A researcher’s position in the ranking is determined by their D-index (Discipline H-index), which specifically measures scholarly impact within a focused discipline. Unlike a general H-index, the D-index incorporates only publications and citation data directly associated with the examined field—in this case, Materials Science—ensuring a precise reflection of disciplinary research performance.
Scope of Research and Qualification Criteria
This ranking is based on a rigorous examination of 279,971 scientist profiles identified from an assortment of bibliometric databases across all scientific disciplines. Specifically, 19 scientists were identified and evaluated within the domain of Materials Science in Thailand.
To qualify for inclusion in the Materials Science ranking, a scientist was required to have a D-index of at least 40. Furthermore, the majority of their tier publications needed to be concentrated within the field of Materials Science. Consideration was also given to scientists’ awards and achievements pertinent to this area, strengthening the overall assessment.
The D-index threshold for recognizing top researchers is dynamically set as an increment of 10 based on the estimated total number of scholars in each discipline. This approach ensures that the ranking consistently incorporates the top 1% of leading experts. Additionally, to maintain consistency between general and discipline-specific impact, only scientists whose D-index values were within 30% or less of their overall H-index were considered.
Verification and Validation Practices
At Research.com, we recognize that raw bibliometric data alone can never serve as an absolute measure for evaluating scholarly output. To address this, each scientist profile included in the ranking was manually verified and cross-correlated against publications from a broad range of trusted and authoritative sources.
While not directly influencing ranking positions, the number of papers published in prominent journals and conference proceedings was acknowledged as a valuable secondary signal of a scientist’s contribution within Materials Science. The primary metric determining rank remains the D-index, as calculated from data aggregated by OpenAlex and CrossRef—two of the most prominent and widely respected bibliometric repositories available to the research community.
We invite readers to explore further details about our rigorous methodology on our methodology page.
Research.com’s Mission and Vision
The creation of this ranking reflects Research.com’s ongoing commitment to motivate researchers, companies, and policymakers worldwide to observe emerging trends and leading directions in scientific inquiry. Our mission is to provide the entire scientific community—and its stakeholders—with transparent and credible information about who the foremost experts are in specific fields of research, across various countries, and within academic institutions.
By offering a meticulously curated and well-validated ranking, we aim to facilitate informed decision-making and foster greater collaboration and recognition within the global research ecosystem.
