Bibliometric information used to derive citation-based metrics for this ranking was meticulously collected on January 12, 2026. The ranking methodology centers on a researcher’s D-index (Discipline H-index), a refined metric that accounts exclusively for papers and citation metrics relevant to the specific discipline under examination, thereby providing a focused and accurate measure of scientific impact within Engineering and Technology.
Scope of Research and Selection Criteria
The ranking evaluates a broad spectrum of scientific activity by analyzing 279,971 scientist profiles identified from diverse bibliometric databases spanning all disciplines. Within this comprehensive dataset, 73 scientists specializing in Engineering and Technology were specifically examined.
To qualify for inclusion in the ranking, a scientist must have achieved a D-index of at least 30. Additionally, the majority of a qualifying researcher’s tier publications must fall within the field of Engineering and Technology. Beyond quantitative metrics, awards and notable achievements in this domain were also considered to reflect distinguished contributions.
The threshold for the D-index is calibrated as increments of 10, proportional to the estimated total number of scholars in each discipline, with a deliberate design to incorporate the top 1% of leading experts. Furthermore, it is essential that the proximity between a scientist’s general H-index and their D-index does not exceed 30%, ensuring alignment between overall impact and discipline-specific excellence.
Additional Verification Practices
We recognize that raw bibliometric data alone is insufficient as an absolute measure of scholarly output. Accordingly, all scientist profiles included in this ranking were manually verified and cross-referenced against publications indexed in a wide array of trustworthy sources. This rigorous verification process enhances the credibility and accuracy of the ranking results.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s ranking position, it remains a valuable secondary indicator of a scientist’s contributions within a particular scientific field.
The researcher’s D-index was calculated based on data sourced from OpenAlex and CrossRef, reinforcing the standing of these databases as pivotal tools for assessing research impact. To explore the full details of the methodology and verification procedures, please visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to motivate researchers, corporations, and policymakers worldwide to closely examine the trajectories and contributions of leading experts in their respective fields. By providing a transparent and meticulous ranking, we aim to facilitate the scientific community’s awareness of who the foremost specialists are—in specified areas of research, across countries, and within academic institutions.
This ranking exemplifies our commitment to fostering informed decision-making and collaboration across the global research ecosystem, underpinning progress through the recognition and understanding of exceptional scientific talent.
