Optical materials Materials 140 Electronics 139 Optical and Electronic Materials 138 Physics 62 Nanotechnology 48 Materials science 38 Materials Science 32 Nanotechnology and Microengineering 30 Optics, Lasers, Photonics, Optical Devices 26 Semiconductors 25 Engineering 21 Nanoscale Science and Technology 21 Nanoscience 21 Nanostructures 21 Microwaves 20 Optical engineering 20 Microwaves, RF and Optical Engineering 19 Electronics and Microelectronics, Instrumentation 18 Microelectronics 18 Thin films 18 Chemistry 17 Optics 17 Polymers 15 Chemistry, Physical and theoretical 14 Optics, Optoelectronics, Plasmonics and Optical Devices 14 Optoelectronics 14 Plasmons (Physics) 14 Polymer Sciences 14 Spectrum analysis 14