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CONTROL APPARATUS FOR SINGLE-CRYSTAL GROWTH IN AQUEOUS-SOLUTION METHOD
(1994-03-01)
SHIE, JS
;
HUANG, CT
;
交大名義發表
;
光電工程學系
;
National Chiao Tung University
A new technique has been developed for controlling the crystal-growth rate in the aqueous solution method. This technique provides a programmable preset of the temperature evolution of solution. Initially, the growth rate is kept slow to ensure good crystal quality. Gradually the rate is accelerated to increase the growth efficiency. A simple control mechanism is devised to achieve a very slow and pre-determined cooling rate, which can be adapted to the temperature-related characteristics of various solutions and thermistor sensor. Single crystal growth of KDP has been demonstrated. The result verifies our prediction that a linear growth rate of the crystal dimension with a good seed-to-grown crystal interface can be obtained programmatically.