The citation-based metrics used to generate the ranking were compiled on January 12, 2026. A key metric employed in the ranking methodology is the D-index (Discipline H-index), which evaluates a researcher’s impact exclusively within the defined discipline. This ensures that only papers and related citation data pertinent to Materials Science are considered, thereby providing a discipline-specific measure of research influence and productivity.
Scope of Research and Qualification Criteria
The scope of the ranking covers an extensive set of researcher profiles collected from diverse bibliometric sources. In total, 279,971 scientist profiles spanning all scientific disciplines were examined, with a focused subset of 2,944 scientists identified specifically within Materials Science.
To qualify for inclusion in the ranking, a scientist must have a D-index of at least 40, reflecting significant scholarly contributions in Materials Science. Additionally, the majority of their highest-impact publications (tier publications) must be within the Materials Science domain. Awards and recognized achievements in the field are also factored into qualification assessments.
The threshold for the D-index is adapted in increments of 10 based on the estimated total number of researchers in each discipline, ensuring that the top 1% of leading scholars are represented. Furthermore, to maintain consistency and focus, a proximity criterion limits the difference between a scientist’s overall H-index and their D-index to 30% or less.
Verification and Quality Assurance Practices
Recognizing the limitations of raw bibliometric data as an absolute measure of scholarly impact, the Research.com team undertook rigorous manual verification of all scientist profiles considered for the ranking. This included cross-referencing publications and citation records against a broad spectrum of trustworthy sources to validate accuracy and reliability.
While the number of publications in prestigious journals and conference proceedings is not directly used to determine ranking positions, it serves as an important secondary indicator of a researcher’s contribution and influence within their scientific area.
Ultimately, a researcher’s ranking position is determined by their rigorously calculated D-index based on data from OpenAlex and CrossRef. These sources provide the most complete and trusted bibliometric data currently accessible to the research community. For a detailed explanation of the methodology, please visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission in producing these rankings is to foster an informed scientific ecosystem by motivating researchers, corporations, and policymakers worldwide to attentively observe the trajectories of leading experts. We aim to create transparent pathways for the global academic community to recognize and connect with the foremost experts in specific fields, within countries, and across diverse research institutions.
Through meticulous data collection, expert validation, and an unwavering commitment to quality, the Research.com rankings provide a credible, insightful resource that supports strategic decision-making and fosters collaborations in the advancement of scientific knowledge.
