Bibliometric data utilized for devising the citation-based metrics were collected on January 12, 2026, ensuring the ranking reflects the most recent and relevant scholarly outputs. A scientist’s position within the ranking is determined by their D-index (Discipline H-index), which evaluates only papers and citation metrics pertaining to the examined discipline, thereby providing a focused measure of a researcher’s influence within their specific field.
Scope of Research and Inclusion Criteria
The ranking is based on an extensive examination of 279,971 scientist profiles compiled from diverse bibliometric sources across all disciplines. Within this cohort, 1,599 scientists specializing in Engineering and Technology were specifically identified and evaluated.
To qualify for inclusion in the ranking, a researcher must have a minimum D-index of 30 in the Engineering and Technology discipline, accompanied by a majority of tiered publications within this area. Furthermore, consideration was given to recognized awards and achievements relevant to Engineering and Technology, enhancing the robustness of the evaluation beyond bibliometrics alone.
The threshold D-index for selecting top researchers is systematically adjusted in increments of 10 relative to the estimated total number of scholars within each discipline. This methodology ensures that the ranking incorporates approximately the top 1% of leading scholars, maintaining rigorous selectivity. Additionally, a proximity criterion mandates that the difference between a scientist’s overall H-index and their discipline-specific D-index does not exceed 30%, ensuring discipline relevance and minimizing inflated general citation impact.
Additional Verification Practices
The team behind this ranking acknowledges that raw bibliometric data alone cannot serve as an absolute evaluative tool for scholarly output. Consequently, all scientist profiles underwent manual verification and were carefully cross-correlated against publications indexed in a broad range of authoritative and trustworthy sources.
While the number of papers published in prominent journals and conference proceedings does not directly influence ranking position, it serves as a valuable secondary indicator of a scientist’s research contribution within their field.
The final position in the ranking is established exclusively using each researcher’s D-index calculated from data gathered via OpenAlex and CrossRef. These databases represent the most recognized and reliable tools currently available for bibliometric assessment.
For further detailed information regarding the methodology employed, readers are encouraged to visit our methodology page.
Research.com’s Mission Behind the Ranking
Research.com’s mission in creating this ranking is to motivate the global research community, industry leaders, and policymakers to gain clear insights into where leading experts are directing their efforts. By providing a transparent and credible assessment, we enable the broader scientific community to identify and engage with top-tier experts across specific fields, countries, and institutions.
Through careful methodology and rigorous verification, this ranking aspires to contribute meaningfully to the advancement of science and technology by fostering collaboration, recognizing excellence, and facilitating informed decision-making on both institutional and national levels.
