Physics 77 Optical physics 69 SCIENCE / Physics / General 59 SCIENCE / Physics / Optics & Light 58 Mathematical physics 43 Quantum physics (quantum mechanics & quantum field theory) 42 SCIENCE / Physics / Quantum Theory 40 SCIENCE / Physics / Mathematical & Computational 38 Biomedical engineering 36 SCIENCE / Life Sciences / Biophysics 35 Quantum theory 34 Biophysics 33 SCIENCE / Astronomy 32 Materials 30 Materials science 30 Condensed matter physics (liquid state & solid state physics) 29 Medical physics 27 Nanostructured materials 27 SCIENCE / Physics / Atomic & Molecular 26 SCIENCE / Physics / Condensed Matter 26 TECHNOLOGY & ENGINEERING / Biomedical 26 Mathematical models 25 methods 25 Astrophysics 24 Mathematics 24 Optics and photonics 23 Particle & high-energy physics 23 Data processing 22 TECHNOLOGY & ENGINEERING / Materials Science / General 22 Cancer 20