Bibliometric data, which serve as the foundation for citation-based metrics used in this ranking, were collected as of January 12, 2026. A scientist's position within the ranking is determined by their D-index (Discipline H-index), a refined metric that considers only publications and citation counts specifically relevant to the Materials Science discipline. This approach ensures that the evaluation is focused and discipline-specific, rather than relying on general productivity metrics.
Scope of Research and Eligibility Criteria
Across all disciplines, 279,971 scientist profiles were examined from a variety of bibliometric sources to curate a comprehensive dataset. Within the Materials Science field, two scientists from Bangladesh were specifically identified and analyzed.
To qualify for inclusion in this ranking, a scientist must have a D-index of at least 40. Furthermore, the majority of their tier publications must be concentrated in Materials Science, supporting the relevance of their research contributions to the discipline. Additional considerations include the recognition of awards and notable achievements within Materials Science, adding a qualitative dimension to the quantitative metrics used.
The threshold D-index for top researchers is calibrated in increments of 10, adjusted according to the estimated total number of scholars within each discipline. This method ensures the top 1% of leading scholars are consistently represented across fields. Additionally, eligibility requires that the difference between a scientist’s overall H-index and their discipline-specific D-index does not exceed 30%, reinforcing the disciplinary focus of this ranking.
Verification Practices and Methodological Rigor
The research team behind this ranking understands the limitations of raw bibliometric data and recognizes that such data should not be used as an absolute measure of scholarly output. Accordingly, all scientist profiles underwent manual verification, including cross-correlation of publications across a broad array of trustworthy academic sources.
While these verification measures ensure data integrity, it is important to note that factors such as the number of publications in prestigious journals and conference proceedings do not directly influence the ranking position. However, they serve as valuable secondary indicators of a researcher’s impact and contribution to the field.
Ranking positions are ultimately established through the D-index metric using data consolidated from OpenAlex and CrossRef, reinforcing the ranking’s credibility through the utilization of well-established bibliometric sources.
For a more detailed explanation of the methodology used, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision Behind the Ranking
Research.com is dedicated to motivating researchers, industry leaders, and policymakers worldwide to gain insight into the trajectories of leading scientific experts. Our goal is to provide the broader scientific community with transparent, authoritative tools to identify and connect with foremost authorities across diverse fields, geographic regions, and institutions.
By delivering these discipline-focused rankings, we aim to foster collaboration, highlight excellence, and enable informed decision-making that advances the global research ecosystem.
