The bibliometric data utilized to construct the citation-based metrics underpinning the ranking was gathered on January 12, 2026. A scientist’s position in this ranking is determined by their D-index (Discipline H-index), a refined metric that considers only the papers and citation counts relevant to the examined discipline — Engineering and Technology in this case — thus providing a more focused and discipline-specific evaluation of academic impact.
Scope and Criteria of the Ranking
This ranking evaluated a total of 279,971 scientist profiles extracted from various bibliometric data repositories spanning all scientific disciplines. Among these, 85 scientists were identified within the field of Engineering and Technology.
To qualify for inclusion, scientists were required to meet specific benchmarks: their D-index had to be at least 30, and the majority of their tier publications had to be within the Engineering and Technology domain. Furthermore, recognition of awards and achievements pertinent to the field was also factored into consideration.
The threshold of the D-index for considering top researchers is adjusted in increments of 10 according to the estimated total scholars in each discipline. This methodology ensures the inclusion of the top 1% of leading experts in the field, guaranteeing that the most impactful researchers are recognized. Additionally, to maintain discipline-specific relevance, there is a proximity criterion that ensures the difference between a scientist’s general H-index and their D-index does not exceed 30%.
Verification Practices
Understanding the inherent limitations of raw bibliometric data as an absolute evaluative tool, the Research.com team has implemented a meticulous manual verification process. All scientist profiles were individually reviewed and cross-referenced against publications listed in a broad range of trustworthy scholarly sources to confirm accuracy and legitimacy.
Although not directly influencing a researcher’s position in the ranking, the quantity of papers published in prestigious journals and major conference proceedings serves as a valuable secondary indicator of a scientist’s substantive contribution to specialized research areas.
The ranking’s positions are ultimately established using the D-index values derived from data gathered from OpenAlex and CrossRef, both of which offer comprehensive and high-quality bibliometric information recognized internationally. Readers seeking further detail on the methodology are encouraged to visit our methodology page.
Research.com’s Mission and Vision
Research.com is committed to motivating researchers, organizations, and policymakers worldwide to gain a clearer understanding of where leading experts are focusing their efforts. Our mission is to provide the global scientific community with transparent, credible, and meticulously curated rankings that illuminate who the foremost specialists are within specific fields of study, geographic regions, or academic institutions.
By highlighting research excellence in Engineering and Technology—and across other disciplines—this ranking aims to foster informed decision-making, promote collaboration, and inspire innovation within academia and beyond.
