Semi-conductor materials and devices; scientific, photographic, optical, electronic, opto-electronic, micro-electronic, telecommunication and infra-red devices all incorporating semiconductor material; Semi-conductor materials and devices; scientific, photographic, optical, electronic, opto-electronic, micro-electronic, telecommunication and infra-red devices all incorporating semiconductor material

semiconductor radiation detectors, semiconductor light detectors, semiconductor infra-red detectors, semiconductor imaging arrays, semiconductor radiation emitters, semiconductor lasers, semiconductor laser diodes, semiconductor transistors, semiconductor Hall magnetic field sensors, semiconductor magneto-resistive magnetic field sensors, semiconductor electronic amplifiers, and semiconductor switches

VITAMINS AND NUTRITIONAL DIETARY SUPPLEMENTS