Data Sources and Citation Metrics
The 5th edition of the Research.com Best Materials Science Scientists in Greece Ranking is primarily constructed using comprehensive bibliometric data aggregated from OpenAlex and CrossRef, supplemented by multiple other reputable data sources. On January 12, 2026, citation data essential for the development of the citation-based metrics were systematically collected to ensure the most current and accurate assessment possible. A scientist’s position within the ranking is determined by their Discipline H-index (D-index), a refined metric that considers only publications and citation counts pertinent to the specific discipline under review—in this case, Materials Science. This targeted approach ensures that the ranking accurately reflects expertise and impact within the discipline, rather than general scientific output.
Scope and Selection Criteria
The ranking process involved an extensive examination of 279,971 scientist profiles drawn from diverse bibliometric databases, covering all scientific disciplines. Within this broad dataset, 45 scientists specializing in Materials Science in Greece were identified for inclusion. To qualify for the ranking, a researcher was required to meet several strict criteria:
- A minimum D-index of 40, ensuring the inclusion of scholars with notable impact in the field.
- At least a majority of their tier publications needed to be concentrated in Materials Science, underscoring disciplinary relevance.
- Recognition of significant awards and achievements within Materials Science was also factored into consideration.
The threshold for the D-index is calibrated in increments of 10 relative to the estimated total number of researchers in each discipline. This adaptive thresholding guarantees that the ranking encompasses the top 1% of leading scholars, preserving the exclusivity and elite nature of the list. Additionally, candidates must exhibit a proximity of 30% or less between their general H-index and the discipline-specific D-index, maintaining a strong alignment between their overall influence and discipline-centered impact.
Verification and Validation Procedures
Recognizing that raw bibliometric data cannot serve as an absolute measure of scholarly contribution, the Research.com team undertook meticulous manual verification of all scientist profiles incorporated in the ranking. Each profile was cross-correlated against publications indexed within a broad spectrum of trustworthy academic sources to confirm accuracy and relevance. While the number of publications in prominent journals and conference proceedings was not a direct factor influencing ranking position, this information serves as an important secondary indicator of a scientist’s substantive contribution to the Materials Science community.
The final ranking positions are established using the D-index derived from data gathered through OpenAlex and CrossRef—the most authoritative and widely recognized bibliometric platforms accessible to the global research community. For detailed insights into the comprehensive methodology employed to compile this ranking, please visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission: to inspire researchers, corporations, and policymakers worldwide to gain nuanced insights into emerging leadership within scientific disciplines. By illuminating the top experts in Materials Science at the national level, Research.com provides the global scientific community with a transparent and credible resource for identifying thought leaders. This, in turn, fosters collaboration, strategic investment, and informed decision-making across academia, industry, and government institutions, thereby enriching the collective advancement of science.
