All citation-based metrics used to determine the rankings were compiled from data collected on January 12, 2026. This ensures the ranking reflects the most up-to-date scholarly impact and productivity measures. A scientist’s position in the ranking is anchored on their D-index (Discipline H-index), a refined metric that accounts exclusively for publications and citations within the specific discipline under evaluation.
Scope of Research and Eligibility Criteria
The ranking evaluates an extensive dataset consisting of 279,971 scientist profiles drawn from diverse bibliometric sources encompassing all academic disciplines. Within the Engineering and Technology domain specifically, three scientists were analytically scrutinized. To qualify for inclusion in this ranking, a scholar must have a D-index of at least 30, with the majority of their tier-level publications concentrated in Engineering and Technology.
In addition to citation metrics, scientists’ awards and recognized achievements within Engineering and Technology were factored into the evaluation process, further substantiating their standing in the field. The threshold for the D-index is dynamically set in increments of 10 relative to the estimated total number of scholars in each discipline, ensuring inclusion of the top 1% of leading researchers. Furthermore, eligibility requires that the difference between a scientist’s general H-index and their D-index does not exceed 30%, maintaining alignment of overall and discipline-specific research impact.
Verification and Methodological Rigor
Recognizing that raw bibliometric data alone cannot fully capture the scholarly contribution of researchers, the Research.com team conducted meticulous manual verification of all scientist profiles included in the ranking. This process involved cross-correlation against publications indexed in a variety of trusted and authoritative sources to ensure accuracy and reliability.
Although not a direct factor influencing ranking position, the volume of a scientist’s publications in prominent journals and conference proceedings was considered a valuable secondary indicator of their research contributions within Engineering and Technology.
The final ranking positions are determined exclusively through the D-index metric derived from data obtained from OpenAlex and CrossRef—trusted and prominent bibliometric platforms—which reinforces the ranking’s credibility and transparency.
For a detailed exposition of the methodology and protocols involved in constructing this ranking, please refer to our methodology page.
Research.com’s Mission and Purpose
Research.com is committed to fostering a transparent and objective view of global scientific leadership. Through rankings such as this, our mission is to motivate researchers, academic institutions, companies, and policymakers worldwide to monitor the trajectories of leading experts. This initiative provides the scientific community with an accessible means to identify and recognize the foremost specialists in specific disciplines, countries, and research establishments.
We strive to empower informed decision-making and promote excellence by offering a meticulously curated and credible resource that highlights outstanding scholarly achievement in Engineering and Technology and beyond.
