Silicon 13 Semiconductors 6 Integrated circuits 5 Nanotechnology 5 Optoelectronic devices 5 Chemistry 4 Dissertations, Academic (Ph.D) 4 Silicon compounds 4 Agronomy 3 Boron 3 Computer science 3 Data structures (Computer science) 3 Engineering 3 Microelectromechanical systems 3 Microelectronics 3 Nanosilicon 3 Organic synthesis 3 Photonics 3 Silicones 3 Soil Science and Agricultural Chemistry 3 Solid state physics 3 Thesis (Ph.D)-Chemistry 3 Agriculture 2 Bipolar transistors 2 C (Computer program language) 2 Chemistry, Inorganic 2 Chemistry, Organic 2 Detectors 2 Electronics 2 Information technology 2