Citation Rankings
Highly Cited Researchers

Engineering & Technology / Nanoscience and Nanotechnology Highly Cited Researchers 3 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
Saudi Arabia
Ahmad Umar
Nanoscience and Nanotechnology
Sensors
Catalysis
Energy
Electronic Devices
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,917
21,086
0.587
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Saudi Arabia
Farid Harraz
Energy Storage Materials
Photocatalysis
Sensors
Nanotechnology
Materials Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,003
6,227
0.692
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Saudi Arabia
Ahmed A Ibrahim
Nanoscience and nanotechnology
Sensors
Environmental Remediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,985
3,679
0.738
* Total Citation Counts Rankings
Rankings
17,393
Saudi Arabia
48
1
Ranking Based On Selection: 1
Ahmad Umar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,917
21,086
0.587
Nanoscience and Nanotechnology
Sensors
Catalysis
Energy
Electronic Devices
* Total Citation Counts Rankings
Rankings
113,353
Saudi Arabia
325
2
Ranking Based On Selection: 2
Farid Harraz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,003
6,227
0.692
Energy Storage Materials
Photocatalysis
Sensors
Nanotechnology
Materials Science
* Total Citation Counts Rankings
Rankings
209,605
Saudi Arabia
750
8
Ranking Based On Selection: 3
Ahmed A Ibrahim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,985
3,679
0.738
Nanoscience and nanotechnology
Sensors
Environmental Remediation
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