1.   The simplest integrated circuit consists of three layers, one of which is made of semiconductor material.

2.   Among them, he likes Analog Devices, which makes chips for processing graphics, sound and other nondigital signals, and Amcor, which makes semiconductor packaging material.

3.   As in previous efforts, the researchers, who described their work in Nature, used a semiconductor material that is doped with another element to create the photocatalysts.

4.   Cornell University scientists announced Thursday that they had found a way to overcome a significant obstacle to making new semiconductor materials for computer chips and other uses.

5.   During three days of free flight, the device produced four small film-like wafers of exotic semiconductor material in the vacuum created behind it.

6.   During the test, the satellite produced seven wafers of advanced semiconductor material in the ultrapure vacuum generated on the trailing side of the stainless steel disk.

7.   Even as the six astronauts sleep, an experimental robot will try its hand at forging semiconductor materials for high-speed electronics gear.

8.   Fourteen ultrapure semiconductor crystals were grown in a hot furnace, giving researchers good seed material for making pure semiconductor materials on the ground.

9.   Hoping to expand the applications of the technique, he began using mass spectrometers to study semiconductor materials, an important step in opening the field of semiconductor research.