- Science, Humanities and Social Sciences, multidisciplinary 23
- Science, multidisciplinary 23
- Materials Science, general 18
- Nanotechnology 17
- Biomaterials 13
- Condensed Matter Physics 11
- Optical and Electronic Materials 10
- Applied and Technical Physics 7
- Characterization and Evaluation of Materials 7
- Materials Engineering 7
- Inorganic Chemistry 6
- Energy Policy, Economics and Management 5
- Energy Storage 5
- Energy Systems 5
- Energy, general 5
- Physical Chemistry 5
- Renewable and Green Energy 5
- Catalysis 3
- Measurement Science and Instrumentation 3
- Biological and Medical Physics, Biophysics 2