Data Sources and Bibliometric Metrics
The 5th edition of the Research.com Best Materials Science Scientists in Egypt Ranking is primarily grounded in comprehensive bibliometric data collected from OpenAlex and CrossRef, alongside multiple other reputable data sources. These platforms provide extensive and authoritative coverage of scholarly publications and citation metrics, enabling a robust and accurate assessment of scientific contributions. The bibliometric data used for this ranking were collected on January 12, 2026, ensuring a contemporaneous and reliable snapshot of the research landscape.
A scientist’s ranking position is determined based on their D-index (Discipline H-index), a metric that isolates a researcher’s impact within a specific discipline. Unlike the general H-index, the D-index counts only papers and citations relevant to the examined field—Materials Science in this case—offering a focused measure of scholarly influence within the discipline.
Scope and Criteria of the Ranking
For the purpose of this ranking, a total of 279,971 scientist profiles across all disciplines were analyzed using diverse bibliometric data sources. From this extensive pool, 15 scientists specializing in Materials Science in Egypt were scrutinized in greater detail. To qualify for inclusion, candidates needed to fulfill stringent criteria:
- A minimum D-index of 40 within Materials Science
- A majority of their tier publications concentrated in the Materials Science discipline
- Recognition of their awards and tangible achievements within the Materials Science community
The D-index threshold for classifying leading researchers is strategically set in increments of 10 relative to the size of the scholar population estimated for each discipline. This approach ensures that the top 1% of leading experts in Materials Science are captured accurately. Additionally, there is a requirement that the disparity between a scientist’s overall H-index and their discipline-specific D-index remains within 30%, maintaining consistency and relevance in the evaluation.
Additional Verification Practices
We recognize that raw bibliometric data, while invaluable, cannot serve as an absolute measure of a researcher’s merit or impact. With this principle in mind, all scientist profiles included in the ranking were manually verified. This process involved cross-referencing publications across a broad spectrum of reputable and trustworthy academic sources to confirm the accuracy of the profiles and citation metrics.
Although the quantity of publications in leading journals and conference proceedings does not directly influence the researcher’s position in the Research.com ranking, it constitutes an important secondary indicator of their contribution to the advancement of Materials Science.
Ultimately, the position within this ranking is established strictly through each researcher’s D-index, calculated from data aggregated by OpenAlex and CrossRef — the two most prominent and widely trusted bibliometric databases accessible to the research community today. More detailed information on the comprehensive methodology supporting this ranking is available on our methodology page.
Research.com Agenda and Mission
Research.com’s mission in generating and publishing this ranking is to inspire researchers, academic institutions, industry leaders, and policymakers globally to gain insight into the trajectories of leading experts. By providing a transparent and meticulously curated view of who the foremost authorities are in specific scientific domains—whether within countries, research institutions, or disciplines—we aim to foster collaboration, encourage excellence, and support innovation across the scientific community.
This ranking stands as a testament to the rigorous and painstaking work conducted by our team to ensure that recognition is grounded in accurate, verifiable data and reflective of true scientific merit.
