • Semiconductor device and semiconductor integrated circuit using the same

    Takayuki Kawahara;Masanao Yamaoka

  • 90-nm process-variation adaptive embedded SRAM modules with power-line-floating write technique

    M. Yamaoka;N. Maeda;Y. Shinozaki;Y. Shimazaki

  • Electric-energy generation using variable-capacitive resonator for power-free LSI: efficiency analysis and fundamental experiment

    Masayuki Miyazaki;Hidetoshi Tanaka;Goichi Ono;Tomohiro Nagano

  • Scalable Spin-Transfer Torque RAM Technology for Normally-Off Computing

    Takayuki Kawahara

  • Subthreshold current reduction for decoded-driver by self-reverse biasing (DRAMs)

    T. Kawahara;M. Horiguchi;Y. Kawajiri;G. Kitsukawa

  • A 512kB Embedded Phase Change Memory with 416kB/s Write Throughput at 100μA Cell Write Current

    S. Hanzawa;N. Kitai;K. Osada;A. Kotabe

  • Phase change RAM operated with 1.5-V CMOS as low cost embedded memory

    K. Osada;T. Kawahara;R. Takemura;N. Kitai

Frequent Co-Authors

Kiyoo Itoh
Kiyoo Itoh Hitachi (Japan)
Hideo Ohno
Hideo Ohno Tohoku University
Masashi Horiguchi
Masashi Horiguchi Hitachi (Japan)
Shoji Ikeda
Shoji Ikeda Tohoku University
Fumihiro Matsukura
Fumihiro Matsukura Tohoku University
Yoshihiko Tsumura
Yoshihiko Tsumura University of Tsukuba
Tokuo Kure
Tokuo Kure Hitachi (Japan)
Shinichiro Kimura
Shinichiro Kimura Hitachi (Japan)
Yoshihisa Suyama
Yoshihisa Suyama Tohoku University
Takashi Gojobori
Takashi Gojobori King Abdullah University of Science and Technology

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