Data Sources and Citation Metrics
The 5th edition of the Research.com Best Materials Science Scientists in Nepal Ranking is grounded in comprehensive bibliometric data obtained primarily from OpenAlex and CrossRef, supplemented by multiple other reputable data sources. On 2026-01-12, a rigorous data collection process was conducted to compile citation-based metrics essential for the ranking methodology. Each scientist’s position within the ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively accounts for papers and citations relevant to the examined discipline—Materials Science in this instance. This discipline-specific approach ensures that the ranking accurately reflects a researcher’s impact within their field.
Scope of Research and Qualification Criteria
In constructing this ranking, an extensive pool of 279,971 scientist profiles spanning all disciplines was initially examined, from which 1 scientist specialized primarily in Materials Science was identified. To qualify for inclusion in the Materials Science ranking, a scientist’s D-index was required to be at least 40, with a majority of their tier publications substantively focused on Materials Science. Additionally, achievements such as awards and other recognitions specific to the field were taken into account to supplement the bibliometric evaluation.
The D-index threshold is not static but rather calibrated as increments of 10, reflective of the total estimated scholar count within each discipline. This graduated threshold ensures that the ranking consistently captures the top 1% of leading scholars in Materials Science. Furthermore, to confirm alignment with disciplinary focus, only researchers with a proximity of 30% or less difference between their overall H-index and their D-index were considered. This measure guarantees that the ranking prioritizes specialists with significant contributions specifically in Materials Science.
Verification and Validation Practices
Understanding that raw bibliometric data alone does not fully encapsulate the scholarly contributions of researchers, the Research.com team applies rigorous manual verification to all scientist profiles included in the ranking. Each profile is meticulously cross-correlated against publications indexed in a wide range of trustworthy and validated sources, ensuring high fidelity of the dataset. While not influencing a scientist’s formal position in the ranking, the volume of publications in respected journals and conference proceedings serves as a valuable secondary indicator of a researcher’s impact within the Materials Science community.
The foundation of the ranking is the D-index, calculated based on data exclusively drawn from OpenAlex and CrossRef—among the most comprehensive and authoritative bibliometric databases accessible to the global research community. To explore the full methodological framework underpinning this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission in producing this ranking is to inspire researchers, companies, and policymakers across the globe to discern the trajectories of leading experts in their respective fields. We aim to provide the entire scientific community with transparent access to the identities and contributions of top scientists within specific disciplines, countries, and institutions. In doing so, we strive to foster informed decision-making, collaboration, and strategic investment in research and development worldwide.
