On January 12, 2026, we collected the relevant bibliometric data necessary for devising citation-based metrics that underpin this ranking. A scientist's position is specifically determined by their D-index (Discipline H-index), which measures impact through the lens of an examined discipline. This index only accounts for publications and citation metrics relevant to the Engineering and Technology discipline, thereby providing a focused and discipline-specific evaluation of scientific influence.
Scope of Research and Selection Criteria
The ranking process examined a total of 279,971 scientist profiles identified across a diverse array of bibliometric sources, encompassing all research disciplines globally. Within this comprehensive dataset, two thousand and seventy-eight scientists were identified as contributors within the area of Engineering and Technology specifically.
To qualify for inclusion in the ranking, a scientist’s D-index had to be at least 30, ensuring that only researchers with substantial contributions to Engineering and Technology were considered. Additionally, the majority of their top-tier publications needed to be concentrated within the Engineering and Technology field. Beyond bibliometric performance, scientists’ awards and achievements within this domain were also factored into the evaluation.
The D-index threshold for considering leading researchers is dynamically calibrated in increments of 10 based on the estimated total number of scholars within each discipline. This approach ensures that the top 1% of leading experts are consistently incorporated into the list. Moreover, to maintain disciplinary relevance, a proximity threshold requiring no more than a 30% deviation between a scientist’s general H-index and their D-index was applied.
Verification and Validation Procedures
Recognizing the inherent limitations of raw bibliometric data, the research team behind the ranking undertook careful manual verification of all scientist profiles. Published works were cross-correlated against a wide spectrum of trusted sources to maintain accuracy and credibility. This rigorous process acknowledges that quantitative metrics alone are not absolute measures of scholarly output or impact.
While the number of papers published in prominent journals and conference proceedings did not directly influence placement within the ranking, such measures serve as valuable secondary indicators of a scientist’s contribution to the field of Engineering and Technology.
The final scientist rankings were established strictly on the basis of each researcher’s D-index derived from OpenAlex and CrossRef data. These platforms remain among the most reliable and recognized bibliometric databases accessible to the international research community.
For a detailed overview of the methodology employed in this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Objectives
At Research.com, our mission is to motivate researchers, corporations, and policymakers worldwide to explore emerging trajectories among leading experts. By creating an accessible platform highlighting distinguished scientists in specific fields, countries, and institutions, we aim to foster greater awareness and connectivity within the global scientific community.
This ranking initiative reflects our ongoing commitment to deliver meticulously curated and credible insights, supporting informed decision-making and promoting excellence in research.
