Data Sources and Bibliometric Metrics
The 5th edition of the Research.com Best Materials Science Scientists in Sweden Ranking is constructed primarily from data aggregated from OpenAlex and CrossRef, supplemented by multiple other reliable bibliometric data sources. The bibliometric data used to derive citation-based metrics were collected on January 12, 2026. The ranking methodology centers on the use of each scientist's D-index (Discipline H-index), a refined metric that accounts exclusively for publication and citation records within the examined discipline — in this case, Materials Science. This focused approach ensures that the ranking reflects contributions specifically relevant to the materials science research community.
Scope of Research and Eligibility Criteria
The ranking process began with an extensive examination of 279,971 scientist profiles identified across a broad range of bibliometric datasets spanning all academic disciplines. Within this corpus, 134 scientists with a clear focus on Materials Science were isolated for the ranking. To qualify for inclusion, a scientist’s D-index within the discipline had to be at least 40, with the bulk of their tier publications demonstrably anchored in Materials Science. Additionally, consideration was given to scientists’ prominent awards and achievements pertinent to the field.
The D-index threshold is dynamically set in increments of 10 depending on the estimated total number of researchers within each discipline. This approach guarantees inclusion of the top 1% of leading scholars in each respective field, while also ensuring that the D-index and the general H-index of any ranked scientist maintain a proximity of 30% or less. This balance effectively filters for researchers with demonstrable expertise and impactful contributions to Materials Science.
Additional Verification Practices
Recognizing the limitations of raw bibliometric data, the Research.com team undertook comprehensive manual verification of all scientist profiles included in the ranking. Profiles were painstakingly cross-correlated against publications verified in a wide array of trustworthy sources to enhance accuracy and reliability. While the number of papers published in prominent journals and proceedings was not a direct factor affecting a researcher’s position, it was considered an important secondary signal reflecting the scientist’s active engagement and contribution to the discipline.
It is important to reiterate that the position in this ranking is fundamentally determined using the D-index metric, derived from data sourced primarily from OpenAlex and CrossRef — two of the most prominent and widely respected bibliometric repositories available to the scholarly community. For detailed information regarding the ranking methodology, the reader is encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to provide a transparent and methodologically rigorous resource that motivates researchers, corporations, and policymakers worldwide to explore the trajectories and innovations of leading experts. We aim to facilitate a broader understanding within the scientific community about who the foremost authorities are in specific areas of study, across countries, and within academic institutions. By curating such rankings, we strive to foster collaboration, knowledge dissemination, and informed decision-making in research and innovation policy.
