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D-Index & Metrics

Engineering and Technology

D-Index
45
Citations
9609
World Ranking
5392
National Ranking
217

John A. Rowlands 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 John A. Rowlands sits on this spectrum.

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 publications 804+

This scientist: 288 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

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

John A. Rowlands 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 John A. Rowlands sits on this spectrum.

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: 45 D-Index — 46th percentile

46% of scientists in this discipline score the same or lower.

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

Overview

John A. Rowlands is affiliated with the Sunnybrook Health Science Centre in Canada. Their research work focuses on several interconnected fields within physics and engineering, including Radiation, Electrical and Electronic Engineering, and Atomic and Molecular Physics, and Optics.

The main fields of study for Rowlands encompass:

  • Physics and Astronomy
  • Engineering

Within these broader fields, they have contributed to specific subfields such as:

  • Electrical and Electronic Engineering
  • Radiation
  • Atomic and Molecular Physics, and Optics

The primary topics of research explored by Rowlands feature aspects related to semiconductor and detector technologies as well as optics, including:

  • Advanced Semiconductor Detectors and Materials
  • Radiation Detection and Scintillator Technologies
  • Photorefractive and Nonlinear Optics

Rowlands's publication record includes recent research published in the "Journal of Materials Science Materials in Electronics." One notable paper is titled "Differences between transient photoconductivity in a-Se sandwich (bulk) and co-planar (interface) structures", published in 2020.

Frequent collaboration is evident with co-authors such as:

  • David M. Hunter

Their work has primarily appeared in the following publication venue:

  • Journal of Materials Science Materials in Electronics

There are no awards or book publications listed for John A. Rowlands. The data indicates that they remain active in their research pursuits.

Best Publications

  • X-ray detectors for digital radiography

    M J Yaffe;J A Rowlands

  • Amorphous and Polycrystalline Photoconductors for Direct Conversion Flat Panel X-Ray Image Sensors

    Safa O. Kasap;Joel B. Frey;George Belev;Olivier Tousignant

  • X-ray imaging using amorphous selenium: Feasibility of a flat panel self-scanned detector for digital radiology

    Wei Zhao;J. A. Rowlands

  • Flat Panel Detectors for Digital Radiography

    John Yorkston;John A. Rowlands

  • Amorphous silicon active pixel sensor readout circuit for digital imaging

    K.S. Karim;A. Nathan;J.A. Rowlands

  • Amorphous Semiconductors Usher in Digital X‐Ray Imaging

    John Rowlands;Safa Kasap

  • Digital radiology using active matrix readout of amorphous selenium: Theoretical analysis of detective quantum efficiency

    Wei Zhao;J. A. Rowlands

  • Direct-conversion flat-panel X-ray image sensors for digital radiography

    S.O. Kasap;J.A. Rowlands

  • Amorphous selenium and its alloys from early xeroradiography to high resolution X‐ray image detectors and ultrasensitive imaging tubes

    Safa Kasap;Joel B. Frey;George Belev;Olivier Tousignant

  • Review X-ray photoconductors and stabilized a-Se for direct conversion digital flat-panel X-ray image-detectors

    S. O. Kasap;J. A. Rowlands

  • Imaging performance of amorphous selenium based flat-panel detectors for digital mammography: characterization of a small area prototype detector.

    Wei Zhao;W. G. Ji;Anne Debrie;J. A. Rowlands

  • Digital radiology using active matrix readout of amorphous selenium: construction and evaluation of a prototype real-time detector.

    Wei Zhao;Ira Blevis;Stephen Germann;J. A. Rowlands

  • Direct-conversion flat-panel X-ray image detectors

    S.O. Kasap;J.A. Rowlands

  • X-RAY PHOTOGENERATION IN AMORPHOUS SELENIUM : GEMINATE VERSUS COLUMNAR RECOMBINATION

    W. Que;J. A. Rowlands

  • Three-TFT image sensor for real-time digital X-ray imaging

    N. Safavian;G.R. Chaji;A. Nathan;J.A. Rowlands

  • TFT active image sensor with current-mode readout circuit for digital x-ray fluoroscopy

    Nader Safavian;G. R. Chaji;A. Nathan;J. A. Rowlands

  • Evaluation of the imaging properties of an amorphous selenium-based flat panel detector for digital fluoroscopy

    D. C. Hunt;O. Tousignant;J. A. Rowlands

  • Recent advances in X-ray photoconductors for direct conversion X-ray image detectors

    S.O. Kasap;M. Zahangir Kabir;J.A. Rowlands

  • 3-TFT active pixel sensor with correlated double sampling readout circuit for real-time medical x-ray imaging

    N. Safavian;G.R. Chaji;M.Z. Kabir;A. Nathan

  • A truly hybrid interventional MR/X-ray system: feasibility demonstration.

    Rebecca Fahrig;Kim Butts;John A. Rowlands;Rowland Saunders

  • X-ray imaging using amorphous selenium: a photoinduced discharge readout method for digital mammography.

    J. A. Rowlands;D. M. Hunter;N. Araj

Frequent Co-Authors

Arokia Nathan
Arokia Nathan University of Cambridge
Martin J. Yaffe
Martin J. Yaffe University of Toronto
Rebecca Fahrig
Rebecca Fahrig Siemens Healthcare (United States)
Daniel J. Dumont
Daniel J. Dumont University of Toronto
Kullervo Hynynen
Kullervo Hynynen Sunnybrook Health Science Centre
Stephen E. Fremes
Stephen E. Fremes University of Toronto
Norbert J. Pelc
Norbert J. Pelc Stanford University
Peyman Servati
Peyman Servati University of British Columbia
Robert M. Bennett
Robert M. Bennett Oregon Health & Science University
Kim Butts Pauly
Kim Butts Pauly Stanford University

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