An institution’s position in this ranking is determined by the aggregate D-index (Discipline H-index) of all scholars affiliated with that institution whose principal publication area is Materials Science. The D-index is a discipline-specific metric, relying exclusively on publications and citation data pertinent to the field of Materials Science.
Scope of Research and Inclusion Criteria
The ranking process incorporated a comprehensive review of 279,971 scientist profiles sourced from a variety of bibliometric databases. Of these, 37,821 scientists specializing in Materials Science were subjected to detailed analysis.
To qualify, scientists had to demonstrate a D-index of at least 40, and the majority of their high-impact publications were required to be in the area of Materials Science. Additionally, recognitions such as awards and other achievements in the field of Materials Science were taken into consideration, further ensuring that contributions to the discipline were holistically evaluated.
The D-index threshold incrementally increased by 10 depending on the total number of scholars within each discipline, with a commitment to ensure that the top 1% of leading scientists were reflected in the final ranking. Furthermore, only those scientists whose general H-index differed by less than 30% from their D-index were considered, ensuring discipline-specific excellence. Awards and professional achievements within the field were also integral in the assessment process.
Verification and Quality Assurance Practices
The team responsible for the ranking fully acknowledges that raw bibliometric data, while invaluable, is insufficient as a sole measure of scholarly excellence. Accordingly, every scientist profile included in the ranking was subjected to manual verification and cross-referenced with publications drawn from an extensive array of highly trustworthy sources.
While the total number of papers published in renowned journals and conference proceedings does not directly influence a researcher's ranking position, such metrics provide a significant supplemental indicator of a scientist’s impact and ongoing contributions to the advancement of Materials Science.
The principal determinant of ranking is each researcher’s H-index, as meticulously gathered from OpenAlex and CrossRef—the two leading bibliometric databases recognized for their accuracy and comprehensiveness by the global research community.
Researchers and stakeholders seeking further detail are encouraged to consult our methodology page.
Research.com’s Mission and Purpose
Research.com’s mission is to inspire scientists, entrepreneurs, and policy-makers worldwide by highlighting emerging trends and identifying where top experts are concentrating their efforts. Our rankings provide a resource for the research community to identify outstanding leaders and promising institutions within specific disciplines, countries, and universities. Through this initiative, we strive to foster collaboration, recognize pioneering work, and facilitate informed decision-making within the scientific ecosystem.
Key Results: Highlights of the 2024 Ranking
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Top 3 Italian Institutions for Leading Scientists in Materials Science:
- Polytechnic University of Turin – 25 leading scientists
- University of Padua – 18 leading scientists
- University of Bologna – 13 leading scientists
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Most Prominent Global Institutions Represented:
- Georgia Institute of Technology
- École Polytechnique Fédérale de Lausanne
- MIT
- Harvard University
- Stanford University
- Drexel University
- China University of Geosciences
- Rice University
- City University of Hong Kong
- Tsinghua University
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World’s Top Material Scientists:
- Professor Zhong Lin Wang (Georgia Institute of Technology): D-index 315
- Michael Grätzel (École Polytechnique Fédérale de Lausanne): D-index 292
- Robert Langer (MIT): D-index 288
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Aggregated Statistics for Top Institutions:
- The average total D-index for the top 5% of universities is 3,826, compared to an average of 524 for all 1,282 ranked institutions.
- The average number of published articles in Materials Science by scientists affiliated with the top 5% of scholars is 17,885, versus 2,500 for all institutions.
- Average citations for researchers in the top 1% of universities stand at 2,279,971, compared to 279,971 for the entire cohort of institutions.
Taken together, these results showcase the remarkable concentration of talent and scholarly output within the leading Italian universities in Materials Science, further bolstered by the presence of globally recognized experts who shape the direction and reputation of the field on a worldwide scale.
