The bibliometric data used to calculate citation-based metrics for the ranking were collected on January 12, 2026. A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a refined metric that only includes publications and citation counts relevant to the examined discipline. This approach ensures that the analysis focuses specifically on contributions within Engineering and Technology, providing a discipline-centric evaluation of research impact.
Scope of Research and Ranking Criteria
For this edition, a total of 279,971 scientist profiles were analyzed across all scientific disciplines, with a focused evaluation of 109 scientists identified within the field of Engineering and Technology. Qualification for inclusion in the ranking required a minimum D-index of 30 and that a majority of an individual’s tier publications be concentrated in Engineering and Technology.
In addition to bibliometric performance, scientists’ awards and notable achievements within the Engineering and Technology domain were also considered as supplementary indicators of excellence. The D-index threshold for top researcher consideration is dynamically set in increments of 10, relative to the estimated total number of scholars in each discipline. This methodology ensures that the top 1% of leading experts in each field are captured for the ranking. Moreover, to maintain the relevance of the discipline-specific metric, only researchers with a D-index within 30% or less proximity to their general H-index were considered, maintaining consistency between general and discipline-focused scholarly impact.
Additional Verification Practices
Recognizing that raw bibliometric data alone cannot fully encapsulate a scholar’s contributions, the Research.com team undertook extensive manual verification of all scientist profiles. Each profile was carefully cross-referenced against publications indexed in a wide array of reputable sources to validate authenticity and relevance.
While the number of publications in prestigious journals and conference proceedings does not directly influence a scientist’s ranking position, it is regarded as an important secondary signal reflecting a researcher’s prominence and substantive contribution within Engineering and Technology.
The ranking itself is strictly established using the D-index derived from extensive bibliometric information aggregated primarily from OpenAlex and CrossRef. These databases represent the most extensive and reliable recognized sources of publication and citation data currently available to the scientific community.
For a detailed breakdown of the data collection, metric calculations, and methodological safeguards, we invite readers to review our methodology page.
The Research.com Agenda
At Research.com, our mission is to motivate researchers, companies, and policymakers worldwide to explore the trajectory of leading scientific experts. By delineating the top contributors in specific areas of study across countries and institutions, we provide an authoritative resource that facilitates recognition and collaboration within the scientific ecosystem.
This ranking reflects our commitment to meticulous and transparent evaluation processes, aimed at supporting the global community’s understanding of who the foremost experts in Engineering and Technology are—and where their innovative research is heading.
