World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
55
Citations
10584
World Ranking
12157
National Ranking
76

Paul Wan Sia Heng publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Paul Wan Sia Heng sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 244 publications — 48th percentile

48% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Paul Wan Sia Heng D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Paul Wan Sia Heng sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 55 D-Index — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Paul Wan Sia Heng is affiliated with the National University of Singapore in Singapore. Their research spans multiple fields with a primary focus on Pharmacology, Toxicology and Pharmaceutics as well as Engineering.

Their scholarly output includes significant contributions to Pharmaceutical Science and Food Science, alongside work in Mechanical Engineering, Analytical Chemistry, and Pediatrics, Perinatology and Child Health. Their main topics of study encompass Drug Solubility and Delivery Systems, Microencapsulation and Drying Processes, Powder Metallurgy Techniques and Materials, Analytical Methods in Pharmaceuticals, Pharmaceutical Studies and Practices, Injection Molding Process and Properties, and Advanced Drug Delivery Systems.

Among the recent papers associated with Paul Wan Sia Heng are:

  • High pressure homogenization - An update on its usage and understanding (2023), published in Process Safety and Environmental Protection
  • Insights on the role of excipients and tablet matrix porosity on aspirin stability (2020), published in International Journal of Pharmaceutics
  • Ensuring Product Stability - Choosing the Right Excipients (2022), published in Journal of Pharmaceutical Sciences
  • Relative Humidity Cycling: Implications on the Stability of Moisture-Sensitive Drugs in Solid Pharmaceutical Products (2022), published in Molecular Pharmaceutics
  • Influence of the porosity of cushioning excipients on the compaction of coated multi-particulates (2020), published in European Journal of Pharmaceutics and Biopharmaceutics

Frequent coauthors of Paul Wan Sia Heng include Lai Wah Chan, Natalia Veronica, Celine Valeria Liew, Daniel Robin Thio, and Tze Ning Hiew.

Their work is regularly published in venues such as:

  • International Journal of Pharmaceutics (16 publications)
  • Molecular Pharmaceutics (4 publications)
  • European Journal of Pharmaceutics and Biopharmaceutics (4 publications)
  • Pharmaceutics (3 publications)
  • AAPS PharmSciTech (2 publications)

Best Publications

  • Alginates as a useful natural polymer for microencapsulation and therapeutic applications

    Cheong Hian Goh;Paul Wan Sia Heng;Lai Wah Chan

  • Overview of milling techniques for improving the solubility of poorly water-soluble drugs

    Zhi Hui Loh;Asim Kumar Samanta;Paul Wan Sia Heng

  • Microencapsulation of microbial cells

    Sweta Rathore;Parind Mahendrakumar Desai;Celine Valeria Liew;Lai Wah Chan

  • Evaluation of sodium alginate as drug release modifier in matrix tablets.

    Celine Valeria Liew;Lai Wah Chan;Ai Ling Ching;Paul Wan Sia Heng

  • Mechanisms of external and internal gelation and their impact on the functions of alginate as a coat and delivery system

    Lai Wah Chan;Huey Ying Lee;Paul W.S. Heng

  • Cross-linking mechanisms of calcium and zinc in production of alginate microspheres.

    L.W Chan;Y Jin;P.W.S Heng

  • Evaluating proteins release from, and their interactions with, thermosensitive poly (N-isopropylacrylamide) hydrogels.

    Jing-Yi Wu;Shao-Qiong Liu;Paul Wan-Sia Heng;Yi-Yan Yang

  • Production of alginate microspheres by internal gelation using an emulsification method.

    L.W Chan;H.Y Lee;P.W.S Heng

  • Effect of oil loading on microspheres produced by spray drying.

    L. H. Tan;L. W. Chan;P. W. S. Heng

  • Design of controlled-release solid dosage forms of alginate and chitosan using microwave.

    Tin Wui Wong;Lai Wah Chan;Shyan Bin Kho;Paul Wan Sia Heng

  • Investigation of the influence of mean HPMC particle size and number of polymer particles on the release of aspirin from swellable hydrophilic matrix tablets.

    Paul Wan Sia Heng;Lai Wah Chan;Michael G Easterbrook;Xiaoman Li

  • Drug encapsulation in alginate microspheres by emulsification

    L. S. C. Wan;P. W. S. Heng;L. W. Chan

  • Relationship Between Swelling and Drug Release in a Hydrophilic Matrix

    Lucy S. C. Wan;Paul W. S. Heng;L. F. Wong

  • Relationship between polymer viscosity and drug release from a matrix system.

    Lucy Wan Sai Cheong;Paul Wan Sia Heng;Lee Fun Wong

  • Improved formulation of photosensitizer chlorin e6 polyvinylpyrrolidone for fluorescence diagnostic imaging and photodynamic therapy of human cancer

    William Wei Lim Chin;Paul Wan Sia Heng;Patricia Soo Ping Thong;Ramaswamy Bhuvaneswari

  • Coating of multiparticulates for sustained release

    Elaine S. K. Tang;L. W. Chan;Paul W. S. Heng

  • In-line quantification of micronized drug and excipients in tablets by near infrared (NIR) spectroscopy: Real time monitoring of tabletting process.

    Atul D. Karande;Paul Wan Sia Heng;Celine Valeria Liew

  • Effects of aldehydes and methods of cross-linking on properties of calcium alginate microspheres prepared by emulsification.

    Lai Wah Chan;Paul W.S. Heng

  • The effect of hydroxypropylmethylcellulose on water penetration into a matrix system

    L.S.C. Wan;P.W.S. Heng;L.F. Wong

  • Matrix swelling: A simple model describing extent of swelling of HPMC matrices

    Lucy Sai Cheong Wan;Paul Wan Sia Heng;Lee Fun Wong

  • Controlled release drug delivery systems.

    Paul W. S. Heng

Frequent Co-Authors

William W. Chin
William W. Chin Harvard Medical School
Reginald B. H. Tan
Reginald B. H. Tan National University of Singapore
Yi Yan Yang
Yi Yan Yang Agency for Science, Technology and Research
Changquan Calvin Sun
Changquan Calvin Sun University of Minnesota
Steven T. Wereley
Steven T. Wereley Purdue University West Lafayette
Siling Wang
Siling Wang Shenyang Pharmaceutical University
Zexiang Shen
Zexiang Shen Nanyang Technological University
Eng Seng Chan
Eng Seng Chan Monash University Malaysia
Paul C. Ho
Paul C. Ho National University of Singapore
Peter York
Peter York University of Bradford

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