The bibliometric data used to calculate the citation-based metrics underlying the ranking were collected on January 12, 2026. A scientist’s position within the ranking is determined exclusively by their D-index (Discipline H-index), a metric that considers only those published papers and citation counts directly related to the examined discipline of Engineering and Technology, thereby providing a focused and accurate measure of scholarly impact within the field.
Scope and Eligibility Criteria
The evaluation for this edition involved the examination of 279,971 scientist profiles drawn from diverse bibliometric data sources covering all academic disciplines. Within this, 112 scientists specializing in Engineering and Technology were specifically analyzed. To qualify for inclusion in the ranking, a scientist’s D-index was required to be at least 30, reflecting a significant and sustained contribution to research in Engineering and Technology. Additionally, a majority of the scientist’s tier publications were required to fall within this discipline.
Beyond bibliometric thresholds, consideration was also given to the scientist’s recognized awards and achievements within the Engineering and Technology domain, further reinforcing the relevance and excellence of those featured.
The D-index threshold for top researchers is adjusted in increments of 10 based on the estimated total number of scholars within each discipline, while ensuring that the ranking consistently includes the top 1% of leading experts. Furthermore, a critical quality control measure mandates that the proximity between a scientist’s general H-index and their discipline-specific D-index must be 30% or less, safeguarding the specificity and relevance of the ranking.
Verification and Methodological Rigor
The team behind this ranking fully recognizes that raw bibliometric data alone cannot serve as an absolute measure of scholarly output or impact. Accordingly, all scientist profiles included were manually verified and rigorously cross-correlated against publications listed in a wide spectrum of trustworthy and authoritative sources, enhancing the accuracy and reliability of the final list.
Although not a direct factor influencing ranking placement, the volume of papers published in prominent journals and conference proceedings is acknowledged as a valuable secondary indicator of a scientist’s contributions within their specific area of study.
Ultimately, the position of each researcher in the ranking was established using their D-index as calculated from data sourced primarily from OpenAlex and CrossRef. These databases remain the most authoritative and widely utilized bibliometric platforms globally.
For a detailed explanation of the intricate methodology applied in assembling this ranking, readers are invited to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire researchers, academic institutions, companies, and policy makers worldwide to understand the directions in which leading scientists are advancing. By providing a transparent and meticulously curated ranking, we offer the global scientific community a reliable resource to identify top experts in specific areas of research, across different countries, or within individual institutions.
Through this effort, we aim to foster collaboration, recognition, and informed decision-making in the pursuit of scientific excellence and innovation, ultimately contributing to the advancement of knowledge worldwide.
