21.   The company also makes nylon fiber for carpets, ropes and seat belts, semiconductor materials, and plastics for hand tools and electronic devices, among other items.

22.   The panels convert sunlight directly into an electrical current using layers of semiconductor material.

23.   The process should produce wafers of semiconductor material consisting of gallium, arsenic and combinations of other metals.

24.   The satellite managed to produce four samples of exotic semiconductor material, three fewer than planned.

25.   The secret to keeping electrons in captivity is mixing semiconductor materials with different electrical properties on the same surface.

26.   Undeterred by sporadic communications and a brief computer shutdown, the Endeavour astronauts on Monday deployed a satellite designed to produce semiconductor materials in space.

27.   Because of the expected pristine conditions in the wake, the semiconductor material should be purer than any produced on Earth.

28.   Because of the expected pristine conditions in its wake, the semiconductor material should be purer than any produced on Earth.

29.   The solar panels are actually a collection of photovoltaic cells, made of a semiconductor material -- usually silicon -- that produce an electric current when exposed to light.

30.   He said the chip could be produced with existing technology and inexpensive semiconductor material.