May 18, 1966
Dr. Ronald E. Enstrom, of RCA Laboratories, makes a visual check of a freshly "grown" wafer of gallium arsenide which stands vertically in the cage-like extension at the end of a quartz rod [see close-up below].
The wafer was grown in the apparatus at right by means of a vapor phase process which can be used to produce solid-state devices directly by deposition from a mixture of hot gases.
Vertical tubes in the picture are precision flow meters used to monitor the gases in the system.
CORPORATION OF AMERICA
Original Caption by Science Service