# Title 2014 2015 2016 2017 2018 2019
21 Georgia Institute of Technology 2589722912171341027738005455
22 Shandong University of Science and Technology 51212571188332730755378
23 Wuhan University 150471532911912908432365295
24 Russian Academy of Sciences 204381912116492970634175082
25 Xiamen University 167881542911561820333805076
26 Tongji University 12939117849789801927305032
27 Qingdao University of Science and Technology 357040732111264621104967
28 University of Texas System 3026327113187821101442674903
29 Dalian University of Technology 13067120399164724628464876
30 Council of Scientific and Industrial Research 2907622063163121008431984848
31 University of Science and Technology Beijing 9063106939785695030254799
32 Fuzhou University 13352113056050648228444692
33 University of Wollongong 886591177802465921104684
34 Qingdao University 267825533109314223644553
35 Southeast University China 12453112109394813628874511
36 Massachusetts Institute of Technology 2995324787191891126634854490
37 Beihang University 9380974610310791329064444
38 National Institute for Materials Science 187911920212224711430894403
39 University of Chicago 179711615211314847528804370
40 City University of Hong Kong 13309147099135707123314337