- Materials Science, general 270
- Characterization and Evaluation of Materials 245
- Nanotechnology 223
- Metallic Materials 147
- Biomaterials 111
- Materials Engineering 103
- Condensed Matter Physics 97
- Optical and Electronic Materials 93
- Nanoscale Science and Technology 86
- Tribology, Corrosion and Coatings 83
- Physical Chemistry 75
- Atomic/Molecular Structure and Spectra 73
- Biomedicine, general 73
- Biotechnology 73
- Polymer Sciences 64
- Surfaces and Interfaces, Thin Films 63
- Energy, general 59
- Solid Mechanics 56
- Nanotechnology and Microengineering 47
- Classical Mechanics 43