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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 68 4872 4715 1503 1497 261 16115

Vellaisamy A. L. Roy publications per year

The chart shows the history of publications by Vellaisamy A. L. Roy between 2002 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Vellaisamy A. L. Roy published across 24 years, from 2002 to 2025, averaging 14.7 papers a year. Output peaked at 29 publications in 2023. 48 of the 353 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 2002 to 2025. Vertical axis: number of publications, 0 to 29. Peak 29 publications in 2023. 2002: 1 publication 2003: 2 publications 2004: 7 publications 2005: 3 publications 2006: 2 publications 2007: 5 publications 2008: 12 publications 2009: 6 publications 2010: 8 publications 2011: 9 publications 2012: 13 publications 2013: 17 publications 2014: 19 publications 2015: 21 publications 2016: 15 publications 2017: 17 publications 2018: 28 publications 2019: 25 publications 2020: 18 publications 2021: 23 publications 2022: 25 publications 2023: 29 publications 2024: 19 publications 2025: 29 publications
2002 2025

353 publications in total across all disciplines

View publications per year as a table
Vellaisamy A. L. Roy: publications per year, 2002 to 2025
Year Publications
2002 1
2003 2
2004 7
2005 3
2006 2
2007 5
2008 12
2009 6
2010 8
2011 9
2012 13
2013 17
2014 19
2015 21
2016 15
2017 17
2018 28
2019 25
2020 18
2021 23
2022 25
2023 29
2024 19
2025 29
Total 353
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Vellaisamy A. L. Roy publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Vellaisamy A. L. Roy sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 57 bars. Horizontal axis: publications, 50–69 to 1,163+. Vertical axis: number of scientists, 0 to 891. Most scientists, 891, have 190–209 publications. The last bar groups every scientist with 1,163 publications or more. The highlighted bar, 250–269 publications, is where this scientist sits. 50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50–69 publications 1,163+

This scientist: 261 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

View publications distribution as a table
Number of Materials Science scientists by publication count, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
Publications Scientists This scientist
50–69 28
70–89 152
90–109 356
110–129 487
130–149 723
150–169 835
170–189 850
190–209 891
210–229 862
230–249 766
250–269 726 261
270–289 665
290–309 593
310–329 537
330–349 477
350–369 440
370–389 356
390–409 321
410–429 256
430–449 246
450–469 216
470–489 212
490–509 174
510–529 194
530–549 162
550–569 131
570–589 111
590–609 103
610–629 99
630–649 77
650–669 92
670–689 56
690–709 53
710–729 53
730–749 38
750–769 52
770–789 43
790–809 38
810–829 34
830–849 25
850–869 18
870–889 20
890–909 24
910–929 27
930–949 20
950–969 17
970–989 10
990–1,009 16
1,010–1,029 13
1,030–1,049 12
1,050–1,069 9
1,070–1,089 8
1,090–1,109 7
1,110–1,129 9
1,130–1,149 2
1,150–1,162 5
1,163+ 100
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Vellaisamy A. L. Roy D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Vellaisamy A. L. Roy sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 64 bars. Horizontal axis: D-Index, 40–41 to 165+. Vertical axis: number of scientists, 0 to 667. Most scientists, 667, have 52–53 D-Index. The last bar groups every scientist with 165 D-Index or more. The highlighted bar, 68–69 D-Index, is where this scientist sits. 40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40–41 D-Index 165+

This scientist: 68 D-Index — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

View D-Index distribution as a table
Number of Materials Science scientists by D-index, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
D-Index Scientists This scientist
40–41 211
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667
54–55 621
56–57 597
58–59 610
60–61 587
62–63 606
64–65 533
66–67 490
68–69 469 68
70–71 378
72–73 421
74–75 359
76–77 323
78–79 299
80–81 230
82–83 210
84–85 195
86–87 203
88–89 175
90–91 175
92–93 142
94–95 121
96–97 117
98–99 107
100–101 88
102–103 85
104–105 68
106–107 62
108–109 57
110–111 45
112–113 49
114–115 50
116–117 34
118–119 38
120–121 37
122–123 29
124–125 28
126–127 24
128–129 33
130–131 28
132–133 21
134–135 20
136–137 23
138–139 17
140–141 12
142–143 17
144–145 21
146–147 13
148–149 11
150–151 14
152–153 13
154–155 9
156–157 10
158–159 7
160–161 4
162–163 4
164 3
165+ 98
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Overview

Vellaisamy A. L. Roy is affiliated with Hong Kong Metropolitan University in China. Their research primarily spans the fields of Engineering and Materials Science, with significant contributions in subfields such as Materials Chemistry, Electrical and Electronic Engineering, Biomedical Engineering, Polymers and Plastics, and Renewable Energy, Sustainability and the Environment.

The researcher has focused on topics including Advanced Memory and Neural Computing, Advanced Sensor and Energy Harvesting Materials, Advanced Thermoelectric Materials and Devices, Conducting polymers and applications, Thermal properties of materials, Chalcogenide Semiconductor Thin Films, and Perovskite Materials and Applications.

Among their recent papers are:

  • Carbon based materials: a review of adsorbents for inorganic and organic compounds, 2021, Materials Advances
  • Emerging MXene-Based Flexible Tactile Sensors for Health Monitoring and Haptic Perception, 2023, Small
  • Self-Powered Implantable Medical Devices: Photovoltaic Energy Harvesting Review, 2020, Advanced Healthcare Materials
  • Surface decoration of Halloysite nanotubes with POSS for fire-safe thermoplastic polyurethane nanocomposites, 2021, Journal of Material Science and Technology
  • Nanowires for UV-vis-IR Optoelectronic Synaptic Devices, 2022, Advanced Functional Materials

The venues in which this researcher frequently publishes include:

  • Advanced Functional Materials (6 publications)
  • Small (5 publications)
  • Advanced Science (5 publications)
  • Journal of Alloys and Compounds (5 publications)
  • Advanced Electronic Materials (5 publications)

Frequent collaborators of Vellaisamy A. L. Roy consist of Vaithinathan Karthikeyan, Wen J. Li, Su-Ting Han, Ye Zhou, and Vaskuri C. S. Theja, each contributing to multiple joint works.

Best Publications

  • An Overview of the Development of Flexible Sensors.

    Su-Ting Han;Haiyan Peng;Qijun Sun;Shishir Venkatesh

  • Photoluminescence and Electron Paramagnetic Resonance of ZnO Tetrapod Structures

    A. B. Djurišić;W. C. H. Choy;V. A. L. Roy;Y. H. Leung

  • Recent progress in magnetic iron oxide–semiconductor composite nanomaterials as promising photocatalysts

    Wei Wu;Wei Wu;Changzhong Jiang;Vellaisamy A. L. Roy

  • Towards the development of flexible non-volatile memories.

    Su-Ting Han;Ye Zhou;V. A. L. Roy

  • Carbon based materials: a review of adsorbents for inorganic and organic compounds

    Mohammad Mehdi Sabzehmeidani;Sahar Mahnaee;Mehrorang Ghaedi;Hadi Heidari

  • Designed synthesis and surface engineering strategies of magnetic iron oxide nanoparticles for biomedical applications

    Wei Wu;Wei Wu;Chang Zhong Jiang;Vellaisamy A. L. Roy

  • Luminescent and structural properties of ZnO nanorods prepared under different conditions

    V. A. L. Roy;A. B. Djurišić;W. K. Chan;J. Gao

  • Synergies of Electrochemical Metallization and Valance Change in All-Inorganic Perovskite Quantum Dots for Resistive Switching

    Yan Wang;Ziyu Lv;Qiufan Liao;Haiquan Shan

  • From biomaterial-based data storage to bio-inspired artificial synapse

    Ziyu Lv;Ye Zhou;Su-Ting Han;V.A.L. Roy

  • Supramolecular Polymers and Chromonic Mesophases Self‐Organized from Phosphorescent Cationic Organoplatinum(II) Complexes in Water

    Wei Lu;Yong Chen;V. A. L. Roy;V. A. L. Roy;Stephen Sin-Yin Chui

  • Magnetic properties of Mn doped ZnO tetrapod structures

    V. A. L. Roy;A. B. Djurišić;H. Liu;X. X. Zhang

  • Arrays of ZnO/ZnxCd1- xse nanocables: Band gap engineering and photovoltaic applications

    Jun Xu;Xia Yang;Hongkang Wang;Xue Chen

  • Mimicking Neuroplasticity in a Hybrid Biopolymer Transistor by Dual Modes Modulation

    Ziyu Lv;Ziyu Lv;Meng Chen;Fangsheng Qian;Vellaisamy A. L. Roy

  • Fingertip‐skin‐inspired highly sensitive and multifunctional sensor with hierarchically structured conductive graphite/polydimethylsiloxane foams

    Qi-Jun Sun;Xin-Hua Zhao;Ye Zhou;Chi-Chung Yeung

  • Layer-by-layer-assembled reduced graphene oxide/gold nanoparticle hybrid double-floating-gate structure for low-voltage flexible flash memory.

    Su-Ting Han;Ye Zhou;Chundong Wang;Lifang He

  • Self-Powered Implantable Medical Devices: Photovoltaic Energy Harvesting Review.

    Jinwei Zhao;Rami Ghannam;Kaung Oo Htet;Yuchi Liu

  • Efficient White Organic Light-Emitting Devices Based on Phosphorescent Platinum(II)/Fluorescent Dual-Emitting Layers

    Bei-Ping Yan;Cecil C. C. Cheung;Steven C. F. Kui;Hai-Feng Xiang

  • Recent Advances of Flexible Data Storage Devices Based on Organic Nanoscaled Materials.

    Li Zhou;Jingyu Mao;Yi Ren;Su-Ting Han

  • A one-pot route to the synthesis of alloyed Cu/Ag bimetallic nanoparticles with different mass ratios for catalytic reduction of 4-nitrophenol

    Wei Wu;Wei Wu;Mei Lei;Shuanglei Yang;Li Zhou

  • Low-Cost, Disposable, Flexible and Highly Reproducible Screen Printed SERS Substrates for the Detection of Various Chemicals

    Wei Wu;Li Liu;Zhigao Dai;Juhua Liu

  • Semiconducting and Electroluminescent Nanowires Self-Assembled from Organoplatinum(II) Complexes†

    Mai-Yan Yuen;V. A. L. Roy;Wei Lu;Steven C. F. Kui

  • An upconverted photonic nonvolatile memory

    Ye Zhou;Su-Ting Han;Xian Chen;Feng Wang

Frequent Co-Authors

Ye Zhou
Ye Zhou Shenzhen University
Su-Ting Han
Su-Ting Han Shenzhen University
Zong-Xiang Xu
Zong-Xiang Xu Southern University of Science and Technology
Chi-Ming Che
Chi-Ming Che University of Hong Kong
Chun-Sing Lee
Chun-Sing Lee City University of Hong Kong
Wei Wu
Wei Wu Wuhan University
Robert K.Y. Li
Robert K.Y. Li City University of Hong Kong
Prashant Sonar
Prashant Sonar Queensland University of Technology
Xianfeng Chen
Xianfeng Chen University of Edinburgh
Changzhong Jiang
Changzhong Jiang Hunan University

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