Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :1
nanophosphors
luminescence
cathodoluminescence
surface characterization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
599
471
0.786
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :2
Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
222
153
0.689
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :3
Pollen analysis
palaeoscience
palynology
palaeoecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
151
105
0.695
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :4
Physics
Astrophysics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
137
104
0.759
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :5
Perovskite solar cell
Organic solar cell
DSSC
Gas Sensors
Materials for Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
101
0.902
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :6
higher education and development
social justice
development ethics
capability approach
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
93
0.750
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :7
Reliability theory-stochastic modeling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
85
0.612
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :8
Stable isotope ecology
Wildlife ecology
Evolutionary ecology
Palaeoecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
98
84
0.857
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :9
Condensed Matter Physics
Renewable Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
103
83
0.806
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :10
housing
small towns
mining towns
public health
children
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
116
79
0.681
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :11
Food Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
77
0.706
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :12
Organic Chemistry
Nano Science
Clinical Biochemistry
Exosomes
Extracellular Vesicles
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
72
0.960
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :13
Phytomedicine
Phytopharmacology
Bioactivity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
69
0.852
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :14
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
61
0.824
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :15
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
60
0.769
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :16
Physics
Semiconductors
Phosphors
Solar Cells
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
58
0.667
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :17
Water resources management
Water accounting
Water Footprint
Food
Irrigation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
54
0.771
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :18
Phytochemistry
Nutraceuticals
Natural Product Research
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
54
0.915
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :19
Agricultural Development Economics and Policy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
53
0.716
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :20
Limnology
Ecotoxicology
Integrated Water Resource Management
Water Ecosystem Services
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
52
0.667
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :21
Pathogenic yeasts
Bioactive lipids
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
45
0.625
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :22
Virology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
44
0.863
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :23
Entrepreneurship
Small Business Management
Entrepreneurial Marketing
Consumer Behaviour
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
44
0.978
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :24
Arachnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
85
41
0.482
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :25
Organometallic chemistry
Corrosion
Material Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
41
0.719
HC Swart
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
599
471
0.786
nanophosphors
luminescence
cathodoluminescence
surface characterization
Jeanet Conradie
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
222
153
0.689
Louis Scott
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
151
105
0.695
Pollen analysis
palaeoscience
palynology
palaeoecology
Petrus Johannes Meintjes
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
137
104
0.759
Vinod Kumar
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
101
0.902
Perovskite solar cell
Organic solar cell
DSSC
Gas Sensors
Materials for Energy
Melanie Walker
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
93
0.750
higher education and development
social justice
development ethics
capability approach
Maxim Finkelstein
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
85
0.612
Reliability theory-stochastic modeling
Daryl Codron
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
98
84
0.857
Stable isotope ecology
Wildlife ecology
Evolutionary ecology
Palaeoecology
Francis Birhanu Dejene
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
103
83
0.806
Lochner Marais
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
116
79
0.681
housing
small towns
mining towns
public health
children
Arno Hugo
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
77
0.706
Anand Krishnan
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
72
0.960
Organic Chemistry
Nano Science
Clinical Biochemistry
Exosomes
Extracellular Vesicles
Tom Ashafa
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
69
0.852
Phytomedicine
Phytopharmacology
Bioactivity
Felicity Burt
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
61
0.824
M Gryzenhout
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
60
0.769
Elizabeth Coetsee
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
58
0.667
Physics
Semiconductors
Phosphors
Solar Cells
Ashok Chapagain
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
54
0.771
Water resources management
Water accounting
Water Footprint
Food
Irrigation
Abhay Prakash Mishra
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
54
0.915
Phytochemistry
Nutraceuticals
Natural Product Research
Edilegnaw Wale
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
74
53
0.716
Agricultural Development Economics and Policy
Paul J Oberholster
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
52
0.667
Limnology
Ecotoxicology
Integrated Water Resource Management
Water Ecosystem Services
Carolina Pohl
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
45
0.625
Pathogenic yeasts
Bioactive lipids
Dominique Goedhals
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
44
0.863
Eugine Tafadzwa Maziriri.
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
44
0.978
Entrepreneurship
Small Business Management
Entrepreneurial Marketing
Consumer Behaviour
Charles Haddad
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
85
41
0.482
Sumit Kumar
University of the Free State
Bloemfontein, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
41
0.719
Organometallic chemistry
Corrosion
Material Chemistry